Relevant bibliographies by topics / Wideband

Academic literature on the topic 'Wideband'

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Published: 4 June 2021
Last updated: 8 June 2024

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Journal articles on the topic "Wideband"

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M, Harinath. "Ultra-Wideband Communication." International Journal of Research Publication and Reviews 4, no. 4 (April 8, 2023): 1900–1902. http://dx.doi.org/10.55248/gengpi.2023.4.4.35861.

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Wen Liu, Dong, and Daniel Msilanga. "Wideband Notched Rectangular DRA." International Journal of Science and Research (IJSR) 7, no. 5 (May 5, 2018): 41–43. http://dx.doi.org/10.21275/art20182075.

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Chang, Jaewon, Junil Ahn, Jeungmin Joo, and Dongweon Lee. "Development of Wideband Multi-Channel Receiver for Direction Finding of Communication Signals." Journal of the Korea Institute of Military Science and Technology 24, no. 5 (October 5, 2021): 527–36. http://dx.doi.org/10.9766/kimst.2021.24.5.527.

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In wireless environments, wideband receivers are used in a communication intelligent system to detect unknown signals and obtain azimuth information. To design a wideband receiver that performs multiple signal detection and direction finding simultaneously, it is necessary to consider a reception structure composed of multiple channels. In this paper, we propose a wideband multi-channel receiver for direction finding of unknown wideband communication signals including frequency hopping signals. A signal processing method for detecting received signals and estimating azimuth information is presented, and components of the manufactured wideband receiver are described. In addition, test results of the signal detection performance by mounting the proposed wideband multi-channel receiver on the flight system are included.
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Biswas, Anirban, and Nilotpal Dutta. "Wideband Tympanometry." Annals of Otology and Neurotology 01, no. 02 (September 2018): 126–32. http://dx.doi.org/10.1055/s-0038-1676876.

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AbstractTraditional tympanometry done with 226 Hz probe tone frequency has some inherent defects and limitations due to which it does not give a very true picture of the middle ear status, and tympanometric findings are often very deceptive. It is not uncommon for otologists to find that on opening the middle ear, the pathology in the middle ear is very different from what they had expected from tympanometric findings. This is because the 226 or 220 Hz, that is used for the traditional single tone tympanometry is based on physical convenience, i.e., practicalities in carrying out the test rather than on test performance, i.e., the diagnostic efficacy of the test. The 226 Hz tympanometry is a poor predictor of middle ear effusions in babies and will be wrong in approximately 50% of cases and diagnosis of ossicular chain discontinuity by type A tympanogram is correct in only about 40% cases, if not lesser. In most cases of otosclerosis, though there is a middle ear stiffness, the tympanometric findings with traditional tympanometry show normal compliance, which is not expected in stiffness of the middle ear. Tympanometry is basically to identify common middle ear pathologies, such as middle ear effusion, ossicular chain discontinuity and otosclerosis. However, if in these very cases the diagnostic efficacy is so poor, then the objective of the test is lost. Traditional tympanometry has a lot of limitations and fallacies. These issues led scientists to sharpen the diagnostic efficacy of tympanometry and the final outcome of the research is wide band tympanometry (WBT). The special advantages of WBT, its difference from traditional single frequency tympanometry, and its clinical utility are presented in this article. Here, we review the concept of WBT, the basic mechanism, and its vast clinical applications. Most of the deficiencies of traditional tympanometry have been overcome by WBT. Not only that, the scope of tympanometry has been further widened by WBT and in addition to diagnosing middle ear pathologies with much more confidence, it can also be used for postoperative monitoring using non-pressurized wideband absorbance.
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Jabbari, B. "Wideband CDMA." IEEE Communications Magazine 36, no. 9 (September 1998): 46. http://dx.doi.org/10.1109/mcom.1998.714614.

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Wang, Yanwei, Jian Li, Petre Stoica, Mark Sheplak, and Toshikazu Nishida. "Wideband RELAX and wideband CLEAN for aeroacoustic imaging." Journal of the Acoustical Society of America 115, no. 2 (February 2004): 757–67. http://dx.doi.org/10.1121/1.1639906.

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S., Karthie, and Salivahanan S. "Fractal-based triangular bandpass filter with a notched band for interference rejection in wideband applications." Circuit World 45, no. 3 (August 5, 2019): 141–47. http://dx.doi.org/10.1108/cw-06-2018-0045.

