Microstrip Lowpass Filters with Reduced Size and Improved Stopband Characteristics
نویسندگان
چکیده
Novel microstrip lowpass filters are developed with reduced size and significantly improved stopband characteristics. After introducing quarter-wavelength open stubs, we get one or two transmission zeros in the stopband. By folding the high impedance microstrip lines, we reduce the size of the filter. Three-pole and five-pole lowpass filters are designed, and their measured frequency responses agree well with theoretical predictions. key words: lowpass filters, microstrip lines, open stubs, steppedimpedance, transmission zeros
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ورودعنوان ژورنال:
- IEICE Transactions
دوره 88-C شماره
صفحات -
تاریخ انتشار 2005