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Journal articles on the topic 'Coaxial resonator'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Xie, Yong Chao, Jin Yan Shi, and Xue Yong Ding. "Comparatively Study of Coaxial Waveguide and Open Coaxial Cavity." Advanced Materials Research 694-697 (May 2013): 1417–20. http://dx.doi.org/10.4028/www.scientific.net/amr.694-697.1417.

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In this paper, the computational formula of field distribution in a coaxial waveguide and the field distribution, resonant frequency and Q factors of open coaxial resonator are introduced. The S21 and the field profile of the TEM mode in a coaxial waveguide, and the field profile and E-field of the mode in a coaxial resonator is gained by the software CST microware studio. The truth that an open coaxial cavity is virtually a slow-varied section coaxial waveguide is gained.

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2

Tan, Biao, and Shu Bing Su. "Measurement of Permittivity of Ferroelectrics Using Coaxial Resonator." Applied Mechanics and Materials 109 (October 2011): 195–98. http://dx.doi.org/10.4028/www.scientific.net/amm.109.195.

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This paper presents a coaxial resonator technique applied for the measurement of the permittivity of ferroelectric thick film. A 1/4-wavelength coaxial resonator with appropriate dimensions were designed and made for measurements so that there is only TEM fundamental resonance in the interest frequency range. The permittivity may be extracted from the measured TEM fundamental resonant frequency in the resonator. The equivalent capacitance to the part between sample and open end of coaxial line is discussed, in which the boundary element numerical method was used for modeling the capacitance. The resonant frequency was measured using network analyzer and good experimental results were obtained.

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3

Aouidad, Hakim, Eric Rius, Jean-François Favennec, Alexandre Manchec, and Yann Clavet. "UHF second order bandpass filters based on miniature two-section SIR coaxial resonators." International Journal of Microwave and Wireless Technologies 8, no. 8 (September 2, 2015): 1187–96. http://dx.doi.org/10.1017/s1759078715001300.

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This paper describes a concept of stepped impedance resonators (SIR) built from two coaxial structures fitted inside one another. The resonator is built out of a succession of two coaxial sections in cascade, where the ground conductor of the first one is the central core of the next, or vice-versa. An advantageous property of SIR is that they allow a substantial reduction in size, while keeping away the first harmonic and without strongly degrading the quality factor. After describing the theoretical behavior of the resonator, we will then present the specific properties of this approach in second order filter, conceived, and realized in the UHF band. With this example, we will also address flexibility and tunability aspects, which are the other potentially useful properties of the structure. Measurements and simulations are presented and discussed. The architecture resembles a set of two Russian dolls that fit inside one another.

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4

Borodaev, V. A., Yu I. Konyaev, V. F. Kravchenko, I. E. Pedchenko, and Yu A. Prokopchuk. "A coaxial resonator of special shape." Measurement Techniques 35, no. 10 (October 1992): 1197–200. http://dx.doi.org/10.1007/bf00977483.

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5

Xie, Yong Chao. "Effect of Parallel Misalignment in a 9GHz Open Coaxial Resonator." Advanced Materials Research 753-755 (August 2013): 968–72. http://dx.doi.org/10.4028/www.scientific.net/amr.753-755.968.

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The effect of inner-rod parallel misalignment in a 9-GHz open coaxial resonator is studied by means of the software CST microwave studio. Results show that the parallel misalignments between the inner rod and outer wall have substantial influences on the field profile, resonant frequency, and Q factors of an open coaxial resonator. So in the practical of engineering applications, we should try to avoid the occurrence of eccentric between the inner rod and outer wall due to technological factors.

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6

Hameed, Musab, Gaobiao Xiao, Lina Qiu, Can Xiong, and Tayyab Hameed. "Multiple-Mode Wideband Bandpass Filter Using Split Ring Resonators in a Rectangular Waveguide Cavity." Electronics 7, no. 12 (November 26, 2018): 356. http://dx.doi.org/10.3390/electronics7120356.