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Purpose This paper aims to present the design of a novel triangular-shaped wideband microstrip bandpass filter implemented on a low-cost substrate with a notched band for interference rejection. Design/methodology/approach The conventional dual-stub filter is embedded with simple fractal-based triangular-circular geometries through various iterations to reject wireless local area network (WLAN) signals with a notched band at 5.8 GHz. Findings The filter covers a wide frequency band from 3.1 to 8.8 GHz and has a fractional bandwidth of 98 per cent with the lower passband of 57.5 per cent and upper passband of 31.6 per cent separated by a notched band at 5.8 GHz. The proposed wideband prototype bandpass filter is fabricated in FR-4 substrate using PCB technology and the simulation results are validated with measurement results which include insertion loss, return loss and group delay. The fabricated filter has a sharp rejection of 28.3 dB at 5.8 GHz. Measured results show good agreement with simulated responses. The performance of the fractal-based wideband filter is compared with other wideband bandpass filters. Originality/value In the proposed work, a fractal-based wideband bandpass filter with a notched band is reported. The conventional dual-stub filter is deployed with triangular-circular geometry to design a wideband filter with a notched band to suppress interference signals at WLAN frequency. The proposed wideband filter exhibits smaller size and better interference rejection compared to other wideband bandpass filter designs implemented on low-cost substrate reported in the literature. The aforementioned wideband filter finds application in wideband wireless communication systems.
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SIBUL, L. H., L. G. WEISS, and T. L. DIXON. "CHARACTERIZATION OF STOCHASTIC PROPAGATION AND SCATTERING VIA GABOR AND WAVELET TRANSFORMS." Journal of Computational Acoustics 02, no. 03 (September 1994): 345–69. http://dx.doi.org/10.1142/s0218396x94000221.

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An application to remote acoustic sensing that remains unexploited is measuring acoustic scattering and spreading effects with wideband, coherent signal processing techniques. Such techniques allow distributed objects, such as a layer of scatterers due to bubbles or biological particles, and first order time variations in an ocean channel to be estimated. This paper presents narrowband and wideband methods for characterizing stochastic propagation and acoustic scattering in a time-varying ocean in terms of spreading functions. It is shown that the Gabor transform is the natural transform for estimating the narrowband spreading function, and the wavelet transform is the natural transform for estimating the wideband spreading function. Both techniques of characterization use a correlator processing structure in a monostatic transmitter/receiver configuration to estimate the spreading function. The narrowband and wideband spreading functions characterize the distribution of scatterers in range and velocity (time and frequency) in a propagation channel. It is shown that the wideband formulation follows directly from a physical derivation. Moreover, wideband processing removes many of the narrowband restrictions and allows first order time variations, caused by inhomogeneities and relative motion in the ocean channel, to be processed. In addition, wideband techniques allow for increased time intervals and, therefore, increased energy transmission when the transmitter is peak-power-limited. Thus, weak scatterers that may have been unidentified with narrowband techniques may be identified with the wideband methods. Numerical examples for wideband characterization of a distributed scatterer are presented.
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Yu, Daqun, Zhangcheng Hao, Lei Yang, Yang Wang, Lei Sun, and Jianjun Mao. "A Low-Cost Wideband Digital Array Antenna Based on Stretch Processing Technique." International Journal of Antennas and Propagation 2024 (April 24, 2024): 1–14. http://dx.doi.org/10.1155/2024/3624117.

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Wideband digital phased array radar offers the advantages of high range resolution, which improves the recognition ability for multiple targets, group targets, and high-speed targets. Traditional wideband phased arrays use true time delay to compensate for aperture fill time; however, the cost increases significantly. In this paper, a wideband elemental digital array architecture based on the stretch processing method is proposed. By utilizing the time-domain and frequency-domain translation equivalence of the LFM (Linear Frequency Modulation) signal waveform, the equivalent aperture fill time is compensated for through frequency shift and phase shift after stretch processing. Compared to traditional wideband digital arrays, this method can dramatically reduce the required sampling rate and lower the requirements on antenna hardware, thereby reducing the manufacturing cost of system. A comprehensive analysis of the signal processing process and stretch processing method is provided. And an antenna array prototype is developed to verify the T/R channel compensation and wideband beamforming. Measured results show that the antenna is capable of ±60° scanning in azimuth plane and ±40° scanning in elevation plane, with a bandwidth of 500 MHz in S-band. The results demonstrate excellent wideband beam performance and accurate lobe scanning, which confirms the validity of the proposed wideband architecture for stretch processing, frequency shift, and phase shift. This method can be widely applied to the low-cost design and wideband performance improvement of wideband digital array radar.
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Wu, Xun, Jie Luo, Guowei Li, Shurui Zhang, and Weixing Sheng. "Fast Wideband Beamforming Using Convolutional Neural Network." Remote Sensing 15, no. 3 (January 25, 2023): 712. http://dx.doi.org/10.3390/rs15030712.

