Relevant bibliographies by topics / Broadband frequency

Academic literature on the topic 'Broadband frequency'

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Published: 4 June 2021
Last updated: 30 January 2023

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Journal articles on the topic "Broadband frequency"

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Suchowski, Haim, Barry D. Bruner, Ady Arie, and Yaron Silberberg. "Broadband Nonlinear Frequency Conversion." Optics and Photonics News 21, no. 10 (October 1, 2010): 36. http://dx.doi.org/10.1364/opn.21.10.000036.

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Schewe, Philip F. "Broadband frequency-comb spectroscopy." Physics Today 61, no. 3 (March 2008): 18. http://dx.doi.org/10.1063/1.2897938.

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Xie, Ning, Hui Wang, and Hongwei Liu. "Broadband Frequency Invariant Beamformer." Wireless Personal Communications 61, no. 1 (May 22, 2010): 143–59. http://dx.doi.org/10.1007/s11277-010-0015-7.

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Vandersteen, G., A. Barel, and Y. Rolain. "Broadband high-frequency hybrid." IEEE Transactions on Instrumentation and Measurement 51, no. 6 (December 2002): 1204–9. http://dx.doi.org/10.1109/tim.2002.807985.

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Micenko, Michael. "Broadband: Improving Frequency Content." Preview 2015, no. 176 (August 2015): 37–40. http://dx.doi.org/10.1071/pvv2015n176p37.

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Zhou, Yuewen, Fangzheng Zhang, and Shilong Pan. "Instantaneous frequency analysis of broadband LFM signals by photonics-assisted equivalent frequency sampling." Chinese Optics Letters 19, no. 1 (2021): 013901. http://dx.doi.org/10.3788/col202119.013901.

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Tiwari, Rahul, and Seema Verma. "PROPOSED A COMPACT MULTIBAND AND BROADBAND RECTANGULAR MICROSTRIP PATCH ANTENNA FOR C-BAND AND X-BAND." INTERNATIONAL JOURNAL OF COMPUTERS & TECHNOLOGY 13, no. 3 (April 16, 2014): 4291–301. http://dx.doi.org/10.24297/ijct.v13i3.2760.

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In this communication two proposed antenna described one for broadband at 6.71445GHz to 11.9362GHz with finite ground plane. The antenna designed with 11.4051mm× 8.388 mm radiating copper patch with ground plane design with 21.0051mm x17. 988mm. And this Compact broadband rectangular shape microstrip patch antenna is designed and analyzed for the return loss of -20.08 dB is achieved at the resonant frequency of 7.941GHz, From Antenna2-it is observed that, antenna for multiband at different frequency. The primary radiating elements are Simple Rectangular Microstrip Patch Antenna in upper side with probe feed and use finite ground plane are two parallel crossed printed slot for three different frequency applications which is smaller in size compared to other available multiband antennas. From the result, it is observed that, the return loss of -16.97 dB is achieved at the first resonant frequency of 4.853GHz, -10.30dB at the second resonant frequency of 8.382GHz, -10.73 dB at the third resonant frequency of 9.265GHz, -17.38 dB at the fourth resonant frequency of 10.15GHz and -12.37 dB at the fifth resonant frequency of 11.91GHz. This broadband and multi-band highly efficient antenna for use in C-Band, and X-Band.
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Sokoll, Thorsten, and Arne F. Jacob. "Broadband Low-Cost Frequency Meters." IEEE Transactions on Microwave Theory and Techniques 56, no. 1 (January 2008): 202–8. http://dx.doi.org/10.1109/tmtt.2007.912169.

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Johnson, D. M. S., J. M. Hogan, S. w. Chiow, and M. A. Kasevich. "Broadband optical serrodyne frequency shifting." Optics Letters 35, no. 5 (February 26, 2010): 745. http://dx.doi.org/10.1364/ol.35.000745.

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Deepukumar, M., J. George, C. K. Aanandan, P. Mohanan, and K. G. Nair. "Broadband dual frequency microstrip antenna." Electronics Letters 32, no. 17 (1996): 1531. http://dx.doi.org/10.1049/el:19961056.

