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A high power digital tunable filter is presented. The filter uses high reverse bias voltage for PIN diode to ensure high handle power, and uses binary capacitor array to realize center frequency variation. The filter tuning range is from 30 MHz to 88MHz with a low insertion loss (better than 1.5 dB), high power (P1dB > 49 dBm) and fast tuning speed(less than 30 μS). There is a good agreement with...
A compact wideband microstrip bandpass filter using transversal resonator and asymmetrical interdigital coupled lines is proposed in this letter. A wide passband is first constructed using transversal signal-interference technique, resulting a pair of transmission zeros at each side of the desired passband. By driving this transversal resonator with two asymmetrical interdigital coupled lines at two...
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