In portable telephone systems for mobile satellite and cellular radio communications, elliptic-function filters are used to achieve miniaturization of filters with low loss and high isolation characteristics. In this paper, we present a narrow line coupled elliptic-function filter which has planar stripline structure. A sub-resonator, named "F-form resonator" here, is proposed for the coupling between nonadjacent main resonators. By arranging the F-form resonator on a common dielectric substrate with the main resonators, we realize a minia-turized multi-pole stripline filter with the elliptic-function response. A design procedure is presented and validated by the performances of fabricated L-band filter and diplexer.
|出版ステータス||Published - 1998|
|イベント||1998 28th European Microwave Conference, EuMC 1998 - Amsterdam, Netherlands|
継続期間: 1998 10月 5 → 1998 10月 9
|Conference||1998 28th European Microwave Conference, EuMC 1998|
|Period||98/10/5 → 98/10/9|
ASJC Scopus subject areas
- コンピュータ ネットワークおよび通信