Switchable microstrip bandpass filters with reconfigurable frequency responses

摘要

Two switchable microstrip bandpass filters with reconfigurable on-state frequency responses are proposed. The filters consist of a two-pole bandpass filter and switchable delay lines. The proposed filters feature not only switch abilities with a high on-off ratio but also two on-state frequency responses: Chebyshev and quasi-elliptic-function responses. Experiments were carried out to validate the design concept, and the simulation agrees well with the measurement.