RF LOW PASS FILTER FOR RADIO FREQUENCY SIGNAL

摘要

According to the present invention, in a low-pass filter for an RF signal constituted by a high-impedance transmission line and a low-impedance transmission line, an inclined surface is formed at an edge portion of the low-impedance transmission line to increase the fringing capacitance, The inductance of the series inductors generated in combination with the inductance of the series inductors of the high impedance transmission line increases the total series inductance so that the suppression characteristics of the adjacent bands are the same so that the length of the coaxial cable can be reduced.