Abstract
AbstractThis paper presents a balanced switchable bandpass filter (SBPF) with differential‐mode (DM) reflectionless characteristics in the on‐state. The proposed SBPF consists primarily of dual‐mode resonators loaded with p‐type–intrinsic–n‐type diodes, absorptive stubs, and common‐mode suppression (CMS) networks. The resonance conditions of the diode‐loaded dual‐mode resonator in both on/off states, as well as the design principles of the balanced SBPF's, are analyzed and derived. To verify the design concept, a balanced SBPF prototype with a center frequency of 2.6 GHz was designed and manufactured. The measured results show that the proposed SBPF exhibits low DM insertion loss and a wide DM reflectionless bandwidth in the on‐state, high DM isolation in the off‐state, and effective CMS.
Published Version
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