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With the wideband beamforming approaches, the synthetic aperture radar (SAR) could achieve high azimuth resolution and wide swath. However, the performance of conventional adaptive wideband time-domain beamforming is severely affected as the received signal snapshots are insufficient for adaptive approaches. In this paper, a wideband beamformer using convolutional neural network (CNN) method, namely, frequency constraint wideband beamforming prediction network (WBPNet), is proposed to obtain a satisfactory performance in the circumstances of scanty snapshots. The proposed WBPNet successfully estimates the direction of arrival of interference with scanty snapshots and obtains the optimal weights with effectively null for the interference by utilizing the uniqueness of CNN to extract potential nonlinear features of input information. Meanwhile, the novel beamformer has an undistorted response to the wideband signal of interest. Compared with the conventional time-domain wideband beamforming algorithm, the proposed method can fast obtain adaptive weights because of using few snapshots. Moreover, the proposed WBPNet has a satisfactory performance on wideband beamforming with low computational complexity because it avoids the inverse operation of covariance matrix. Simulation results show the meliority and feasibility of the proposed approach.
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Dissertations / Theses on the topic "Wideband"

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Janardhanan, Deepa. "Wideband speech enhancement." Aachen Shaker, 2008. http://d-nb.info/989298310/04.

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A, Rahim Mohamad Kamal. "Wideband active antenna." Thesis, University of Birmingham, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.404129.

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Smith, Ian Christopher. "Wideband microwave mixers." Thesis, University of Leeds, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.328957.

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Hamid, Mohamad Rijal. "Wideband reconfigurable antennas." Thesis, University of Birmingham, 2011. http://etheses.bham.ac.uk//id/eprint/1560/.

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The work described in this thesis concerns the combining of wideband and reconfigurable narrow band functionality into a single antenna. This concept may be useful in reducing size and to give flexibility to a wireless terminal to operate in several different modes. The approach also offers additional pre-filtering to the front-end, which reduces the interference levels at the receiver, giving them a significant advantage over fixed non reconfigurable transceivers. Wideband-narrowband reconfiguration is potentially useful for future wireless communications such as software defined radio and cognitive radio, since they may employ wideband sensing and reconfigurable narrowband communications. Five novel reconfigurable antennas are presented. One is a switchable log periodic patch array and four are Vivaldi antennas with various forms of reconfiguration. The log periodic is reconfigured by placing switches between the patches and the feed line whilst the Vivaldi antenna has switched resonators controlling the current in the edges of the tapered slots. Wideband to various narrowband functions, wideband with a tunable band rejection having a very wide tuning ratio, and combined three function wide, narrow and tunable band rejection in a single antenna are demonstrated. Prototypes are presented with PIN diode switches, varactors, fixed capacitor or hard wire switches. Measured and simulated results with a very good agreement are presented, thus verifying the proposed concepts.
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Borgmann, Moritz. "Noncoherent MIMO wideband communications /." Zürich : ETH, 2007. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=17352.

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Yuan, Xiaolong. "Wideband Sigma-Delta Modulators." Licentiate thesis, KTH, Communication Systems, CoS, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-13212.

