Miniature Microstrip Bandpass Filters Based on Capacitive Loaded Coupled-Lines and Lumped-Element K-Inverters(<Special Section>Recent Technologies for Microwave and Millimeter-wave Passive Devices)

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概要

• 論文の詳細を見る

• This study presents a class of miniature parallel-coupled bandpass filters with good selectivity and stopband rejection. Capacitive terminations are introduced to the conventional anti-parallel coupled-lines, and lumped-element K-inverters are employed, to achieve both size reduction and spurious suppression. Additionally, the capacitive cross-coupling effect can be introduced to obtain three transmission zeros to enhance the selectivity. Suitable equivalent-circuit models, along with design formulae, are also established. Specifically, via design examples, this work demonstrates the feasibility of proposed filter structures in microstrip configuration. Compared to the conventional parallel-coupled filters, the proposed filters exhibit over 60% size reduction, improved selectivity, and wider stopbands up to four times the center frequency.

• 社団法人電子情報通信学会の論文
• 2007-12-01

著者

• Lin Yo-shen

  Department Of Electrical Engineering National Central University

• CHENG Chien-Chun

  Graduate Institute of Communication Engineering, National Taiwan University

• Cheng Chien-chun

  Graduate Institute Of Communication Engineering National Taiwan University:(present Office)high Tech

関連論文

• Miniature Microstrip Bandpass Filters Based on Capacitive Loaded Coupled-Lines and Lumped-Element K-Inverters(Recent Technologies for Microwave and Millimeter-wave Passive Devices)

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