Microstrip band pass filter using end-coupled SIRs

摘要

invention microstrip band pass filter (band pass filter) to be about. In particular, to a microstrip band pass filter using a terminal that can be used in combination with SIR millimeter-wave band. ; as a technical means for achieving the above object, a first aspect of the invention is a dielectric substrate , conductive plate located on the lower surface of the dielectric substrate, and located on the upper surface of the dielectric substrate, the conductor, and the end coupled to the input terminal by a gap, providing a microstrip band pass filter comprising a plurality of SIR and the output terminal. ; microstrip bandpass filter according to the present invention, the damping characteristics good, and had have a narrow band characteristics, and less sensitive to errors during manufacture, the width adjustment of the transmission line of the SIR only by the low impedance of the filter characteristic The advantage is that the frequency shift can be fine without distortion.