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A novel miniaturized microstrip dual-mode bandpass filter with simultaneous size reduction and spurious responses suppression is proposed. In this new filter structure, the stepped-impedance resonator (SIR) technique is used to not only shorten the resonator size but also suppress its spurious responses. A prototype dual-mode bandpass filter centered at 1.6 GHz with 3% FBW is designed and experimentally...
A novel compact microstrip dual-band bandpass filter based on transversal structure and centrally capacitive load is proposed. Take full advantage of the full-wavelength resonator and centrally capacitive load, two filter passbands can be designed independently whilst the transmission zero of transversal filtering is kept; and spurious at lower frequency is eliminated simultaneously. A dual-band prototype...
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