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This paper presents a simple split ring resonator excitation to realize a multi-mode wideband bandpass filter in a rectangular waveguide cavity. The proposed resonator employs two rectangular split rings attached with two coaxial probes extended into the cavity to excite two resonant modes, unlike the conventional cavity resonators which employ conductive cylinders in the cavities to achieve the same results. A hybrid magnetic (HM) mode and a hybrid electric (HE) mode are the two hybrid modes excited to realize the wideband bandpass filter. The filter operates at 2.5 GHz center frequency with 53% fractional bandwidth. Finally, the prototypes of a second and a fourth order filter are fabricated for results validation. Measured results are in good agreement with the simulated ones.

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7

Xie, Yong Chao, and Tong Liu. "Effect of Oblique Misalignment in a 9GHz Open Coaxial Resonator." Applied Mechanics and Materials 392 (September 2013): 461–65. http://dx.doi.org/10.4028/www.scientific.net/amm.392.461.

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The effect of inner-rod oblique misalignment in a 9-GHz open coaxial resonator is studied by means of the software CST microwave studio. Results show that the oblique eccentric between the inner rod and outer wall have substantial influences on the field profile, resonant frequency, and Q factors of an open coaxial resonator. And the oblique misalignment has more serious effect than the parallel misalignment. So in the practical of engineering applications, we should try to avoid the occurrence of eccentric between the inner rod and outer wall during to technological factors.

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8

Zhan, Jin-Song, Shi-Wei Dong, Li-Ming Gong, Shao-Feng Dong, Xiao-Long Chen, and Jia-Li Wang. "A MULTI-EVANESCENT-MODE COAXIAL CAVITY RESONATOR." Progress In Electromagnetics Research 144 (2014): 193–200. http://dx.doi.org/10.2528/pier13112902.

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9

Michail, G. Ch, and N. K. Uzunoglu. "Accurate Design of Coaxial Cavity Resonator Filters." Journal of Electromagnetic Waves and Applications 18, no. 8 (January 2004): 1119–31. http://dx.doi.org/10.1163/1569393042955388.

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10

Barrall, G. A., Y. K. Lee, and G. C. Chingas. "Radial RF Imaging Using a Coaxial Resonator." Journal of Magnetic Resonance, Series A 106, no. 1 (January 1994): 132–34. http://dx.doi.org/10.1006/jmra.1994.1015.

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11

Poyedinchuk, A. E., V. P. Shestopalov, and N. P. Yashina. "Spectral theory of a coaxial-waveguide resonator." USSR Computational Mathematics and Mathematical Physics 26, no. 2 (January 1986): 142–48. http://dx.doi.org/10.1016/0041-5553(86)90023-6.

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12

Lan, Di, Julio Dewdney, I.-Tsang Wu, Ivan Rivera, Adrian Avila, and Jing Wang. "Dual-frequency MEMS based Oscillator using a single ZnO-on-SOI Resonator." International Symposium on Microelectronics 2015, no. 1 (October 1, 2015): 000740–44. http://dx.doi.org/10.4071/isom-2015-poster5.

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In this paper, an oscillator technology with high-Q MEMS resonator as its tank circuit is presented to validate its key functionality as a stable frequency reference across a wide spectrum of frequencies. Particularly, a piezoelectrically-transduced contour-mode MEMS resonator is strategically designed to operate at two distinct layout-defined mechanical modal frequencies (259.5MHz and 436.7MHz). These devices were characterized and modeled by an extracted equivalent LCR circuit to facilitate the design of the oscillator using a standard circuit simulator. For this preliminary study, the MEMS resonators have been integrated with the sustaining amplifier circuit at PCB level using wire-bonding technique and coaxial connectors. As shown by the time-domain measurements, these oscillators are capable of selectively locking into the resonance frequency of the constituent MEMS resonator to generate a stable sinusoidal waveform with peak-to-peak amplitude of 4.6V at 259.5 MHz and 2.3V at 436.7 MHz, respectively. Meanwhile, the fundamental oscillation frequency and it harmonics can be easily observed in a measured frequency-domain spectrum.

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13

Fatkullin, Riyaz, Sergey Bogomolov, Konstantin Kuzmenkov, and Andrey Efremov. "Compact 2.45 GHz ECR Ion Source for generation of singly-charged ions." EPJ Web of Conferences 177 (2018): 08003. http://dx.doi.org/10.1051/epjconf/201817708003.

