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Compact Low-Pass Filter with Sharp Skirt Characteristics and Broad Stopband
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 Title & Authors
Compact Low-Pass Filter with Sharp Skirt Characteristics and Broad Stopband
Li, Rui; Kim, Dong-Il; Choi, Chang-Mook;
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A new compact microstrip low-pass filter and its equivalent-circuit model are developed. The philosophy of the structure behind this novel microstrip low-pass filter is simple as it is composed of a pair of symmetrical parallel coupled-line and an open-stub. With this configuration, a finite attenuation pole near the stopband cutoff frequency is available and adjustable by simply tuning the circuit parameters. Furthermore, the rejection bandwidth of this type of low-pass filter can be extended. In order to validate the feasibility of the proposed design method, a low-pass filter based on a microstrip structure is designed, fabricated, and measured. Experimental results agree very well with the simulation and analytical results.
Finite attenuation pole;Low-pass filter;Microstrip structure;Symmetrical parallel coupled-line;
 Cited by
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