Integrated millimeter wave active phased-array antenna

Abstract

The invention provides an integrated millimeter wave active phased-array antenna. The integrated millimeter wave active phased-array antenna is reliable in performance, ensures that the number of chips can be reduced, and reduces cost. According to the technical scheme, an antenna bearing layer is integrally connected to a feed network through an antenna array surface and a TR assembly; micro-strip patches of the antenna array surface are arranged below the antenna bearing layer according to a rectangular grid array and are connected with power amplifier chips of the TR assembly according to a 8*8 array scale, and every four power amplifier chips are connected with a four-channel integrated phase shifter to constitute a 2*2 sub-array circuit to be integrally connected with the feed network downwards; a radio frequency signal is input to a power dividing network through the feed network and is disseminated into four paths of radio frequency signals through a plurality of four-channel integrated phase shifters, and the radio frequency signals are input into corresponding power amplifier chips, are transmitted to the micro-strip patches and are transmitted; sixteen four-channel integrated phase shifters and sixty-four power amplifier chips are controlled by control signals through a low-frequency signal network to finish radio frequency signal space power synthesis and beam scanning.

Description

technical field [0001] The invention relates to an array antenna and millimeter wave active phased array antenna technology. Background technique [0002] In recent years, with the rapid development of mobile communication services, the rapid progress of millimeter-wave monolithic integrated circuits and high-speed digital processing chips has made the application of high-density integrated millimeter-wave active phased array antennas possible. With the wide application of my country's on-orbit satellite systems and communication data links, airborne, missile-borne, rocket-borne and other platforms have higher and higher requirements for the transmission rate and installation space of phased array antennas, and phased array antennas are required to have high gain, volume Requirements such as small size, light weight, flexible beam scanning, and wide coverage make the application of millimeter-wave active phased array antennas very urgent. [0003] The high development of mil...

AI Technical Summary

Problems solved by technology

The disadvantage of this solution is that each channel of the TR component uses a phase shifter alone, resulting in a large number of chips and high and low frequency interconnection lines, which cannot achieve low-cost and reliable design

Its disadvantage is that the tile-type active phased array antenna does not consider thermal design, and the designed single-channel output power is small, which is not suitable for millimeter-wave active phased array antenna design with single-channel output power greater than 50mw

The structural load-bearing function is not considered in the design of the antenna structure, and a millimeter-wave active phased array antenna that is highly integrated with the system platform structure and directly bears environmental loads cannot be formed

[0007] In general, the traditional millimeter-wave active phased array antenna does not integrate the antenna bearing layer, antenna array, TR components, and feed network, and cannot form a structure that is highly integrated with the system platform structure and directly carries environmental loads. Millimeter wave active phased array antenna

In addition, the traditional millimeter-wave active phased array antenna is designed with a single-channel phase shifter chip or DBF technology. It is difficult to complete a high-density integrated millimeter-wave active phase array without a multi-channel integrated phase shifter chip solution. Integrated Design of Controlled Array Antenna

Therefore, for the millimeter-wave active phased array antenna, how to make the phased array antenna have a load-bearing function in the structural design, realize the integration of structure and function in the circuit design, and ensure the long-term and reliable operation of the millimeter-wave active phased array antenna. work, there is no confirmed technical solution yet

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