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Spurious Suppression of a Parallel Coupled Microstrip Bandpass Filter with Simple Ring EBG Cells on the Middle Layer
Hung-Wei WU Min-Hang WENG Yan-Kuin SU Ru-Yuan YANG Cheng-Yuan HUNG
Publication
IEICE TRANSACTIONS on Electronics
Vol.E89-C
No.4
pp.568-570 Publication Date: 2006/04/01 Online ISSN: 1745-1353
DOI: 10.1093/ietele/e89-c.4.568 Print ISSN: 0916-8516 Type of Manuscript: LETTER Category: Microwaves, Millimeter-Waves Keyword: electromagnetic bandgap (EBG), bandpass filter (BPF), spurious, suppression,
Full Text: PDF(341.7KB)>>
Summary:
This paper proposes a parallel coupled microstrip bandpass filter (BPF) with ring Electromagnetic Bandgap (EBG) cells on the middle layer for spurious suppression. The ring EBG cells of the middle layer add a good stopband-rejection mode to the second harmonics of the parallel coupled microstrip BPF with suppression of over -50 dB, without affecting the center frequency and insertion loss of the original designed BPF. The design of ring EBG cells is presented and verified by the experimented results.
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