Multimode Composite Antenna

Abstract

The present invention provides a multi-mode composite antenna, comprising: four dielectric layers arranged sequentially from top to bottom, the first dielectric layer is provided with multiple groups of periodically arranged units, and each unit is provided with an A-band radiation patch , B-band radiation patches, same-layer coupling gaps, B-band feed pads, and feed holes; the second dielectric layer is provided with welding holes, hetero-layer coupling gaps, feed avoidance gaps, and shielding holes; the third dielectric layer is provided with There are welding holes, shielding holes, and B-band feed ports. The fourth dielectric layer is divided into upper surface copper clad layer and bottom copper clad layer; A-band radiation patch and B-band radiation patch share the same aperture. The polarizations of the two antennas may be the same linear polarization in the same direction, or two types of linear polarization in mutually perpendicular directions. The invention has a simple structure, and can be used not only for regularly arranged phased array antennas, but also for sparsely arranged phased array antennas, which solves the problem of the two antenna arrays being too large, and can simultaneously ensure the scanning performance of antennas in two frequency bands .

Description

technical field

[0001] The invention belongs to the technical field of microstrip dual-mode composite phased array antennas, and in particular relates to a common-aperture dual-mode composite microstrip antenna that can be used for phased array antennas. Background technique

[0002] With the rapid development of wireless communication technology, communication equipment is developing in the direction of miniaturization and integration. The performance of the antenna determines the performance of the entire system, so the research on the antenna is becoming more and more important, and the dual-mode common-aperture composite antenna is one of the key technologies in the research of the phased array antenna.

[0003] After the traditional microstrip antenna units are arrayed, there is only a single mode antenna in the entire antenna aperture, and its aperture utilization rate is relatively low. If two antennas with different frequency bands are used to form an array, two sep...

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