Summary

International Symposium on Antennas and Propagation

2015

Session Number:S3.11

Session:

Number:S3.11.5

An Efficient Design Method of Microstrip Filtering Antenna Suitable for Circuit Synthesis Theory of Microwave Bandpass Filters

Masataka Ohira,  Zhewang Ma,  

pp.-

Publication Date:2015/11/9

Online ISSN:2188-5079

DOI:10.34385/proc.37.S3.11.5

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Summary:
This paper proposes an efficient design method of filtering antennas, enabling to apply a well-established filter design theory to the antenna design. In the design of filtering antenna, an external Q factor at input port, coupling coefficients, and a radiation Q factor of antenna need to be evaluated. However, conventional design methods have a time-consuming procedure, since a time domain response from the overall structure is required for the evaluation of coupling coefficient between resonator and antenna. For an efficient design, we propose a parameter extraction technique using only amplitude property of input reflection responses for the evaluation of both the coupling coefficient and the radiation Q factor. As an example, a third-order filtering antenna is synthesized, designed, and tested, which numerically and experimentally validates the effectiveness of the proposed design method.