標題: A Compact Printed Filtering Antenna Using a Ground-Intruded Coupled Line Resonator
作者: Chuang, Chao-Tang
Chung, Shyh-Jong
傳播研究所
Institute of Communication Studies
關鍵字: Band-edge selectivity;bandpass filter;coupled line resonator;filtering antenna
公開日期: 1-十月-2011
摘要: A compact printed filtering antenna with high bandedge gain selectivity is presented. Occupying about the same substrate area as a conventional antenna, the proposed structure not only serves as a radiator but also a second-order bandpass filter, with one filter pole provided by a Gamma-shaped antenna and the other by a newly proposed coupled line resonator. High band-edge selectivity is achieved due to two additional stop-band transmission zeros provided by the coupled line resonator. To minimize the required area and reduce the spurious radiation, a coupled line structure composed of a microstrip line and a coplanar waveguide by broadside coupling is adopted and intruded into the Gamma-shaped antenna area. According to the filter specifications, a design procedure for the proposed filtering antenna is depicted in detail. One example at 2.45 GHz with a second-order Chebyshev bandpass filter of 0.1 dB equal-ripple response is tackled. As compared to the conventional Gamma-shaped antenna, the proposed filtering antenna not only possesses a similar antenna gain but also provides better bandedge gain selectivity and flat passband gain response. The measured results, including the S-parameters, total radiated power, and antenna gains versus frequency, have good agreement with the designed ones.
URI: http://dx.doi.org/10.1109/TAP.2011.2163777
http://hdl.handle.net/11536/14764
ISSN: 0018-926X
DOI: 10.1109/TAP.2011.2163777
期刊: IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
Volume: 59
Issue: 10
起始頁: 3630
結束頁: 3637
顯示於類別:期刊論文


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