紧凑的双带带通滤波器采用同心阶跃阻抗谐振器

2012 5th International Conference on Computers and Devices for Communication (CODEC) Pub Date : 2012-12-01 DOI:10.1109/CODEC.2012.6509289

M. Pal, Biswajit Sarkar, Pankaj Sarkar, R. Ghatak

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引用次数: 2

摘要

提出了一种适用于WLAN和WiMAX应用的双频带通滤波器。该滤波器采用同心U型阶跃阻抗谐振器和向内折叠开路短段谐振器实现。通带的中心频率为2.45 GHz和3.5 GHz。在第一通带和第二通带的插入损耗分别约为2db和1.5 dB。为了提高滤波器的选择性，引入了两个传输零点，一个在2.9 GHz时位于两个通带之间，另一个在4.4 GHz时位于第二个通带的视线范围内。过滤器的整体尺寸为14.9 mm × 18.9 mm。

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Compact dual-band bandpass filter using concentric stepped impedance resonator

A dual band bandpass filter for WLAN and WiMAX application is presented in this paper. The proposed filter is realized using concentric U shaped stepped impedance resonator and inward folded open stub resonator. The center frequencies of the pass band are 2.45 GHz and 3.5 GHz. The insertion loss is about 2 dB and 1.5 dB at first and second passband respectively. Two transmission zeros are introduced to improve the selectivity of the filter one is in between two pass band at 2.9 GHz and another is sight of the second passband at 4.4 GHz. The overall dimension of the filter is 14.9 mm by 18.9 mm.

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来源期刊

2012 5th International Conference on Computers and Devices for Communication (CODEC)

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