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2.45 GHz ECR ion sources are widely used for production of protons, single charged heavy ions and secondary radioactive ion beams. This paper describes the development of a compact ECR ion source based on 2.45 GHz coaxial resonator. The first results of extracted current measurements at different resonator configuration as a function of UHF frequency, power and gas flow are presented.

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14

Lu, Yunlong, Yi Wang, Taijun Liu, Bo Yu, and Kai Li. "Miniaturized substrate-integrated coaxial line bandpass filter with improved upper stopband." International Journal of Microwave and Wireless Technologies 9, no. 7 (January 30, 2017): 1441–45. http://dx.doi.org/10.1017/s1759078716001422.

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A miniaturized substrate-integrated coaxial line (SICL) bandpass filter with improved upper stopband using asymmetrical spiral stub-loaded resonators is presented in this paper. Owing to the space-filling feature of the spiral structure, the size of the proposed filter is significantly reduced. A theoretical analysis is carried out to examine the resonance property of the proposed resonator. It is found that the frequency ratios of the second and third harmonics to the fundamental frequency can be extended to 2.86 and 4.4. Benefiting from the circuit structure and SICL technology, the designed filter has a small size, wide stopband, low crosstalk, and high-density integration ability. The measured results show that the proposed filter, with dimensions of 0.051λ0 × 0.044λ0, operates at 1.056 GHz and the 20-dB rejection band is extended to 3.94f0.

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15

Li, Li-Qun, Chang-Hong Liang, Gang Li, and Zhe Sun. "THE DESIGN TECHNIQUE FOR COAXIAL RESONATOR CAVITY DUPLEXER." Progress In Electromagnetics Research M 2 (2008): 105–14. http://dx.doi.org/10.2528/pierm08033102.

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16

Lee, Yun-Min, Jin-Kook Kim, and Jung Hur. "Design of An Open-Ended Coaxial Cavity Resonator." Journal of the Institute of Webcasting, Internet and Telecommunication 13, no. 4 (August 31, 2013): 201–8. http://dx.doi.org/10.7236/jiibc.2013.13.4.201.

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17

Bilous, R. I., S. P. Martynyuk, A. P. Motornenko, I. G. Skuratovskiy, and O. I. Khazov. "T- AND H- MODES IN WAVEGUIDE COAXIAL RESONATOR." Telecommunications and Radio Engineering 69, no. 6 (2010): 489–93. http://dx.doi.org/10.1615/telecomradeng.v69.i6.30.

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18

Jaimes-Vera, Aline, Ignacio Llamas-Garro, and Alonso Corona-Chavez. "COAXIAL NARROWBAND FILTERS USING A VERSATILE SUSPENDED RESONATOR." Progress In Electromagnetics Research 115 (2011): 79–94. http://dx.doi.org/10.2528/pier11020402.

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19

Barroso, J. J., and R. A. Correa. "Coaxial resonator for a megawatt 280 GHz gyrotron." International Journal of Infrared and Millimeter Waves 12, no. 7 (July 1991): 717–28. http://dx.doi.org/10.1007/bf01008901.

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20

Torrisi, Giuseppe, Giorgio Sebastiano Mauro, Lorenzo Neri, Luciano Allegra, Antonio Caruso, Giuseppe Gallo, Alberto Longhitano, Mario Maggiore, Danilo Rifuggiato, and Antonino Spartà. "Electromagnetic Simulations and Measurements of the K-800 Superconducting Cyclotron RF Cavity at INFN-LNS." Applied Sciences 11, no. 13 (June 28, 2021): 5995. http://dx.doi.org/10.3390/app11135995.

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In this paper, a complete three-dimensional (3D) RF model of the cyclotron coaxial resonator—including the coaxial sliding shorts, the “Liner” vacuum chamber, the coupler, the trimmer, and the high RF voltage “Dee” structures—has been developed. An eigenmode analysis was used to simulate the tuning of the resonator in the operating frequency range of 15–48 MHz obtained by two movable sliding shorts and a trimmer. A driven analysis has been performed in order to compute the |S11| parameter (or impedance matching) of the cavity excited by a movable coaxial power coupler. The numerical simulations have been performed using the different peculiarities of two commercial tools, COMSOL Multiphysics and CST microwave studio. Experimental validation of the developed model is presented. The evidence of an unwanted electric field component, orthogonal to the accelerating field, was discovered and a mitigation is also proposed. The impact of the proposed modification was evaluated by using a 3D beam dynamics code under development in the framework of the Superconducting Cyclotron upgrade ongoing at INFN-LNS.

