Dual-band high-isolation wide-angle scanning composite aperture array plane antenna

Abstract

The invention discloses a dual-band high-isolation wide-angle scanning composite aperture array plane antenna. The antenna comprises a C-band planar printed oscillator antenna, a Ku-band open waveguide antenna, a C-band connector, a Ku-band connector and supporting foam, wherein the C-band planar printed oscillator antenna is a microstrip antenna, is printed on a single-layer microwave dielectricsubstrate and works in a horizontal polarization mode, a bottom end of the Ku-waveband open waveguide antenna is directly provided with a multistage wave converter, a working mode is vertical polarization, the C-band connector is a radio frequency short cable with impedance conversion, one end of the C-band connector is in the form of a welding pin and can be directly welded on the C-band antennaunit, the other end of the C-band connector can select different types of radio frequency connectors as required; different types of radio frequency connectors can be selected as required by the Ku waveband connector, the section height difference between the C-band planar printed oscillator antenna and the Ku-band open waveguide antenna is 1 / 4 lambda c or 3 / 4 lambda c, and the C-band planar printed oscillator antenna is supported through the supporting foam in the middle.

Description

technical field [0001] The invention relates to the field of antennas, in particular to a dual-band high-isolation wide-angle scanning composite aperture array antenna. Background technique [0002] With the development of new technologies and the application of new combat concepts, the development characteristics of future air strike weapons and air strike styles have undergone significant changes, and radars need to complete search, tracking, and command and guidance functions. In order to realize the different functions of the radar, different working frequency bands are usually selected to take into account the search requirements of high power and large airspace, as well as the requirements of high-precision, high-data rate tracking and guidance, and at the same time, superior low-altitude performance is required. At the same time, in order to improve system integration, small size and good adaptability, the development of single-sided dual-band common aperture rotating...

AI Technical Summary

Problems solved by technology

For example, the patent "a low-profile dual-frequency two-dimensional wide-angle scanning common-aperture phased array antenna", application number: CN110112573A, adopts the form of stripline and microstrip line, stacked back-feed structure and middle dielectric layer sequentially from bottom to top , the second middle metal copper clad layer, the upper dielectric layer and the upper metal copper clad layer, and the first metallized via hole and the second metallized via hole; the first metallized via hole runs through the second middle metal copper clad layer, the middle layer The dielectric layer and the backfeed structure together form a low-frequency antenna; the second metallized via hole corresponds to the first metallized via hole one by one, and the second metallized via hole passes through the first metallized via hole and penetrates the upper dielectric layer and the first metallized via hole. The upper metal-clad copper layer is connected together to form a high-frequency antenna. The dual-band common-aperture antenna array antenna usually adopts a multi-layer mixed-voltage microstrip antenna form, which has a complex feed network, high processing accuracy, and difficult to realize. high cost

And limited by the size of the microstrip antenna, the distance between the antenna elements is large, which cannot meet the large-angle scanning, and the low isolation cannot meet the electromagnetic compatibility requirements of the radar.

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