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Dissertations / Theses on the topic "Broadband frequency"

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Chou, Thomas Clayton. "Broadband frequency-independent beamforming." Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/11854.

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Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1995.
Includes bibliographical references (p. 103-105).
by Thomas Clayton Chou.
M.S.
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雷靜 and Jing Lei. "Frequency synchronization methods for digital broadband receivers." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2002. http://hub.hku.hk/bib/B31244427.

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Pamuk, Gokhan. "Design And Realization Of Broadband Instantaneous Frequency Discriminator." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/3/12612044/index.pdf.

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In this thesis, RF sections of a multi tier instantaneous frequency measurement (IFM) receiver which can operate in 2 &ndash
18 GHz frequency band is designed, simulated and partially realized. The designed structure uses one coarse tier, three medium tiers and one fine tier for frequency discrimination. A novel reflective phase shifting technique is developed which enables the design of very wideband phase shifters using stepped cascaded transmission lines. Compared to the classical phase shifters using coupled transmission lines, the new approach came out to be much easier to design and fabricate with much better responses. This phase shifting technique is used in coarse and medium tiers. In fine frequency measurement tier, I/Q discriminator approach is used because reflective phase shifters would necessitate unacceptably long delay lines. Two I/Q discriminators are designed and fabricated using Lange directional couplers that operate in 2-6 GHz and 6-18 GHz, resulting in satisfactory response. Additionally, 6 GHz HP and 6 GHz LP distributed filters are designed and fabricated to be used for these I/Q discriminators in fine tier. In order to eliminate possible ambiguities in coarse tier, a distributed element LP-HP diplexer with 10 GHz crossover frequency is designed and fabricated successfully to be used for splitting the frequency spectrum into 2-10 GHz and 10-18 GHz to ease the design and realization problems. Three power dividers operating in the ranges 2-18 GHz, 2-6 GHz and 6-18 GHz are designed for splitting incoming signals into different branches. All of these dividers are also fabricated with satisfactory response. The fabricated components are all compact and highly reproducible. The designed IFM can tolerate 48 degrees phase margin for resolving ambiguity in the tiers while special precautions are taken in fine tier to help ambiguity resolving process also. The resulting IFM provides a frequency resolution below 1 MHz in case of using an 8-bit sampler with a frequency accuracy of 0.28 MHz rms for 0 dB input SNR and 20 MHz video bandwidth.
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To, Chau B. "Real Frequency Parametric Approach to Broadband Matching Problems." Thesis, California State University, Long Beach, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10638732.

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The purpose of this project is to study the real frequency parametric approach and to implement it in MATLAB as a CAD matching network synthesizer. This approach uses the parametric presentation of Brune function for modeling the real part of the immittance function of the lossless equalizer, which improves the computational time and numerical stability. The parametric approach inherits all the merits of the former real frequency direct computational technique; therefore, it is able to provide optimized solutions for double matching problems as well as the single matching problems.

The parametric approach is applied to examples presented in this project including a double matching problem and a single matching problem. In addition, different topologies of the equalizer are presented in each matching problem. To compare the behavior and the efficiency of each matching network, wideband S-parameter simulation for each scenario is generated by Agilent Design System (ADS) software.

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Ward, Darren Brett, and db_ward@hotmail com. "Theory and application of broadband frequency invariant beamforming." The Australian National University. Faculty of Engineering and Information Technology, 1996. http://thesis.anu.edu.au./public/adt-ANU20050418.112459.

