Готові списки джерел за темами / DUAL-RESONANCE ANTENNA

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Добірка наукової літератури з теми "DUAL-RESONANCE ANTENNA"

Автор: Grafiati

Опубліковано: 11 вересня 2023

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Статті в журналах з теми "DUAL-RESONANCE ANTENNA"

Park, Daesung, and Jaehoon Choi. "A Dual-Band Dual-Polarized Antenna with Improved Isolation Characteristics for Polarimetric SAR Applications." Applied Sciences 11, no. 21 (October 26, 2021): 10025. http://dx.doi.org/10.3390/app112110025.

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A dual-band dual-polarized antenna with high isolation characteristics is proposed for polarimetric synthetic aperture radar (PolSAR) applications. The antenna consists of four dipole antennas and 2 × 2 patch antenna arrays operating at the P-band (450–730 MHz) and Ka-band (34–36 GHz), respectively. The dipole antennas and the patch antenna arrays need dual-linear polarization characteristics to acquire PolSAR data. Improvements in the isolation characteristics at the P-band are achieved by inserting a metamaterial absorber with a fractal geometry between the transmitting (Tx) and receiving (Rx) dipole antennas. Without the absorber, the simulated isolation characteristics between the Tx and Rx antennas are lower than 19.2 dB over the target band. On the other hand, with the absorbers, the simulated isolation characteristics are higher than 23.44 dB over the target band, and remarkable improvement is achieved around the resonance frequency of the absorber. The measured results are in good agreement with the simulated ones, showing that the proposed antenna can be a good candidate for PolSAR applications.

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Kim, Donghyuk, Daniel Hernandez, and Kyoung-Nam Kim. "Design of a Dual-Purpose Patch Antenna for Magnetic Resonance Imaging and Induced RF Heating for Small Animal Hyperthermia." Applied Sciences 11, no. 16 (August 8, 2021): 7290. http://dx.doi.org/10.3390/app11167290.

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The popularity of patch antennas in magnetic resonance imaging (MRI) has reduced because of the large size required for patch antennae to resonate. Since the size of the patch antenna is associated with the wavelength and the wavelengths that are used in MRI are substantially large, large antennas are used. Methods of reducing patch antenna sizes have been proposed; however, these methods reduce the penetration depth and uniformity. In this study, we reduced the area of the patch antenna by 30% by folding the ground and patch planes in a zigzag pattern. The patch antenna produced two main resonant modes. The first mode produced a uniform magnetic field that was used for MRI. The second mode produced a strong and focused electric (|E|)-field, which was used for radiofrequency (RF) heating. Furthermore, we explored the use of a combination of two patch antennas aligned along the z-axis to provide a circular uniform magnetic flux density (|B1|) field at 300 MHz, which corresponds to the Larmor frequency in the 7T MRI system. In addition, the patch antenna configuration will be used for RF heating hyperthermia operating at 1.06 GHz. The target object was a small rat with insertion of colon cancer. Using the proposed configuration, we achieved |B1|-field uniformity with a standard deviation of 3% and a temperature increment of 1 °C in the mimic cancer tissue.

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Mondal, Saikat, Saranraj Karuppuswami, Deepak Kumar, Amanpreet Kaur, and Premjeet Chahal. "A Miniaturized Dual Band Antenna for Harmonic RFID Tag." International Symposium on Microelectronics 2019, no. 1 (October 1, 2019): 000033–36. http://dx.doi.org/10.4071/2380-4505-2019.1.000033.

