Patent ID: 6954124
Filing Date: 2005-10-11
Classification: H01P

Abstract:
1. A high-frequency circuit device comprising: at least a dielectric member which can create a resonant state of an electromagnetic wave; a support member which surrounds the dielectric member and has a lower dielectric constant than that of the dielectric member; a shielding conductor surrounding the member; at least a transmission line including a strip conductor disposed to face part of the dielectric member, an earth conductor layer disposed to face the strip conductor, and a transmission-line substrate interposed between the strip conductor and the earth conductor layer; and a coupling probe which is connected to the transmission line and has the input/output coupling function of input/output coupling with the dielectric member by an electromagnetic wave, wherein the dielectric member is excited in the TM characterized in that said at least a transmission line is a pair of transmission lines and the high-frequency circuit device functions as a bandpass filter; and characterized in that the end portion of the strip conductor is located on the transmission-line substrate and functions as the coupling probe.