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In many engineering applications, including radar, sonar, communications and seismology, the direction of impinging signal wavefronts can be used to discriminate between competing sources. Often these source signals cover a wide bandwidth and conventional narrowband beamforming techniques are ineffective, since spatial resolution varies significantly across the band. In this thesis we consider the problem of beamforming for broadband signals, primarily when the spatial response remains constant as a function of frequency. This is called a frequency invariant beamformer (FIB).¶ Rather than applying the numerical technique of multi-parameter optimisation to solve for the beamformer parameters, we attempt to address the fundamental nature of the FIB problem. The general philosophy is to use a theoretical continuous sensor to derive relationships between a desired FI beampattern and the required signal processing structure. Beamforming using an array of discrete sensors can then be formulated as an approximation problem. This approach reveals a natural structure to the FIB which is otherwise buried in a numerical optimisation procedure.¶ Measured results from a microphone array are presented to verify that the simple FIB structure can be successfully implemented. We then consider imposing broadband pattern nulls in the FI beampattern, and show that (i) it is possible to impose an exact null which is present over all frequencies, and (ii) it is possible to calculate a priori how many constraints are required to achieve a null of a given depth in a FIB. We also show that the FIB can be applied to the problem of broadband direction of arrival (DOA) estimation and provides computational advantages over other broadband DOA estimators.¶ Through the theoretical continuous sensor approach, we show that the FIB theory can be generalised to the problem of designing a general broadband beamformer (GBB) which realizes a broadband angle-versus-frequency beampattern specification. Coupled with a technique for radial beampattern transformation, the GBB can be applied to a wide class of problems covering both nearfield beamforming (in which the shape of the impinging wavefront must be considered and farfield beamforming (which is simplified by the assumption of planar wavefronts) for a broadband beampattern specified over both angle and frequency.
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Kongara, Gayathri. "Space-Frequency Equalization in Broadband Single Carrier Systems." Thesis, University of Canterbury. Electrical and Computer engineering, 2009. http://hdl.handle.net/10092/4421.

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Broadband wireless access systems can be used to deliver a variety of high data rate applications and services. Many of the channels being considered for such applications exhibit multipath propagation coupled with large delay spreads. Cur- rently, orthogonal frequency division multiplexing is employed in these channels to compensate the effect of dispersion. Single carrier (SC) modulation in conjunc- tion with frequency-domain equalization (FDE) at the receiver has been shown to be a practical alternate solution as it has lower peak to average power ratio and is less sensitive to frequency offsets and phase noise compared to OFDM. The effect of multipath propagation increases with increasing data rate for SC systems. This leads to larger inter-symbol-interference (ISI) spans. In addition the achievable ca- pacity of SC-broadband systems depends on their ability to accommodate multiple signal transmissions in the same frequency band, which results in co-channel inter- ference (CCI) when detecting the desired data stream. The effects of CCI and ISI are more pronounced at high data rates. The objective of this research is to investi- gate and a develop low-complexity frequency domain receiver architectures capable of suppressing both CCI and ISI and employing practical channel estimation. In this thesis, a linear and a non-linear receiver architecture are developed in the frequency domain for use in highly dispersive channels employing multiple input multiple output (MIMO) antennas. The linear receiver consists of parallel branches each corresponding to a transmit data stream and implements linear equalization and demodulation. Frequency domain joint CCI mitigation and ISI equalization is implemented based on estimated channel parameters and is called space-frequency Broadband wireless access systems can be used to deliver a variety of high data rate applications and services. Many of the channels being considered for such applications exhibit multipath propagation coupled with large delay spreads. Cur- rently, orthogonal frequency division multiplexing is employed in these channels to compensate the effect of dispersion. Single carrier (SC) modulation in conjunc- tion with frequency-domain equalization (FDE) at the receiver has been shown to be a practical alternate solution as it has lower peak to average power ratio and is less sensitive to frequency offsets and phase noise compared to OFDM. The effect of multipath propagation increases with increasing data rate for SC systems. This leads to larger inter-symbol-interference (ISI) spans. In addition the achievable ca- pacity of SC-broadband systems depends on their ability to accommodate multiple signal transmissions in the same frequency band, which results in co-channel inter- ference (CCI) when detecting the desired data stream. The effects of CCI and ISI are more pronounced at high data rates. The objective of this research is to investi- gate and a develop low-complexity frequency domain receiver architectures capable of suppressing both CCI and ISI and employing practical channel estimation. In this thesis, a linear and a non-linear receiver architecture are developed in the frequency domain for use in highly dispersive channels employing multiple input multiple output (MIMO) antennas. The linear receiver consists of parallel branches each corresponding to a transmit data stream and implements linear equalization and demodulation. Frequency domain joint CCI mitigation and ISI equalization is implemented based on estimated channel parameters and is called space-frequency
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Thiem, Keem B. "Design of broadband wire antennas for frequency hopping applications." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1993. http://handle.dtic.mil/100.2/ADA267405.

