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Progress In Electromagnetics Research Letters
ISSN: 1937-6480
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A NOVEL COMPACT MICROSTRIP UWB BANDPASS FILTER WITH IMPROVED OUT-OF-BAND REJECTION

By Y.-Q. Liu and X.-Z. Ke

Full Article PDF (184 KB)

Abstract:
A new compact microstrip ultra-wideband (UWB) bandpass filter (BPF) with improved out-of-band rejection and good selectivity is proposed using a modified ring multiple-mode resonator (MMR). The initial UWB bandpass filter comprises interdigital coupled lines and a conventional ring MMR. Then, four high-low impedance resonant cells are periodically placed in the inner area of the conventional ring MMR, which have the properties of achieving harmonic suppression and size reduction. To validate the design theory, a new compact microstrip UWB BPF with improved out-of-band rejection is designed and fabricated. Both simulated and experimental results are provided with good agreement.

Citation:
Y.-Q. Liu and X.-Z. Ke, "A Novel Compact Microstrip UWB Bandpass Filter with Improved Out-of-Band Rejection," Progress In Electromagnetics Research Letters, Vol. 59, 21-25, 2016.
doi:10.2528/PIERL16011401

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