A low-cost modular flat-panel electronically scanned antenna

Abstract

The invention proposes a phased array design scheme, and especially proposes an effective method for low-cost and modularization of flat-panel phased array antennas. The method of the present invention mainly includes: based on an antenna unit with an integrated phase shifting function, 16 array elements are placed on a hexagonal aperture to form a sub-array in a sparse array layout, and the modularized sub-array is spliced Large scale arrays can be realized. The beneficial effect of the present invention is that the radiation phase of each antenna unit is directly controlled to realize the two functions of "radiation" and "phase shifting" of the antenna, which can effectively suppress the grating lobes of the spliced ​​array of non-overlapping uniform sub-arrays, and simultaneously omit The external phase shifter greatly reduces the processing cost; the sub-array rotation and array element rotation are used to achieve phase compensation, which can effectively reduce the quantization sidelobe level; the sub-array synthesis technology can split a large array into multiple A small module, easy to process, assemble and maintain.

Description

technical field [0001] The invention designs a field of phased array design, and especially proposes an effective method for the low-cost modular design of flat panel phased array antennas. Background technique [0002] The phased array antenna is a type of antenna developed from an array antenna. By controlling the phase of the antenna unit through a controllable electronic phase shifter connected to the rear of the antenna, the original direction can be aligned in a certain direction within a few microseconds. The lobe shifts and projects in the other direction. Since the 1960s, phased array antennas began to show a blowout. Since then, phased array technology has been rapidly improved under the research of various countries. Phased array panel antennas have the advantages of low profile, high gain, and flexible beams. With the development of 5G applications and Internet of Things technology, the demand for phased array antennas has increased. However, the biggest challe...

AI Technical Summary

Problems solved by technology

However, the biggest challenge faced by the traditional phased array antenna technology and application is that the cost of the antenna is too high, and it is difficult to widely promote it to the civilian field.

With the large occupation of low-frequency spectrum resources, the research direction has been shifted to higher frequency bands. However, since the control of each antenna unit requires a corresponding transceiver circuit, the circuit layout space is very limited.

Images