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Sigma-delta modulators (SDM) have come up as an attractive candidatefor analog-to-digital conversion in single chip front ends thanks to the continuousimproving performance. The major disadvantage is the limited bandwidthdue to the need of oversampling. Therefore, extending these convertersto broadband applications requires lowering the oversampling ratio (OSR) inorder. The aim of this thesis is the investigation on the topology and structureof sigma-delta modulators suitable for wideband applications, e.g. wireline orwireless communication system applications having a digital baseband aboutone to ten MHz.It has recently become very popular to feedforward the input signal inwideband sigma-delta modulators, so that the integrators only process quantizationerrors. The advantage being that the actual signal is not distorted byopamp and integrator nonlinearities. An improved feedforward 2-2 cascadedstructure is presented based on unity-gain signal transfer function (STF). Theimproved signal-to-noise-ratio (SNR) is obtained by optimizing zero placementof the noise transfer function (NTF) and adopting multi-bit quantizer.The proposed structure has low distortion across the entire input range.In high order single loop continuous-time (CT) sigma-delta modulator, excessloop delay may cause instability. Previous techniques in compensation ofinternal quantizer and feedback DAC delay are studied especially for the feedforwardstructure. Two alternative low power feedforward continuous-timesigma-delta modulators with excess loop delay compensation are proposed.Simulation based CT modulator synthesis from discrete time topologies isadopted to obtain the loop filter coefficients. Design examples are given toillustrate the proposed structure and synthesis methodology.Continuous time quadrature bandpass sigma-delta modulators (QBSDM)efficiently realize asymmetric noise-shaping due to its complex filtering embeddedin the loops. The effect of different feedback waveforms inside themodulator on the NTF of quadrature sigma-delta modulators is presented.An observation is made that a complex NTF can be realized by implementingthe loop as a cascade of complex integrators with a SCR feedback digital-toanalogconverter (DAC), which is desirable for its lower sensitivity to loopmismatch. The QBSDM design for different bandpass center frequencies relativeto the sampling frequency is illustrated.The last part of the thesis is devoted to the design of a wideband reconfigurablesigma-delta pipelined modulator, which consists of a 2-1-1 cascadedmodulator and a pipelined analog-to-digital convertor (ADC) as a multi-bitquantizer in the last stage. It is scalable for different bandwidth/resolutionapplication. The detail design is presented from system to circuit level. Theprototype chip is fabricated in TSMC 0.25um process and measured on thetest bench. The measurement results show that a SNR over 60dB is obtainedwith a sampling frequency of 70 MHz and an OSR of ten.

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Amat, Pascual Ángel José. "Ultra-Wideband Sensor-Communication." Thesis, Norwegian University of Science and Technology, Department of Electronics and Telecommunications, 2008. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-8918.

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One of the fundamentals concerns in wireless communications with battery operated terminals is the battery life. Basically there are two ways of reducing power consumption: the algorithms should be simple and efficiently implemented (at least in the wireless terminals), and the transmit power should be limited. In this document is considered discrete time, progressive signal transmission with feedback [ramstad]. For forward Gaussian channel, with an ideal feedback channel, the system performs according to OPTA (Optimal Performance Theoretically Attainable[berger]). In this case, with substantial bandwidth expansion through multiple retransmissions, the power can be lowered to a theoretical minimum. In the case of a non-ideal return channel the results are limited by the feedback channel's signal-to-noise ratio. Going one step forward, a more realistic view of the channel will consider fading due to multiple reflections, especially in indoors scenarios. In this thesis it is discussed how to model the channel fading and how to simulate it from different probability distributions. After, some solutions to avoid, or at least reduce, all the undesirable effects caused by the fading will be proposed. In these solutions, the fading characteristics (power and dynamic range) and the application requirements will play a vary important role in the final system design. Finally, a realistic signal will be tried to be sent in a realistic scenario. This will be audio transmission over fading channels. Then, the results will be compared in general terms to a similar equipment such as generic wireless microphone system.

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Abboud, Karim. "Wideband CELP speech coding." Thesis, McGill University, 1992. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=56805.