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21

Paul, Robert B., A. Ege Engin, and Jerry Aguirre. "Flip Chip Underfill RF Characterization." International Symposium on Microelectronics 2019, no. 1 (October 1, 2019): 000243–47. http://dx.doi.org/10.4071/2380-4505-2019.1.000243.

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Abstract To develop reliable high-speed packages, characterization of the underfill material used in the flip-chip process has become of greater importance. The underfill, typically an epoxy resin-based material, offers thermal and structural benefits for the integrated circuit (IC) on package. With so many inputs and outputs (IOs) in close proximity to one another, the integrated circuits on package can have unexpected signal and power integrity issues. Furthermore, chip packages can support signals only up to the frequency where noise coupling (e.g., crosstalk, switching noise, etc.) leads to the malfunctioning of the system. Vertical interconnects, such as vias and solder bumps, are major sources of noise coupling. Inserting ground references between every signal net is not practical. For the solder bumps, the noise coupling depends on the permittivity of the underfill material. Therefore, characterizing the permittivity of the underfill material helps in predicting signal and power integrity issues. Such liquid or semi-viscous materials are commonly characterized from a simple fringe capacitance model of an open-ended coaxial probe immersed in the material. The open-ended coaxial method, however, is not as accurate as resonator-based methods. There is a need for a methodology to accurately extract the permittivity of liquid or semi-viscous materials at high frequencies. The proposed method uses solid walled cavity resonators, where the resonator is filled with the underfill material and cured. Dielectric characterization is a complex process, where the physical characteristics of the cavities must be known or accurately measured. This includes the conductivity of the conductors, roughness of the conductors, the dimensions of the cavity, and the port pin locations. This paper discusses some of the challenges that are encountered when characterizing dielectrics with cavity resonators. This characterization methodology can also be used to characterize other materials of interest.

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22

Gentili, Fabrizio, Giovanni Bianchi, Luca Pelliccia, and Roberto Sorrentino. "High Q-factor compact filters with wide-band spurious rejection." International Journal of Microwave and Wireless Technologies 5, no. 6 (August 7, 2013): 729–33. http://dx.doi.org/10.1017/s1759078713000718.

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A stepped-impedance configuration for coaxial resonators is employed to realize filters in the L-, S-, and C-bands exhibiting a wide spurious-free range. The geometry of a single rod resonator is optimized, by enlarging its top head, in order to maximize the ratio between the frequency of the first higher-order mode and that of the fundamental mode. This leads to the design of a very compact filter with high Q-factors and wide spurious-free bands, up to nearly 5 times the center frequency. To prove the effectiveness of the approach, a sixth-order filter has been designed and manufactured; the comparison between the full-wave simulations and the measurement show excellent agreement.

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23

Tian, Kun Peng, Gao Feng Guo, Jun Hu Wang, and En Li. "Measurement of Complex Permittivity of Insulating Substrates with an Open-Ended Coaxial Resonator." Advanced Materials Research 1052 (October 2014): 427–32. http://dx.doi.org/10.4028/www.scientific.net/amr.1052.427.

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A novel cavity perturbation technique utilizing open-ended coaxial resonator is presented in order to measure the complex permittivity of insulating substrates at microwave frequencies. This technique can afford quite high accurate measurement results without singularities, and simply. According to the operation frequency of the resonator, the geometric parameters of the resonator are designed. Based on the perturbation technique, a new formulaic method of data analysis has been proposed which can extract complex permittivity of samples, and with the resonant frequency and the quality factor shift, one can calculate the complex permittivity of the measured materials. Experiment has been conducted with the quartz and sapphire to verify the formulaic, and the test results fully verify the correctness of the proposed method.

