Wide-beam microstrip antenna based on hybrid loading

Abstract

The invention relates to the technical field of antennas, in particular to a wide-beam microstrip antenna based on hybrid loading, which is characterized by at least comprising a copper-clad dielectric substrate, a square microstrip patch, a metal split ring, umbrella-shaped monopoles and a circular floor, wherein the copper-clad dielectric substrate is a double-sided square copper-clad substrate,a copper-clad circular floor is arranged on one side of the double-sided square copper-clad substrate, the metal split ring is arranged on the other side of the double-sided square copper-clad substrate, a square microstrip patch is arranged in the center of the metal split ring, and a plurality of umbrella-shaped monopoles are arranged on the periphery of the square microstrip patch; the circular floor and the square microstrip patch are connected up and down through an antenna feed port; and the antenna feed port is connected with the microstrip patch through the coaxial probe. The invention provides a metal split ring and umbrella-shaped monopole hybrid loading method for a microstrip antenna, so as to change the aperture field distribution characteristic of the microstrip antenna, thereby enabling the microstrip antenna to achieve the wide-beam radiation characteristic.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to a wide-beam microstrip antenna based on mixed loading. Background technique [0002] The Beidou second-generation navigation system includes three working frequency bands: B1 (1561.098±2MHz), B2 (1207.14±10.23MHz) and B3 (1268.52±10.23MHz), and the polarization modes are all right-handed circular polarization. [0003] In the Beidou navigation system, if communication with multiple navigation satellites can be established at the same time, it will help improve the accuracy of navigation and positioning. For this reason, the navigation antenna is required to have good wide beam coverage performance. It is generally required that the half-power beamwidth of the antenna in the two orthogonal planes (E plane and H plane) be greater than 120°. [0004] At the same time, in order to improve the reliability of communication with navigation satellites, the Beidou navigation antenna sho...

AI Technical Summary

Problems solved by technology

Conventional microstrip antennas cannot meet the wide-angle coverage requirements of navigation systems. Therefore, how to expand the beamwidth of microstrip antennas has become a research hotspot and difficulty.

Images