同时减小尺寸和抑制杂散响应的微带SIR双模带通滤波器

2008 IEEE MTT-S International Microwave Workshop Series on Art of Miniaturizing RF and Microwave Passive Components Pub Date : 2008-12-01 DOI:10.1109/IMWS.2008.4782276

Wai‐Wa Choi, K. Tam

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引用次数: 6

摘要

提出了一种新型小型化微带双模带通滤波器，同时具有减小尺寸和抑制杂散响应的功能。在这种新的滤波器结构中，采用了阶跃阻抗谐振器(SIR)技术，不仅缩短了谐振器的尺寸，而且抑制了其杂散响应。设计了一种以1.6 GHz为中心、3% FBW的双模带通滤波器样机，并进行了实验表征。与传统结构相比，这种新型过滤器的尺寸减小了33%。此外，在2f0和3f0处的杂散响应分别被抑制了20 dB和18 dB。

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A Microstrip SIR Dual-Mode Bandpass Filter with Simultaneous Size Reduction and Spurious Responses Suppression

A novel miniaturized microstrip dual-mode bandpass filter with simultaneous size reduction and spurious responses suppression is proposed. In this new filter structure, the stepped-impedance resonator (SIR) technique is used to not only shorten the resonator size but also suppress its spurious responses. A prototype dual-mode bandpass filter centered at 1.6 GHz with 3% FBW is designed and experimentally characterized. This new filter achieves 33% size diminution when compared with the conventional structure. In addition, spurious responses at 2f0 and 3f0 are suppressed by 20 dB and 18 dB respectively.

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2008 IEEE MTT-S International Microwave Workshop Series on Art of Miniaturizing RF and Microwave Passive Components

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