采用螺旋谐振腔的新型微型化宽阻带带通滤波器

2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO) Pub Date : 2013-12-01 DOI:10.1109/IMWS-BIO.2013.6756210

Li Gao, Xiu Yin Zhang

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引用次数: 1

摘要

本文介绍了一种具有宽阻带的小型化带通滤波器。它利用两个螺旋四分之一波长谐振器缩小尺寸。通过在馈电结构中增加额外的线路，可以实现谐波频率的失配，并获得宽阻带。为了验证所提出的思想，实现了一个实验滤波器。测量结果表明，在阻带内达到了优于25 dB的抑制水平，抑制强度高达6.8f0。滤波器的电路面积仅为0.1λg×0.1λg，其中λg为工作频率为1ghz时的导频波长。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Novel miniaturized bandpass filter with wide stopband using spiral resonator

A miniaturized bandpass filter with wide stopband is presented in this letter. It utilizes two spiral quarter-wavelength resonators for size reduction. By adding extra lines to the feeding structure, mismatching at harmonic frequencies can be realized and wide stopband can be obtained. To verify the proposed idea, an experimental filter is implemented. The measured results show that better than 25 dB rejection levels in the stopband up to 6.8f₀ are achieved. The circuit area of the filter is only 0.1λ_g×0.1λ_g, where λ_g is the guided wavelength at the operating frequency of 1 GHz.

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2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO)

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