Circular Polarization Antenna-Filter
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Abstract
A two-function filtering antenna device in the 1-2 GHz band is investigated. The device radiates or receives electromagnetic waves of circular polarization and simultaneously performs the function of a second-order bandpass filter. The considered design consists of a dual-mode printed antenna-resonator coupled with two non-radiating resonators which are fed by a quadrature balanced power divider. Using the model in the form of an equivalent circuit the main features of the structure synthesis and its tuning are analyzed including potentially achievable characteristics. The results of the numerical simulations using electromagnetic software are presented in comparison with the experimental characteristics for the prototype made of high-permittivity high-quality ceramics. It is found that the proposed design is characterized by an almost two-fold increase of the operating frequency band compared to the resonant antenna itself while maintaining a low level of cross-polarization within the passband. It is also shown that the design has the frequency response of the second-order bandpass filter.
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References
L. J. Chu, Physical limitations of omnidirectional antennas, Journal of Applied Physics 19 (1948), pp.1163-1175.
G. Mattaei, L. Young and E.M.T. Jones, Microwave Filters, Impedance-Matching Networks, and Coupling Structures, Artech House, Narwood, 1980.
J. Zuo, X. Chen, G. Han, L. Li, and W. Zhang, An Integrated Approach to RF Antenna-Filter Co-Design, IEEE Antennas Wireless Propag Lett 8 (2009), pp.141-144.
J. Jadhav, P. Deore, Filtering antenna with radiation and filtering functions for wireless applications, Journal of Electrical Systems and Information Technology 4 (2017), pp.125-134.
S. Chen, Y. Zhao, M. Peng and Y. Wang, A Codesigned compact dual-band filtering antenna with PIN loaded for WLAN applications, International Journal of Antennas and Propag., (2014).
M. Sabran, S. Rahim, C. Leow, P. Soh, B. Chew, and G. Vandenbosch, Compact circularly polarized truncated square ring slot antenna with suppressed higher resonances, PLOS ONE 2 (2017).
M.K. Alkhafaji, R.K.Z. Sahbudin, A.B. Ismail and S.J. Hashim, Design of a selective filter-antenna with low insertion loss and high suppression stopband for WiMAX applications, International Journal of Sensor Networks and Data Communications, 2016.
W. J. Wu, Y. Z. Yin, J. J. Xie, X. S. Ren, S. L. Zuo, Low-cost microstrip antenna with a monopole-like radiation pattern for RF front end, Microwave Opt. Technol. Lett. 54 (2012), pp.1810-1814.
W. J. Wu, Y. Z. Yin, S. L. Zuo, Z.Y. Zhang, and J. J. Xie, A new compact filter-antenna for modern wireless communication systems, IEEE Antennas Wireless Propag. Lett. 10 (2011), pp.1131-1134.
M. Qu, M. Li, L. Yao, M. Rao, S. Li, L. Deng, A novel circularly polarized filtering antenna with high out-of-band radiation rejection level, Microwave Opt. Technol. Lett. 60 (2018), pp.134-140.
US patent 8,836,596 B2, Sep. 16, 2014.
RF patent 2448396, Apr. 20, 2012.
K. L. Wong, Compact and Broadband Microstrip Antennas, John Wiley & Sons Inc., New York, 2002.