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24

Makeev, Yu G., and S. P. Martynyuk. "Characteristics of Magnetic Type Oscillations in Waveguide-Coaxial Resonator." Telecommunications and Radio Engineering 58, no. 1-2 (2002): 6. http://dx.doi.org/10.1615/telecomradeng.v58.i1-2.40.

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25

Belous, R. I., S. P. Martynyuk, A. P. Motornenko, I. G. Skuratovskiy, and I. O. Bilous. "Investigation of Magnetic Fundamental Mode in Waveguide-Coaxial Resonator." Telecommunications and Radio Engineering 68, no. 11 (2009): 943–50. http://dx.doi.org/10.1615/telecomradeng.v68.i11.20.

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26

Dzyubenko, M. I., V. A. Maslov, Ye N. Odarenko, and V. P. Radionov. "COAXIAL LASER RESONATOR WITH SMOOTH ADJUSTMENT OF RADIATION OUTPUT." Telecommunications and Radio Engineering 79, no. 6 (2020): 471–78. http://dx.doi.org/10.1615/telecomradeng.v79.i6.20.

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27

Hoog, N. A., M. J. J. Mayer, H. Miedema, W. Olthuis, A. A. Tomaszewska, A. H. Paulitsch-Fuchs, and A. van den Berg. "Online monitoring of biofouling using coaxial stub resonator technique." Sensing and Bio-Sensing Research 3 (March 2015): 79–91. http://dx.doi.org/10.1016/j.sbsr.2014.10.012.

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28

Jefferts, S. R., C. Monroe, E. W. Bell, and D. J. Wineland. "Coaxial-resonator-driven rf (Paul) trap for strong confinement." Physical Review A 51, no. 4 (April 1, 1995): 3112–16. http://dx.doi.org/10.1103/physreva.51.3112.

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29

Hou, Shenyong, Sheng Yu, and Hongfu Li. "RESEARCH ON EIGEN-MODE OF COAXIAL OUTER CORRUGATED RESONATOR." Progress In Electromagnetics Research C 39 (2013): 165–77. http://dx.doi.org/10.2528/pierc12120503.

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30

Kishk, Ahmed A., A. W. Glisson, and Yan Yin. "Conical dielectric resonator antennas excited by a coaxial probe." Microwave and Optical Technology Letters 29, no. 3 (2001): 160–61. http://dx.doi.org/10.1002/mop.1115.

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31

Hamsakutty, V., A. V. Praveen Kumar, G. Bindu, Vinu Thomas, Anil Lonappan, Jaimon Yohannan, and K. T. Mathew. "A multifrequency coaxial-fed metal coated dielectric resonator antenna." Microwave and Optical Technology Letters 47, no. 6 (2005): 573–75. http://dx.doi.org/10.1002/mop.21233.

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32

Hamsakutty, V., A. V. Praveen Kumar, Jaimon Yohannan, and K. T. Mathew. "Coaxial fed hexagonal dielectric resonator antenna for circular polarization." Microwave and Optical Technology Letters 48, no. 3 (2006): 581–82. http://dx.doi.org/10.1002/mop.21413.

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33

Hamsakutty, V., A. V. Praveen Kumar, Jaimon Yohannan, G. Bindu, and K. T. Mathew. "Coaxial fed hexagonal dielectric resonator antenna for multifrequency operation." Microwave and Optical Technology Letters 48, no. 5 (2006): 878–80. http://dx.doi.org/10.1002/mop.21505.

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34

Dionigi, Marco, and Mauro Mongiardo. "A novel coaxial loop resonator for wireless power transfer." International Journal of RF and Microwave Computer-Aided Engineering 22, no. 3 (February 23, 2012): 345–52. http://dx.doi.org/10.1002/mmce.20603.

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35

Gandel, Y. V., G. I. Zaginaylov, and S. A. Steshenko. "Rigorous electrodynamic analysis of resonator systems of coaxial gyrotrons." Technical Physics 49, no. 7 (July 2004): 887–94. http://dx.doi.org/10.1134/1.1778864.

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36

Pertl, Franz A., Mary Ann Clarke, and James E. Smith. "Design of a compact quarter wave coaxial cavity resonator for plasma ignition applications." International Journal of Microwave and Wireless Technologies 3, no. 4 (May 12, 2011): 485–91. http://dx.doi.org/10.1017/s1759078711000493.

