Compact Wideband Differential Bandpass Filter Using a Marchand Balun
نویسندگان
چکیده
A novel compact wideband differential bandpass filter with wideband common mode suppression using a Marchand balun is presented in this paper. Open/shorted coupled lines and stubs are used to improve the selectivity for the differential mode and common mode suppression. The demonstrated filter with a compact size of 50mm × 30mm exhibits a fractional bandwidth of 53% centered at 3.0GHz and 13 dB common-mode suppression from 0 to 9GHz. The theoretical and measured results agree well with each other and show good in-band performances.
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