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The purpose of this thesis is to study the coding of wideband speech and to improve on previous Code-Excited Linear Prediction (CELP) coders in terms of speech quality and bit rate. To accomplish this task, improved coding techniques are introduced and the operating bit rate is reduced while maintaining and even enhancing the speech quality.
the first approach considers the quantization of Liner Predictive Coding (LPC) parameters and uses a three way split vector quantization. Both scalar and vector quantization are initially studied; results show that, with adequate codebook training, the second method generates better results while using a fewer number of bits. Nevertheless, the use of vector quantizers remain highly complex in terms of memory and number of computations. A new quantization scheme, split vector quantization (split VQ), is investigated to overcome this complexity problem. Using a new weighted distance measure as a selection criterion for split VQ, the average spectral distortion is significantly reduced to match the results obtained with scalar quantizers.
The second approach introduces a new pitch predictor with an increased temporal resolution for periodicity. This new technique has the advantage of maintaining the same quality obtained with conventional multiple coefficient predictors at a reduced bit rate. Furthermore, the conventional CELP noise weighting filter is modified to allow more freedom and better accuracy in the modeling of both tilt and formant structures. Throughout this process, different noise weighting schemes are evaluated and the results show that the new filter greatly contributes in solving the problem of high frequency distortion.
The final wideband CELP coder is operational at 11.7 kbits/s and generates a high perceptual quality of the reconstructed speech using the fractional pitch predictor and the new perceptual noise weighting filter.
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Blázquez-Fernández, Raúl 1975. "Ultra-wideband digital baseband." Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/37895.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2006.
Includes bibliographical references (p. 143-152).
The FCC approved the use of Ultra-wideband signals for communication purposes in February 2002 in the band from 3.1GHz to 10.6GHz, effectively opening 7.5GHz of free unlicensed bandwidth. There are two main constraints for the use of this band: a maximum EIRP spectral density of -41.3dBm/MHz and a minimum instantaneous bandwidth of 500MHz. One of the main driving applications of this technology is high data rate communication over short distances. In this thesis two digital baseband receivers for impulse UWB have been designed. The first one was designed for baseband UWB pulses and achieves 193 kbps of wireless communication using impulses of 300 MHz bandwidth and 2% duty cycle, and was part of a system-on-a-chip. The second baseband achieves 100Mbps using impulses of 500 MHz bandwidth in the FCC compliant band, as part of a whole UWB system. Due to its bandwidth the multipath becomes very relevant as the data rate is increased into the range of the hundreds of megabits per second. The current multipath model, used for the development of IEEE standard 802.15.3a is a modified Saleh-Valenzuela model [1] that has a root mean square duration of the impulse response from 5 to 25 ns. The maximum data rate in an UWB system depends on the signal to noise ratio and the multipath.
(cont.) The assessment of the quality of the channel and the exposure of several useful knobs in the baseband to control the complexity of the signal processing implemented allows higher levels of the communication hierarchy to fine-tune the receiver, trading off number of operations and power dissipation with quality of service. It includes a MLSE and a RAKE receiver to compensate for multipath. It has been implemented in 0.18 um CMOS technology using National Semiconductors process. The chip has been demonstrated in a wireless system.
by Raúl Blázquez.
Ph.D.
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Adaniya, Hana L. "Wideband active antenna cancellation." Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/47896.

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Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2008.
Includes bibliographical references (leaf 91).
There exists a simultaneous transmit and receive antenna system where the transmitted signal is creating wideband interference of the receiver. To resolve this interference problem, the isolation between the transmit antenna and the receive antenna must be increased. This thesis analyzes and discusses various strategies for antenna isolation and demonstrates the feasibility of an adaptive filtering approach on active signal cancellation. The final system design demonstrates that, with a broadband interference source in close proximity to a receiver, it is possible to provide 30 dB of isolation by using active cancellation.
by Hana L. Adaniya.
M.Eng.
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Books on the topic "Wideband"

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Gharpurey, Ranjit, and Peter Kinget, eds. Ultra Wideband. Boston, MA: Springer US, 2008. http://dx.doi.org/10.1007/978-0-387-69278-4.

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Allen, Ben, Mischa Dohler, Ernest E. Okon, Wasim Q. Malik, Anthony K. Brown, and David J. Edwards, eds. Ultra-Wideband. Chichester, UK: John Wiley & Sons, Ltd, 2006. http://dx.doi.org/10.1002/0470056843.

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Starič, Peter, and Erik Margan, eds. Wideband Amplifiers. Boston, MA: Springer US, 2006. http://dx.doi.org/10.1007/978-0-387-28341-8.

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Long, Teng, Yang Li, Weifeng Zhang, Quanhua Liu, Xinliang Chen, Weiming Tian, and Xiaopeng Yang. Wideband Radar. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-7561-5.

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WideBand networking. Independence, MO: International Academy of Science, 1996.

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Chitrapu, Prabhakar. Wideband TDD. New York: John Wiley & Sons, Ltd., 2005.

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Starič, Peter. Wideband amplifiers. Dordrecht: Springer, 2006.

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Billings, Roger E. WideBand networking. Independence, MO: International Academy of Science, 1996.

