SIGNAL TRANSMISSION APPARATUS HAVING LOADED THREE-BRANCH COUPLED MICRO-STRIP LINE STRUCTURE

摘要

Provided is a signal transmission apparatus having a loaded three-branch coupled micro-strip line structure. The signal transmission apparatus comprises a filter, a voltage-controlled oscillator and a transmission antenna, wherein the filter comprises two signal transmission ends arranged on a surface of a dielectric plate; an output end of the voltage-controlled oscillator is connected to one signal transmission end of the filter; and the other output end of the filter is connected to the transmission antenna. The signal transmission apparatus in the present invention can realize a wide relative bandwidth and a high selectivity for a passband signal, thereby introducing less noise and avoiding interference at a radio-frequency front end.