X-BAND TRISECTION SUBSTRATE-INTEGRATED WAVEGUIDE QUASI-ELLIPTIC FILTER

作者：Ismail A^*; Razalli M S; Mahdi M A; Abdullah R S A R; Noordin N K; Rasid M F A

来源：Progress in Electromagnetics Research-Pier, 2008, 85: 133-145.

DOI：10.2528/PIER08081802

A narrowband trisection substrate-integrated waveguide elliptic filter with coplanar waveguide (CPW) input and output ports is proposed and demonstrated for X-band applications. The filter is formed by incorporating metallized vias in a substrate (RT/Duroid) to create cross-coupled waveguide resonators. The result is an attenuation pole of finite frequency on the high side of the passband, therefore exhibiting asymmetric frequency response. The fabricated trisection filter with a centre frequency of 10.05 GHz exhibits an insertion loss of 3.16 dB for 3% bandwidth and a return loss of -20 dB. The rejection is larger than 15 dB at 10.37 GHz.

• 出版日期2008