Compact dual-band microstrip bandpass filter without external feeds
Compact dual-band microstrip bandpass filter without external feeds
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DOI：
10.1109/lmwc.2005.856687
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发表时间：
2005-10-01
影响因子：
3
通讯作者：
Zhu, L
中科院分区：
文献类型：
--
作者：
Sun, S;Zhu, L
A compact dual-band microstrip bandpass filter is proposed and designed to operate at 2.4 and 5.2 GHz without needing any external impedance-matching block. The modified half-wavelength stepped-impedance resonator with sinuous configuration is constructed to simultaneously excite the dual resonances at these two specified frequencies with miniaturized overall size. The parallel-coupled microstrip line is properly characterized to minimize the return losses within both dual pass-bands. The optimized results exhibit the good dual-band filtering performances with return losses higher than 20 dB as well being confirmed by experimentation with a fabricated filter circuit.
