LTCC lamination double-fed circularly polarized micro-strip paster antenna

Abstract

The invention relates to an LTCC lamination double-fed circularly polarized micro-strip paster antenna, which belongs to the technical field of antennae and particularly relates to a micro-strip paster antenna with a low section. The antenna comprises two layers of radiation metal pasters, a grounding metal layer and a feed layer, wherein the four functional layers are spaced by three layers of medium LTCC ceramic dielectric substrates, and the feed layer consists of a Wilkins-layer power divider and a 90-degree phase shift micro-strip line. The geometric centers of the two layers of radiation metal pasters and the grounding metal layer are connected with each other by metal grounding pins, and the double-fed points with 90-degree phase difference on the feed layer are connected with the upper layer of radiation metal paster via metal feed pins. Two edges of each of the two layers of radiation metal pasters are respectively provided with two rectangular frequency modulation electrodes. The invention not only can better give consideration to the performance requirements of low section, broadband and circular polarization of the micro-strip antenna, but also can appropriately regulate the frequency band of the antenna conveniently.

Description

technical field [0001] The invention belongs to the technical field of antennas, and in particular relates to a low-profile microstrip patch antenna. Background technique [0002] Microstrip patch antenna has many advantages such as small size, light weight, thin profile, easy conformal, etc. It is widely used in satellite positioning, wireless communication, remote sensing, aerospace and other fields. In airborne or missile-borne applications, the performance requirements of microstrip patch antennas are particularly emphasized for their low profile, wide frequency band and circular polarization. However, the input impedance of the microstrip patch antenna is very sensitive to changes with frequency, resulting in a narrow impedance bandwidth. The current microstrip patch antennas generally use organic dielectric materials or ceramic materials as substrates. In order to expand the bandwidth of microstrip patch antennas, common methods include increasing the thickness of the...

AI Technical Summary

Problems solved by technology

Although this method is more convenient to implement, the circular polarization effect of the antenna is not very good, the antenna axis ratio parameter is high, and the dimensional accuracy of the chip cutting angle is very high.

Images