Microstrip open-stub linear high-temperature superconducting 9-pole low-pass filter

摘要

The present invention relates to a microstrip open stab line system high-temperature superconducting 9-pole low-pass filter, and the microwave properties superior single crystal substrate, and an input terminal for signal transmission provided on one side edge of the single crystal substrate, the single crystal substrate of the upper 5 microstrip open for signal transmission input terminal is sending signals are formed in the traveling direction perpendicular to the signal between the formed one side edge of said input end and an output end of the single crystal substrate and the signal transmission output stage formed on the opposite other side edge, the upper for A filter pattern formed of four microstrips formed so as to be perpendicular to each other between the stubs and the off-stub, and a ground plate formed at the bottom of the monocrystalline substrate.;Therefore, since the number of poles of the filter patterns increase the amplitude of the pulsating flow in the pass band decrease to within 0.02dB can improve the flatness of the pass band, and also, it is possible to sharply improve the stop band and the skirt characteristics in the stop band.