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This paper presents a new type of absorptive bandstop filter (ABSF) design that is targeted for absorbing the local-oscillator-to-RF leakage of mixer in a heterodyne receiver. The proposed ABSF is designed to absorb the input power at its Port 1, and it is achieved by introducing one lossy resonator to a conventional narrowband coupled-line bandstop filter. Suitable equivalent circuit models and closed-form...
This paper presents a new application of absorptive bandstop filter for absorbing the LO-to-RF leakage of mixer in a Q-band heterodyne receiver. The proposed absorptive bandstop filter (ABSF) is achieved by introducing lossy quarter-wavelength resonator to a conventional narrowband bandstop filter. In order to facilitate the receiver system integration, the proposed ABSF is implemented in commercial...
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