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Modified Compact Combline Filter Using Planar Parallel Coupled Structure with Extended Rejection Bandwidth

Kai Wang|강인호|Shang MIng Li
한국항해항만학회|2010.09|한국항해항만학회지 (Journal of Korean Navigation and Port Reserch)|제34권 제7호|pp. 543-552

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참고문헌

주제분류해상운송학

초록

Modified compact combline bandpass filters are proposed based on the miniaturized quarter-wave transmission line which is composed of the parallel coupled line and lumped capacitors. The electrical length of the parallel coupled line in a resonator, which determines the size of combline bandpass filters, is just 5°or 7°, resulting in a compact circuit area. The designed combline bandpass filter also has a wide upper stopband by suppressing the spurious passbands, not moving. Measured results of two fabricated filters centered at 400MHz show good agreement with the theoretical predications.

Abstract

Modified compact combline bandpass filters are proposed based on the miniaturized quarter-wave transmission line which is composed of the parallel coupled line and lumped capacitors. The electrical length of the parallel coupled line in a resonator, which determines the size of combline bandpass filters, is just 5°or 7°, resulting in a compact circuit area. The designed combline bandpass filter also has a wide upper stopband by suppressing the spurious passbands, not moving. Measured results of two fabricated filters centered at 400MHz show good agreement with the theoretical predications.

참고문헌 (29)

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