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Atmospheric and higher pressure RF and microwave plasma sources have numerous applications including material processing and spectroscopy. More recently, advantages in using such discharges for combustion ignition are being investigated. A particularly simple and compact microwave discharge generating device is the quarter wave coaxial cavity resonator (QWCCR). This paper presents a new, compacted design of such a device. A simple approximate analysis of the quality factor, Q, which is a measure of the resonant electromagnetic potential step-up capability is given, and compared to experimentally measured quality factors showing reasonable agreement. Analytic results indicate that the foreshortened folded cavity quality factors are comparable to tapered coaxial cavity designs.

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37

Banafaa, Mohammed, Mohmed Jamaluddin, Samsul Dahlan, and Ayman Althuwayb. "Miniature Dual Band Button Antenna Using Cylindrical Dielectric Resonator." Applied Computational Electromagnetics Society 36, no. 4 (May 10, 2021): 479–85. http://dx.doi.org/10.47037/2020.aces.j.360415.

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This paper presents miniature dual-band cylindrical dielectric resonator antenna (CDRA) based on button antenna for wireless body area network (WBAN) applications. A button antenna is designed by stacking two CDRAs (low and high permittivity) fed by coaxial probe through the ground plane and penetrates the bottom CDRA. The prime contributions of using DRAs are to enhance the performance and to provide a compact size of antenna. However, the coaxial probe realizes two radiation patterns, monopole and broadside patterns. A comprehensive validation using CST microwave studio is carried out to determine the characteristics of the proposed button antenna. In addition, to ensure that the results are acceptable to the practitioner in this field, a prototype was fabricated and tested. The superiority of the proposed antenna is confirmed by possessing 39% more compact size compared to previously reported studies, efficiency of more than 63% and bandwidth of 4.9% and 6.6% for lower and upper band, respectively. This proposed design is a promising candidate to benefit on/off body communication devices operating at 2.4 and 5.6 GHz.

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38

Skuratovskiy, I., O. Khazov, and A. Shakhova. "A resonant short-circuit plunger as part of tunable waveguide-dielectric and waveguide-coaxial resonators built around cylindrical evanescent waveguides." RADIOFIZIKA I ELEKTRONIKA 26, no. 2 (2021): 46–53. http://dx.doi.org/10.15407/rej2021.02.046.

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Subject and Purpose. Tunable resonant structures make numerous microwave devices, among which are waveguide-dielectric and waveguide-coaxial resonators (WDR and WCR) built around cylindrical evanescent waveguides and involving a resonant short-circuit (RSC) plunger for tuning purposes. The present paper seeks to study specific features of the RSC-plunger operation in the evanescent waveguide and estimate the RSC-plunger efficiency. Method and Methodology. The RSC-plunger efficiency is approximately estimated in terms of the transmission line theory. Comparative experimental verification of the Q-factor increase is provided by an example of a 3 cm WDR resonator equipped with a RSC-plunger. Results. It has been shown that relevant formulae of the transmission line theory can be extended for the RSC-plunger efficiency estimation on the TEM and H11 oscillations. A possibility has been studied of the TEM type transformation to the H11 oscillation and back when the spurious resonance of the RSC-plunger falls within the WDR (WCR) tuning range. Conclusion. Insignificance of the effect that small deviations from the numerically predicted dimensions of the RSC-plunger exert on the RSC-plunger operation efficiency has been demonstrated. The RSC-plunger efficiency and a possibility to remove the spurious resonances from the resonator tuning range have been experimentally confirmed.

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39

Hoog, Natalia A., Mateo J. J. Mayer, Henk Miedema, Wouter Olthuis, and Albert van den Berg. "Coaxial Stub Resonator for Online Monitoring Early Stages of Corrosion." Key Engineering Materials 605 (April 2014): 111–14. http://dx.doi.org/10.4028/www.scientific.net/kem.605.111.

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Here we demonstrate the proof-of-principle of a new type of flow-through sensor to assess the corrosion rate of metal surfaces. The method can be applied to all situations where metals are exposed to a corrosive (fluidic) environment, including, for instance, the interior of pipes and tubes. Our sensing device is based on the operating principle of a quarter wave length open-ended coaxial stub resonator. The method described here can be applied for on-line monitoring corrosion.