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Abstract A miniaturized antenna is required for a small form factor RFID tag. For harmonic RFID tag, the tag should be capable of receiving and transmitting at two different frequencies (fundamental and harmonic). Implementation of two different antennas for the operation would increase the footprint of the antenna. Hence, an optimized antenna structure is proposed, which will have a small form factor while maintaining a considerable gain. The dual band antenna would be capable of receiving at fundamental frequency and transmit information at harmonic frequency while maintaining small tag size. The dual band antenna has a miniaturized rectangular board dimension of 96.5 mm and 81 mm with resonance at 434 MHz at low frequency and 860 MHz to 1000 MHz at high frequency. The harmonic tag was designed with nonlinear transmission line and the dual band antenna. The harmonic RF tag would be useful for numerous RF applications where the single frequency tags will not be a good option such as underground object tagging, tag detection in an industrial set up with strong reflectors such a metal in the vicinity. In this paper, the design, fabrication and characterization of dual band harmonic RFID tag antenna is presented.

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Ortiz, Noelia, Francisco Falcone, and Mario Sorolla. "Gain Improvement of Dual Band Antenna Based on Complementary Rectangular Split-Ring Resonator." ISRN Communications and Networking 2012 (March 20, 2012): 1–9. http://dx.doi.org/10.5402/2012/951290.

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A simple and successful dual band patch linear polarized rectangular antenna design is presented. The dual band antenna is designed etching a complementary rectangular split-ring resonator in the patch of a conventional rectangular patch antenna. Furthermore, a parametric study shows the influence of the location of the CSRR particle on the radiation characteristics of the dual band antenna. Going further, a miniaturization of the conventional rectangular patch antenna and an enhancement of the complementary split-ring resonator resonance gain versus the location of the CSRR on the patch are achieved. The dual band antenna design has been made feasible due to the quasistatic resonance property of the complementary split-ring resonators. The simulated results are compared with measured data and good agreement is reported.

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Ahmed, Z., M. M. Ahmed, M. B. Ihsan, A. A. Chaudhary, and J. K. Arif. "Novel dual band patch antenna With Gap coupled composite right/left-handed transmission line." International Journal of Microwave and Wireless Technologies 11, no. 1 (August 7, 2018): 87–93. http://dx.doi.org/10.1017/s1759078718001162.

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AbstractA novel low profile dual band patch antenna is presented. It consists of a composite right/left-handed transmission line (CRLH TL) unit cell gap coupled with the radiating edge of a rectangular patch antenna. The dual band behavior is achieved by coupling the zeroth order resonance mode of CRLH TL and TM10mode of the patch antenna. It is shown that frequency ratio can be changed by varying the gap between the patch and CRLH TL unit cell. The proposed configuration enables frequency reconfigurability by changing the CRLH TL unit cell using a switch. A prototype of the antenna having frequency ratiof2/f1= 1.08 is designed and fabricated. The proposed antenna shows measuredS11≤ −10 dB bandwidth of 100 and 50 MHz at resonance frequencies off1= 4.84 andf2= 5.22 GHz, respectively. A 2 × 2 dual band CRLH TL coupled patch array is also presented, showing more than 12.7 dBi gain at both resonance frequencies.

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Wang, H. "Dual-resonance monopole antenna with tuning stubs." IEE Proceedings - Microwaves, Antennas and Propagation 153, no. 4 (2006): 395. http://dx.doi.org/10.1049/ip-map:20050110.

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Kan, H. K., R. B. Waterhouse, A. Y. J. Lee, and D. Pavlickovski. "Dual-resonance spiral-like shorted patch antenna." Electronics Letters 41, no. 10 (2005): 577. http://dx.doi.org/10.1049/el:20050533.

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Xu, He-Xiu, Guang-Ming Wang, and Jian-Qiang Gong. "Compact Dual-Band Zeroth-Order Resonance Antenna." Chinese Physics Letters 29, no. 1 (January 2012): 014101. http://dx.doi.org/10.1088/0256-307x/29/1/014101.

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Dahri, M. Hashim, M. R. Kamaruddin, M. H. Jamaluddin, M. Inam, S. Z. N. Zool Ambia, and N. Shafie. "Dual resonance element for broadband reflectarray antenna." Indonesian Journal of Electrical Engineering and Computer Science 13, no. 2 (February 1, 2019): 556. http://dx.doi.org/10.11591/ijeecs.v13.i2.pp556-561.

