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首页> 外文期刊>International Journal of Microwave and Wireless Technologies >Wideband suppression of spurious response for microstrip filters based on coupled lines of incommensurate lengths
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Wideband suppression of spurious response for microstrip filters based on coupled lines of incommensurate lengths

机译：基于长度不等的耦合线的微带滤波器寄生响应的宽带抑制

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摘要

This work demonstrates design methods that can achieve remarkable enhancement in the stopband response of microstrip coupled-line filters. The frequencies of resonance and/or the transmission zeros of a coupled-line section can be controlled by its length. Therefore, by constructing a filter with coupled lines of incommensurate lengths such that these frequencies do not overlap, substantial improvement in the stopband response can be obtained. Besides its compact structure and simple design procedure, an unprecedented performance is demonstrated experimentally in which the transmission level is maintained below -20 dB up to as high as 11.9 f(0) for a third-order filter, where f(0) is the center frequency.
机译：这项工作演示了可以显着增强微带耦合线滤波器的阻带响应的设计方法。耦合段的谐振频率和/或传输零点可以通过其长度来控制。因此，通过用长度不相称的耦合线构成一个滤波器，使得这些频率不重叠，可以得到阻带响应的实质性改善。除了其紧凑的结构和简单的设计程序外，还通过实验证明了前所未有的性能，其中对于三阶滤波器，传输电平保持在-20 dB以下，高达11.9 f（0），其中f（0）是中心频率。

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