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40

Sankaranarayanan, Dileep, Duggirala Venkata Kiran, and Biswajeet Mukherjee. "Laterally Placed CDRA with Triangular Notches for Ultra Wideband Applications." Frequenz 72, no. 1-2 (December 20, 2017): 1–6. http://dx.doi.org/10.1515/freq-2016-0294.

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AbstractIn this paper, a Coaxial probe-fed Laterally placed Cylindrical Dielectric Resonator Antenna (LCDRA) with symmetrical triangular notches is presented. The lateral surface of the Cylindrical Dielectric Resonator Antenna (CDRA) is kept on the ground plane with its longitudinal axis parallel to the ground plane. LCDRA has a lower resonant frequency than the CDRA and it offers considerably wider impedance bandwidth than CDRA. Finally, two symmetrical triangular notches are introduced on the two edges of LCDRA which is perpendicular to the axis to further improve the impedance bandwidth. The proposed antenna offers a wide impedance bandwidth (

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41

Rawat, B. S., L. Beilke, and R. E. Miller. "Design of a tapered coaxial resonator filter for mobile communications." IEEE Transactions on Vehicular Technology 41, no. 1 (1992): 1–5. http://dx.doi.org/10.1109/25.120139.

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42

Monediere, Th, M. Latrach, and F. Jecko. "Resonant Modes and Magnetic Losses in a Ferrite Coaxial Resonator." Journal of Electromagnetic Waves and Applications 6, no. 1-4 (January 1, 1992): 199–218. http://dx.doi.org/10.1163/156939392x01110.

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43

Wells, C. G., and J. A. R. Ball. "Gap capacitance of a coaxial resonator using simplified mode matching." IEE Proceedings - Microwaves, Antennas and Propagation 151, no. 5 (2004): 399. http://dx.doi.org/10.1049/ip-map:20040727.

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44

Lu, Qing-Yuan, Wei Qin, and Jian-Xin Chen. "A Novel Balanced Bandpass Filter Based on Twin-Coaxial Resonator." IEEE Microwave and Wireless Components Letters 27, no. 2 (February 2017): 114–16. http://dx.doi.org/10.1109/lmwc.2016.2646906.

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Hoog-Antonyuk, N. A., W. Olthuis, M. J. J. Mayer, D. Yntema, H. Miedema, and A. van den Berg. "On-line fingerprinting of fluids using coaxial stub resonator technology." Sensors and Actuators B: Chemical 163, no. 1 (March 2012): 90–96. http://dx.doi.org/10.1016/j.snb.2012.01.012.

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Xu, Haiqing, Hongjian Li, Zhimin Liu, Suxia Xie, Shaoli Fu, and Xin Zhou. "Tunable phaselike resonance in split coaxial gold nanotube resonator pair." Optics Communications 285, no. 13-14 (June 2012): 3202–6. http://dx.doi.org/10.1016/j.optcom.2012.02.052.

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Yu, Xumin, Xiaohong Tang, Juan Wang, Dan Tang, and Xinyang He. "A KIND OF COAXIAL RESONATOR STRUCTURE WITH LOW MULTIPACTOR RISK." Progress In Electromagnetics Research Letters 39 (2013): 127–32. http://dx.doi.org/10.2528/pierl13032207.

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Kishk, Ahmed A. "A triangular dielectric resonator antenna excited by a coaxial probe." Microwave and Optical Technology Letters 30, no. 5 (2001): 340–41. http://dx.doi.org/10.1002/mop.1308.

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RAWAT, BANMALI, LOREN BEILKE, and REX MILLER. "Analysis of a coaxial resonator with linearly tapered inner conductor." International Journal of Electronics 71, no. 3 (September 1991): 471–84. http://dx.doi.org/10.1080/00207219108925493.

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Huang, Jie, Tao Wei, Tao Wang, Jun Fan, and Hai Xiao. "Control of critical coupling in a coiled coaxial cable resonator." Review of Scientific Instruments 85, no. 5 (May 2014): 054701. http://dx.doi.org/10.1063/1.4873325.

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