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<span>A dual resonance reflectarray unit cell element has been proposed which evolved from a square patch element to enhance its bandwidth performance. A bend in the width of the element is used to modify its dimensions and surface currents for broadband operation. The results have been analyzed in the frequency band of 24 GHz to 28 GHz. Two different combinations of its dimensions are selected for the investigating of its various performance parameters. A maximum static phase range of 432° and 255° have been obtained with selected dimensions. The wide-band features of proposed unit cell element can be used particularly to design a broadband reflectarray antenna for future fast communication systems.</span>

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Hossain, Md Ababil, Md Saimoom Ferdous, Shah Mahmud Hasan Chowdhury, and Md Abdul Matin. "Novel Dual Band Microstrip Circular Patch Antennas Loaded with ENG and MNG Metamaterials." International Journal of Antennas and Propagation 2014 (2014): 1–9. http://dx.doi.org/10.1155/2014/904374.

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Novel design of a dual band microstrip circular patch antenna loaded with ENG (εnegative) metamaterial has been shown in the first section. Using ENG metamaterial instead of the conventional dielectric, unconventional TMδ10(1<δ<2) mode was produced to yield a dual band performance. Optimized parameters such as permittivity (ε1) and filling ratio (η) of metamaterials were selected with the aid of a MATLAB based parameter optimization algorithm, developed for all these sort of patch antennas. In the second section, a dual band circular patch antenna loaded with MNG (µ negative) metamaterial has been reported. An unconventional modified TMδ10(0<δ<1) mode has been produced along with conventional TM110mode due to using MNG metamaterial. Here also the optimum values of permeability (µ1) and filling ratio (η) for these sorts of patch antennas have been calculated from a MATLAB based parameter optimization algorithm. Both the proposed antennas provide good and resonance and satisfactory radiation performances (directivity, radiation efficiency, and gain) with a dual band performance.

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Більше джерел

Дисертації з теми "DUAL-RESONANCE ANTENNA"

Adhikari, Manoj. "Design and Optimization of a Miniature Radiation Pattern Reconfigurable Antenna for 2.4 GHz Band and a Dual Tuned Birdcage Coil for Magnetic Resonance Imaging." BYU ScholarsArchive, 2012. https://scholarsarchive.byu.edu/etd/2917.

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This thesis describes development of a miniature reconfigurable antenna and optimization of a dual tuned birdcage coil. The design goals for the miniature reconfigurable antennas are resonance center frequency of 2.44 GHz, bandwidth of 2.4 GHz - 2.48 GHz, size of 0.8 cm x 1.2 cm, radiation efficiency of 70%, pattern correlation coefficient of 0.3 and input impedance of 50 Ω. The main goals to be achieved from the birdcage coil are the better homogeneity and higher signal to noise ratio than the existing coil. The design and optimization of both antenna and birdcage coil were done using simulation software and MATLAB. Wireless communications have progressed rapidly in last decade and communication devices are becoming smaller and smaller. With miniaturization of devices, dimensions of antennas need to be reduced accordingly. In recent years engineers have not only focused on miniaturization but also on the reconfigurability of the antenna. The functionality and performance of an antenna can be greatly improved by a reconfigurable antenna. However, designing such an antenna can be a tricky task. This thesis addresses issues that are faced during design of such miniature reconfigurable antenna. It also describes design and optimization of such an antenna. The modeled and measured results for the miniature reconfigurable antennas were very close except the built antenna requires frequency tuning and better switching technique. Magnetic resonance imaging (MRI) is an imaging modality that provides high quality images. Radio frequency (RF) coils play an important role in MRI. RF coils act like an antenna that transmits RF energy and receives energy as well. The most commonly-used RF coil for volume imaging is the birdcage coil. This thesis describes an optimization of a birdcage coil that is dual tuned for sodium and hydrogen frequencies. The modeled coil has better performance compared to the existing coil.