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Fernandes, Miguel D., and Luis B. Oliveira, eds. Wideband CMOS Receivers. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-18920-8.

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Carlin, Herbert J. Wideband circuit design. Boca Raton, Fla: CRC Press, 1997.

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Book chapters on the topic "Wideband"

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Weik, Martin H. "wideband." In Computer Science and Communications Dictionary, 1921. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_21104.

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Trendowicz, Adam, and Ross Jeffery. "Wideband Delphi." In Software Project Effort Estimation, 315–26. Cham: Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-03629-8_12.

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Sipal, Vit, David Edward, and Ben Allen. "Wideband Channels." In LTE-Advanced and Next Generation Wireless Networks, 215–45. Chichester, UK: John Wiley & Sons, Ltd, 2012. http://dx.doi.org/10.1002/9781118410998.ch8.

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Weik, Martin H. "wideband channel." In Computer Science and Communications Dictionary, 1922. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_21105.

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Weik, Martin H. "wideband LAN." In Computer Science and Communications Dictionary, 1922. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_21107.

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Weik, Martin H. "wideband modem." In Computer Science and Communications Dictionary, 1922. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_21109.

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Weik, Martin H. "wideband signal." In Computer Science and Communications Dictionary, 1922. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_21111.

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Weik, Martin H. "wideband system." In Computer Science and Communications Dictionary, 1923. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_21112.

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Davidson, C. W. "Wideband Systems." In Transmission Lines for Communications, 155–88. London: Palgrave Macmillan UK, 1989. http://dx.doi.org/10.1007/978-1-349-19995-2_6.

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Naeem, Umair, and Vincent Fusco. "Wideband Antennas." In Signals and Communication Technology, 5–37. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-74311-6_2.

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Conference papers on the topic "Wideband"

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Yurke, B. "Squeezed-coherent State Generation via Wideband Four-wave Mixers." In Instabilities and Dynamics of Lasers and Nonlinear Optical Systems. Washington, D.C.: Optica Publishing Group, 1985. http://dx.doi.org/10.1364/idlnos.1985.wd21.

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Four-wave mixers have been investigated theoretically as potential sources of squeezed-coherent radiation 1,2 and there are a number of experimental efforts underway to demonstrate the production of squeezed-coherent radiation via such devices.3,4,5 Here the results of some wideband calculations of the output of cavity four-wave mixers is presented. The wideband squeezed-coherent radiation generated by such devices may be detected via a wideband homodyne detector.6 Wideband squeezing will manifest itself in the noise-power spectrum of the homodyne detector's output as regions where the noise is reduced below the level that is observed when no light enters the input port of the homodyne detector. Wideband homodyne detection allows one to look for squeezing at frequencies far from d.c. This gives the experimentalist the freedom to look for squeezing in the frequency range where his detector performs best.
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Naik, Mehul R., and C. H. Vithalani. "Wideband local oscillator design for wideband transceivers." In 2011 IEEE International RF and Microwave Conference (RFM). IEEE, 2011. http://dx.doi.org/10.1109/rfm.2011.6168689.

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Yen, Yi-hsun, and Li Li. "A Wideband Monitoring and Measuring System for Optical Coatings." In Optical Interference Coatings. Washington, D.C.: Optica Publishing Group, 1988. http://dx.doi.org/10.1364/oic.1988.tud4.

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Today, non-quaterwave optical coatings are commonly used in production, especially due to the rapid development of CAD technique. The wideband monitoring method, proposed by B. Vidal, A. Fornier and E. Pelletier [1] in 1978, is very effective to solve the monitoring problem of this kind of coatings. A practical wideband monitoring system has been established in our laboratory.
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Craninckx, Jan, and David Ngo. "Wideband Receivers." In 2008 International Solid-State Circuits Conference - (ISSCC). IEEE, 2008. http://dx.doi.org/10.1109/isscc.2008.4523186.

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Mackinlay, Jock D., and Jeffrey Heer. "Wideband displays." In Extended abstracts of the 2004 conference. New York, New York, USA: ACM Press, 2004. http://dx.doi.org/10.1145/985921.986105.

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Campanelli, Mark B., and Douglas J. Smith. "A wideband optical monitor for a planetary-rotation coating-system." In Optical Interference Coatings. Washington, D.C.: Optica Publishing Group, 1997. http://dx.doi.org/10.1364/oic.1998.the.7.

