A new H-slot coupled microstrip filter-antenna for modern wireless communication systems

Abstract

This article describes a new H-slot coupled microstrip filter-antenna. In the antenna design, these microstrip lines are used to feed H-shaped coupling slots on the grounded metal plane. The H-shaped coupling slots feed top radiating patches, which can realize the radiation function of the antenna. The bilateral power divider is connected with the microstrip line, and realize the filtering function. The antenna has a bandwidth of 0.78 GHz from 3.02 to 3.8 GHz. In the frequency band of 3.4 to 3.6 GHz, the average gain in the direction perpendicular to the antenna plane has exceeded 11 dBi.