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YADAV, RAKESH KUMAR. "DESIGN AND ANALYSIS OF DUAL-BAND SWASTIKA SHAPED MICRO-STRIP PATCH ANTENNA." Thesis, 2017. http://dspace.dtu.ac.in:8080/jspui/handle/repository/16529.

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In this paper, a novel single-layer circular swastika shaped antenna with dual-band characteristics is presented. The proposed patch antenna, with design operating frequencies of5.5 GHz and 10.3 GHz, is targeted for applications in C-band and X-band. More importantly, the circular swastika-shaped micro strip patch antenna exhibits a theta polarized radiation pattern with gains of 11.17 dB and 9.05 dB with corresponding reflection Coefficients of (VSWR = 1.419) and (VSWR =1.046) at 5.5 GHz and 10.3 GHz, respectively. The Measurements of the fabricated patch antenna corroborate the simulation results obtained in HFSS. This dual-resonance antenna, with comparatively high gain performance, can be easily integrated into systems for satellite and radar communications.

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Частини книг з теми "DUAL-RESONANCE ANTENNA"

U., Surendar, Senthilkumar Subramaniyan, William Johnson, Umamaheswari K., Nataraj B., and Rengarajan A. "Planar Metamaterial-Inspired Circular Ring Antenna With Neutralization Lines for Dual-Band Applications." In Advances in Wireless Technologies and Telecommunication, 412–31. IGI Global, 2022. http://dx.doi.org/10.4018/978-1-7998-9636-4.ch020.

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This chapter presents a simple, metamaterial-loaded planar ring antenna for WLAN/WiMAX applications. The proposed antenna is equipped with two neutralization lines to improve performance in the desired operating bands. The use of neutralization lines as conducting strip allows the antenna to function at the upper resonance-3.5GHz and the incorporation of complementary split ring resonator at the rear of the substrate benefits in the antenna's compact size. Due to the incorporation of a quarter wave transformer with a semicircular ring construction, the ring antenna produces better dual-band response. The upper resonance 3.5GHz is obtained due to the combination of tuned semicircular ring and circular ring along with the conducting strip in the structure. The fabricated antenna is printed on FR4 substrate with dimensions 10×10×1.6 mm3. The simulated results are verified by experimenting the fabricated antenna. It offered 14.6% bandwidth in the lower resonance 2.4 GHz and 8.5% bandwidth at upper resonant frequency 3.5GHz with radiation characteristics suitable for the WLAN/WiMAX applications.

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S B, Nivetha, and Bhuvaneswari B. "Investigation of Meandered Antenna for WLAN Application." In Intelligent Systems and Computer Technology. IOS Press, 2020. http://dx.doi.org/10.3233/apc200167.

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In this paper patch antenna using coplanar waveguide structure is designed. The dimension of the antenna is 12x22mm. The substrate material used is FR4 with thickness of 1.6mm. The dual band frequency is obtained by creating slot in the patch. Four slot is created in the patch. The frequency obtained for proposeddesign is 2.5 and 5.00GHz. The gain obtained for proposed antenna is 2.8dBi. The return loss obtained for proposed design is -35db at 5GHz and -34dB at 2.5GHz frequency. The meander antenna with two arm is designed using normal ground structure. Single band resonance is obtained for meander antenna with two arm at the frequency of 5.7GHz. The coplanar waveguide structure is chosen for dual band resonance and reduction in size. The designed antenna is used for WLAN application.

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Kaur, Manpreet. "Compact Dual Fractal Curves-Based Microstrip Patch Antenna for 5G Applications." In Advances in Wireless Technologies and Telecommunication, 125–40. IGI Global, 2023. http://dx.doi.org/10.4018/978-1-6684-7000-8.ch007.