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A substrate-specific, through-planet, wideband optical coating monitor is being developed to increase production yield and the understanding of physical vapor deposition (PVD) coatings fabricated in the Optical Manufacturing Laboratory at the University of Rochester’s Laboratory for Laser Energetics. In-situ wideband optical monitoring of planetary rotation systems allows direct monitoring of large, expensive substrates with complex layering schemes. The optical monitor discussed here is under development for coating several large (e.g., 80.7 x 41.7 x 9.0 cm) polarizers for the National Ignition Facility. Wideband optical monitoring of the production substrates is used in concert with an array of crystal monitors for process control, film parameter evaluation, and error detection with associated design reoptimization.
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Dey, Nikhil, Sukhvinder Kaur, and Ravendra Kumar Varshney. "Wideband Coplanar Terahertz Metamaterial Absorber." In Laser Science. Washington, D.C.: Optica Publishing Group, 2023. http://dx.doi.org/10.1364/ls.2023.ld1.6.

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A coplanar wideband metamaterial absorber at terahertz frequencies has been designed by assembling split ring resonators (SRRs) in matrix form with varying radii and thicknesses. This resulted in absorption ≥99% with a simplified coplanar design.
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Gishkori, Shahzad, Geert Leus, and Hakan Delic. "Energy Detection of Wideband and Ultra-Wideband PPM." In GLOBECOM 2010 - 2010 IEEE Global Communications Conference. IEEE, 2010. http://dx.doi.org/10.1109/glocom.2010.5683987.

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Krishnan, Venkatesh, Vivek Rajendran, Ananthapadmanabhan Kandhadai, and Sharath Manjunath. "EVRC-Wideband: The New 3GPP2 Wideband Vocoder Standard." In 2007 IEEE International Conference on Acoustics, Speech, and Signal Processing. IEEE, 2007. http://dx.doi.org/10.1109/icassp.2007.366240.

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Zhou, Jiafeng, Li Wang, and Kevin Morris. "Wideband Envelope Modulator Design for Wideband Power Amplifiers." In 2008 38th European Microwave Conference (EuMC). IEEE, 2008. http://dx.doi.org/10.1109/eumc.2008.4751797.

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Reports on the topic "Wideband"

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Waltjen, K., C. Romero, S. Azevedo, F. Dowla, A. Spiridon, D. Benzel, and P. Haugen. Ultra-wideband Communications. Office of Scientific and Technical Information (OSTI), February 2004. http://dx.doi.org/10.2172/15013960.

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Brown, E. R. Wideband Photonic Crystals. Fort Belvoir, VA: Defense Technical Information Center, June 1995. http://dx.doi.org/10.21236/ada299189.

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Carin, Lawrence. Ultra-Wideband Electromagnetics. Fort Belvoir, VA: Defense Technical Information Center, November 1997. http://dx.doi.org/10.21236/ada391366.

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Brocato, Robert Wesley. Hemispheric ultra-wideband antenna. Office of Scientific and Technical Information (OSTI), April 2006. http://dx.doi.org/10.2172/921149.

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Stenbakken, Gerard N. NBS wideband sampling wattmeter. Gaithersburg, MD: National Bureau of Standards, 1987. http://dx.doi.org/10.6028/nbs.tn.1221.

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AIR FORCE SPACE COMMAND SPACE MISSILE SYS CTR. Wideband Global SATCOM (WGS). Fort Belvoir, VA: Defense Technical Information Center, December 2013. http://dx.doi.org/10.21236/ada614905.

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Bernhard, Jennifer T., and Joshua A. Fladie. Wideband Conformal Antennas and Arrays. Fort Belvoir, VA: Defense Technical Information Center, October 2005. http://dx.doi.org/10.21236/ada443477.

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Sriram, S. Wideband Photonics Electric Field Sensor. Fort Belvoir, VA: Defense Technical Information Center, September 1999. http://dx.doi.org/10.21236/ada369157.

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Pillai, Unnikrishna, and Lawrence Carin. AASERT on Ultra-Wideband Electromagnetics. Fort Belvoir, VA: Defense Technical Information Center, August 1997. http://dx.doi.org/10.21236/ada339219.

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Kay, Steven, and Naresh Vankayalapati. Wideband Signal De-Interleaving (WSD). Fort Belvoir, VA: Defense Technical Information Center, April 2012. http://dx.doi.org/10.21236/ada559192.

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