High-integration and low-cost active phased array radar radio frequency front end

A phased array radar and radio frequency front-end technology, applied in the field of phased array radar, can solve the problems of increasing the cost of the radar system, the array scale, the complex system structure, the difficulty in controlling the volume, weight, and power consumption, etc. The effect of reducing machining complexity, volume and weight

Active Publication Date: 2019-10-11
NANJING UNIV OF SCI & TECH +1
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  • Abstract
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Problems solved by technology

[0003] In the RF front-end system of traditional active phased array radar, modules such as antennas and transceiver components are structurally self-contained and separated, and are electrically connected through interconnecting devices such as cables and connectors, resulting in a complicated system structure. It is difficult to control the size, weight, and power consumption, and the cost of the radar system also increases sharply with the increase of the array size

Method used

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  • High-integration and low-cost active phased array radar radio frequency front end

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Embodiment

[0019] This embodiment provides a high-integration, low-cost active phased array radar radio frequency front-end, which is realized by a single printed circuit board. refer to figure 1 , the entire radio frequency front end includes an antenna array 1 , a transceiver component 2 , a down converter 3 , a correction network 4 and a digital control module 5 . The whole board integrates the functions of large signal transmission, small signal reception, digital phase shifting and power management.

[0020] Antenna array 1 is composed of printed antennas, and an aluminum antenna reflector is installed at the rear end of the array to reflect and gather antenna signals and block and shield electromagnetic waves in the opposite direction.

[0021] The transceiver component 2 is composed of multiple transceiver channels, a power splitter and a public branch. Each transceiver channel includes a transmitting branch, a receiving branch, two electronic switches and a digital phase shifte...

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Abstract

The invention discloses a high-integration and low-cost active phased array radar radio frequency front end. A single microwave multilayer printed board is used as a carrier, and an array antenna, a transceiving component, a down converter, a correction network and a digital control module are simultaneously integrated on a board card, wherein the array antenna is used for receiving and transmitting radio frequency signals, the transceiving component is used for amplifying, shifting and attenuating the transceiving radio frequency signals and switching the transceiving and correction modes, the down converter is used for down-converting and receiving of echo signals, the correction network is used for correcting phase errors of each transceiving channel, and the digital control module is used for finishing the control of amplifiers, switches and phase shifters at all levels in the system. The integrated design scheme is adopted, the structure is simple, the size and the weight of the active phased array radar radio frequency front end are effectively reduced, and the system cost is reduced.

Description

technical field [0001] The invention relates to the technical field of phased array radar, in particular to a high-integration, low-cost active phased array radar radio frequency front end. Background technique [0002] Compared with traditional mechanical scanning radar, phased array radar can change the beam direction to scan, and has the advantages of flexible beam pointing, high data rate, large target capacity and strong anti-interference ability. Phased array radar can be divided into passive phased array radar and active phased array radar. Technical performance and better development prospects are important trends in the development of phased array radar technology in the future. [0003] In the RF front-end system of traditional active phased array radar, modules such as antennas and transceiver components are structurally self-contained and separate, and are electrically connected through interconnecting devices such as cables and connectors, resulting in a compli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/03
CPCG01S7/03Y02A90/10
Inventor 顾红张利强孙望杨建超陆星宇虞文超
Owner NANJING UNIV OF SCI & TECH
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