科研之友
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摘要
In this paper, a constant absolute bandwidth (CABW) band-pass filter based on magnetic dominated mixed coupling and source-load electric coupling is proposed. Specially, a novel mixed electric and magnetic coupling structure is presented to control the coupling coefficient variation and thus realize a narrow CABW width. Two transmission zeros are added to the filter response using a source-load coupling technique, leading to a better selectivity. The measurement shows that the -1 dB absolute and fractional bandwidth is 29 +/- 3 MHz and 1.8-2.6%, respectively, while the central frequency of the passband varies from 1.11 to 1.51 GHz.
- 出版日期2016
- 单位西南交通大学