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Zhu, Yu. "Frequency domain equalization for single carrier broadband wireless communications /." View abstract or full-text, 2007. http://library.ust.hk/cgi/db/thesis.pl?ECED%202007%20ZHUY.

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Zhang, Jin. "Fixed broadband wireless access systems at millimeter wave frequency." Thesis, University of South Wales, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.436363.

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Shah, Veeral S. (Veeral Sanjay) 1978. "Timing and frequency synchronization in OFDM broadband wireless systems." Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/86850.

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Books on the topic "Broadband frequency"

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Sanders, Frank H. Broadband spectrum survey at Denver, Colorado. [Boulder, Colo.]: U.S. Dept. of Commerce, 1995.

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Sanders, Frank H. Broadband spectrum survey at Denver, Colorado. [Boulder, Colo.]: U.S. Dept. of Commerce, 1995.

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Sanders, Frank H. Broadband spectrum survey at Denver, Colorado. [Boulder, Colo.]: U.S. Dept. of Commerce, 1995.

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Sanders, Frank H. Broadband spectrum survey at Denver, Colorado. [Boulder, Colo.]: U.S. Dept. of Commerce, 1995.

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Sanders, Frank H. Broadband spectrum survey at Los Angeles, California. [Boulder, Colo.]: U.S. Dept. of Commerce, National Telecommunications and Information Administration, 1997.

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Sanders, Frank H. Broadband spectrum survey at Los Angeles, California. [Boulder, Colo.]: U.S. Dept. of Commerce, National Telecommunications and Information Administration, 1997.

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Sanders, Frank H. Broadband spectrum survey at San Diego, California. [Boulder, Colo.]: U.S. Dept. of Commerce, National Telecommunications and Information Administration, 1996.

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Sanders, Frank H. Broadband spectrum survey at San Diego, California. [Boulder, Colo.]: U.S. Dept. of Commerce, National Telecommunications and Information Administration, 1996.

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1974-, Li Guoqing, ed. OFDM-based broadband wireless networks: Design and optimization. Hoboken, N.J: J. Wiley, 2005.

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OFDM towards fixed and mobile broadband wireless access. Boston, MA: Artech House, 2007.

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Book chapters on the topic "Broadband frequency"

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Yan, Shefeng. "Frequency-Domain Broadband Beamforming." In Springer Topics in Signal Processing, 29–46. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-6802-8_2.

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Yu, Jianjun. "Frequency-Stable Photogenerated Vector Terahertz Signal Generation." In Broadband Terahertz Communication Technologies, 131–54. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-3160-3_7.

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Gourc, Etienne, Chiara Grappasonni, Jean-Philippe Noël, Thibaut Detroux, and Gaëtan Kerschen. "Obtaining Nonlinear Frequency Responses from Broadband Testing." In Nonlinear Dynamics, Volume 1, 219–27. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-29739-2_20.

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Farnham, Tim. "A Combined Frequency and Time Based Channel Reuse Partitioning Multiple Access Technique for Indoor Wireless ATM Networks." In Broadband Wireless Communications, 247–58. London: Springer London, 1998. http://dx.doi.org/10.1007/978-1-4471-1570-0_23.

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Miller, Michael I. "Strategies for the Representation of Broadband Stimuli in the Discharge Patterns of Auditory-Nerve Fibers." In Auditory Frequency Selectivity, 265–72. Boston, MA: Springer US, 1986. http://dx.doi.org/10.1007/978-1-4613-2247-4_29.

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Farazian, Mohammed, Prasad S. Gudem, and Lawrence E. Larson. "Design of Broadband Amplifiers in Digital CMOS Technology." In Fast Hopping Frequency Generation in Digital CMOS, 87–106. New York, NY: Springer New York, 2012. http://dx.doi.org/10.1007/978-1-4614-0490-3_5.

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Shim, Eu-Suk, Jee-Hyun Kim, Hyoung-Kyu Song, and Young-Hwan You. "Robust Integer Frequency Offset Estimation for OFDM System." In Advances in Broadband Communication and Networks, 195–210. New York: River Publishers, 2022. http://dx.doi.org/10.1201/9781003337089-9.