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The aim of this work is to design and characterize a compact 5G antenna with an appreciable bandwidth. In the suggested antenna, two fractal curves are applied onto the conducting patch that helped to achieve the targeted operational characteristics. The whole patch is printed on the chosen FR4 material. The modified rectangular patch is placed on the top side, whereas a partial ground is placed on the bottom side. The antenna size observed is 45 mm2. The overall adjustments of the specific design parameters are carried out for better S11 characteristics at the fundamental resonance. The operational band stretches from 25.99 GHz to 27.72 GHz with a fractional bandwidth of 6.4%. The designed antenna showed resonance at 26.75 GHz with S11 value -21.00 dB. The proposed antenna possesses good S11 characteristics, appreciable gain, and significant bandwidth at the operational frequency band. Moreover, the influence of variations in the antenna geometry has also been demonstrated for deep understanding.

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Тези доповідей конференцій з теми "DUAL-RESONANCE ANTENNA"

Kilic, Bahadir, Taha Imeci, Oguzhan Salih Gungor, Mustafa Imeci, Negar Majidi, and Mohammad Rahim Sobhani. "Dual resonance proximity coupled patch antenna." In 2018 International Applied Computational Electromagnetics Society Symposium (ACES). IEEE, 2018. http://dx.doi.org/10.23919/ropaces.2018.8364308.

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Yavuzoglu, Ahmet Safak, Gokhan Atilla, Hakan Cayan, and S. Taha Imeci. "High gain dual-resonance microstrip antenna." In 2015 Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS). IEEE, 2015. http://dx.doi.org/10.1109/wmcas.2015.7233201.

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Yoon, Ji Hwan, Woosung Lee, and Young Joong Yoon. "A dual zeroth-order resonance antenna." In 2009 IEEE Antennas and Propagation Society International Symposium (APSURSI). IEEE, 2009. http://dx.doi.org/10.1109/aps.2009.5171814.

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Kaushal, Deepanshu, T. Shanmuganantham, and K. Bharath Kumar. "Unified slotted circular antenna for dual band resonance." In 2017 International Conference on Intelligent Computing, Instrumentation and Control Technologies (ICICICT). IEEE, 2017. http://dx.doi.org/10.1109/icicict1.2017.8342698.

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Parrini, Filippo, Federico Papi, and Massimiliano Pieraccini. "Double resonance L-C trap for dual-band dipole antenna." In 2014 IEEE Conference on Antenna Measurements & Applications (CAMA). IEEE, 2014. http://dx.doi.org/10.1109/cama.2014.7003345.

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Khai Nguyen, T. Q., Leonardo Lizzi, and Fabien Ferrero. "Dual-Matching for Single Resonance Miniaturized Antenna for IoT applications." In 2018 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting. IEEE, 2018. http://dx.doi.org/10.1109/apusncursinrsm.2018.8609224.

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Jian-gang Liang, Tang-jing Li, and Ya-qiao Liu. "Miniaturized dual-band zeroth-order resonance antenna with zero refraction characteristic." In 2016 IEEE International Conference on Microwave and Millimeter Wave Technology (ICMMT). IEEE, 2016. http://dx.doi.org/10.1109/icmmt.2016.7762402.

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Zhang, Xujie, Xuehui Guan, Baoping Ren, Shaopeng Wan, and Mengrou Xu. "A Broadband Dual-Polarized Multi-Resonance Antenna for Base Station Applications." In 2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM). IEEE, 2021. http://dx.doi.org/10.1109/iwem53379.2021.9790673.

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Mufti, S., A. Tennant, C. J. Smith, and L. Seed. "3D dual resonance, high efficiency, electrically small planar inverted-F antenna." In Wideband and Multi-Band Antennas and Arrays for Civil, Security [amp ] Military Applications. Institution of Engineering and Technology, 2015. http://dx.doi.org/10.1049/ic.2015.0144.

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Liang, Yu-Dong, Neng-Wu Liu, Guang Fu, and Lei Zhu. "A Wideband Compact Dual-Polarized Microstrip Patch Antenna under Triple-Resonance." In 2021 Cross Strait Radio Science and Wireless Technology Conference (CSRSWTC). IEEE, 2021. http://dx.doi.org/10.1109/csrswtc52801.2021.9631621.

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