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Kletschkowski, Thomas. "Active Control of Tonal and Broadband Noise." In Adaptive Feed-Forward Control of Low Frequency Interior Noise, 71–145. Dordrecht: Springer Netherlands, 2012. http://dx.doi.org/10.1007/978-94-007-2537-9_6.

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Kaiser, Stefan. "Space Time Frequency Coding in Broadband OFDM Systems." In Adaptive Antenna Arrays, 521–35. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-662-05592-2_29.

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Osvay, K., and I. N. Ross. "Efficient Broadband Sum Frequency Generation by Chirped Pulses." In Ultrafast Processes in Spectroscopy, 401–4. Boston, MA: Springer US, 1996. http://dx.doi.org/10.1007/978-1-4615-5897-2_91.

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Conference papers on the topic "Broadband frequency"

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Ruppel, Timothy H. "Broadband Horizontal and Vertical Spatial Coherence Measurements." In HIGH FREQUENCY OCEAN ACOUSTICS: High Frequency Ocean Acoustics Conference. AIP, 2004. http://dx.doi.org/10.1063/1.1843035.

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Emrick, R., S. Franson, J. Holmes, B. Bosco, and S. Rockwell. "High frequency broadband communications." In MILCOM 2005. 2006 IEEE Military Communications Conference. IEEE, 2005. http://dx.doi.org/10.1109/milcom.2005.1606097.

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Levashov, A. V., O. G. Solovev, and A. P. Ignatev. "Broadband balanced frequency multipliers." In 2014 24th International Crimean Conference "Microwave & Telecommunication Technology" (CriMiCo). IEEE, 2014. http://dx.doi.org/10.1109/crmico.2014.6959299.

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Palma, D. A., and W. C. Wong. "Broadband Frequency Selective Surface." In IEEE Military Communications Conference MILCOM 1986. IEEE, 1986. http://dx.doi.org/10.1109/milcom.1986.4805759.

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Pegwal, Saurabh, Mahesh Abegaonkar, and Shiban K. Koul. "Broadband Frequency Doubler/Multiplier." In 2017 IEEE MTT-S International Microwave and RF Conference (IMaRC). IEEE, 2017. http://dx.doi.org/10.1109/imarc.2017.8449705.

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Stanic, Steve. "Panama City 2003 Broadband Shallow-water Acoustic Coherence Experiments." In HIGH FREQUENCY OCEAN ACOUSTICS: High Frequency Ocean Acoustics Conference. AIP, 2004. http://dx.doi.org/10.1063/1.1843033.

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Chapman, Ross. "Geoacoustic Inversion of Broadband Data from the Florida Straits." In HIGH FREQUENCY OCEAN ACOUSTICS: High Frequency Ocean Acoustics Conference. AIP, 2004. http://dx.doi.org/10.1063/1.1842995.

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Srinivasan, Kartik. "Broadband soliton microresonator frequency combs." In Ultrafast Phenomena and Nanophotonics XXV, edited by Markus Betz and Abdulhakem Y. Elezzabi. SPIE, 2021. http://dx.doi.org/10.1117/12.2578934.

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Dai, Yitang, Haijie Yu, Kun Xu, Feifei Yin, Yuejeng Ji, and Jintong Lin. "Optical-frequency-comb-based broadband radio frequency channelization." In 2013 12th International Conference on Optical Communications and Networks (ICOCN). IEEE, 2013. http://dx.doi.org/10.1109/icocn.2013.6617220.

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Chandler, H. "Broadband Temporal Coherence Results From the June 2003 Panama City Coherence Experiments." In HIGH FREQUENCY OCEAN ACOUSTICS: High Frequency Ocean Acoustics Conference. AIP, 2004. http://dx.doi.org/10.1063/1.1843036.

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Reports on the topic "Broadband frequency"

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Culver, Richard L. Hf Broadband Time/Frequency Spreading. Fort Belvoir, VA: Defense Technical Information Center, September 1999. http://dx.doi.org/10.21236/ada630194.

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SHerstneva, A. A. Design schematic of a low-noise amplifier over broadband frequency range. OFERNIO, March 2021. http://dx.doi.org/10.12731/ofernio.2021.24792.

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Lavery, Andone C. Laboratory Measurements of Multi-Frequency and Broadband Acoustic Scattering from Turbulent and Double-Diffusive Microstructure. High-Frequency Broadband Acoustic Scattering from Non-Linear Internal Waves during SW06. Fort Belvoir, VA: Defense Technical Information Center, May 2010. http://dx.doi.org/10.21236/ada521009.

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Lavery, Andone C. Analysis of High-Frequency Broadband Acoustic Scattering from Non-Linear Internal Waves During SW06. Fort Belvoir, VA: Defense Technical Information Center, September 2009. http://dx.doi.org/10.21236/ada531378.

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Lavery, Andone C. Continued Analysis of High-Frequency Broadband Acoustic Scattering from Non-Linear Internal Waves during SW06. Fort Belvoir, VA: Defense Technical Information Center, September 2010. http://dx.doi.org/10.21236/ada542102.

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Vernon, Frank L., Robert J. Mellors, and David J. Thomson. Broadband Signal Enhancement of Seismic Array Data: Application to Long-Period Surface Waves & High Frequency Wavefields. Fort Belvoir, VA: Defense Technical Information Center, April 1998. http://dx.doi.org/10.21236/ada343629.

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Lavery, Andone C. High-Frequency Broadband Acoustic Scattering from Temperature and Salinity Microstructure: From Non-Linear Internal Waves to Estuarine Plumes. Fort Belvoir, VA: Defense Technical Information Center, September 2007. http://dx.doi.org/10.21236/ada541144.

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Bishop, Nicholas A., Mohammod Ali, Jason Miller, David L. Zeppettella, William Baron, and James Tuss. A Broadband High-Gain Bi-Layer Log-Periodic Dipole Array (LPDA) for Ultra High Frequency (UHF) Conformal Load Bearing Antenna Structures (CLAS) Applications. Fort Belvoir, VA: Defense Technical Information Center, August 2014. http://dx.doi.org/10.21236/ada609576.

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Farahbod, A. M., and J. F. Cassidy. An overview of seismic attenuation in the Eastern Canadian Arctic and the Hudson Bay Complex, Manitoba, Newfoundland and Labrador, Nunavut, Ontario, and Quebec. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/330396.

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In this study we investigated coda-wave attenuation (QC) from the eastern Canadian Arctic in Nunavut and the Hudson Bay complex including portions of northern Manitoba, Ontario, Quebec and Labrador. We used earthquake recordings from 15 broadband and 3 short period seismograph stations of the Canadian National Seismic Network (CNSN) and 29 broadband stations of the POLARIS network across the region. Our dataset is comprised of 637 earthquakes recorded between 1985 and 2021 with magnitudes ranging from 1.3 to 6.1, depths from 0 to 20 km and epicentral distances of 5 to 100 km. This gives a total of 246 high signal-to-noise (S/N) traces (S/N[lesser/equal]5.0) useful for QC calculation (with a maximum ellipse parameter, a2, of 100) across the region. Coda windows were selected to start at tc = 2tS (two times the travel time of the direct S wave), and were filtered at center frequencies of 2, 4, 8, 12 and 16 Hz. Our study reveals a consistent pattern. We find that in the northern section of the study area, the highest Q0 values (e.g., Q0 of 110 and 112) are at station POIN and station RES, respectively, which are located in the older Archean province. The lowest Q0 values that we find (e.g., Q0 of 55 and 61) are at station AKVQ and IVKQ respectively, located in northern Quebec. Smaller Q0 values for stations in the south are explained by the younger age of the rocks and proximity to the main fault systems. An average for all the data results in a Q relationship of QC = 82f1.08 for the frequency band of 2 to 16 Hz for the entire region.
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Grossman, P. Group velocity effects in broadband frequency conversion on OMEGA. 1998 summer research program for high school juniors at the University of Rochester`s Laboratory for Laser Energetics: Student research reports. Office of Scientific and Technical Information (OSTI), March 1999. http://dx.doi.org/10.2172/362523.

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Journal articles Dissertations / Theses Books
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