A device and method for real-time calibration of transmission phase based on four-element directional antenna

A technology for directional antennas and calibration devices, applied to antennas, antenna arrays, electrical components, etc., can solve problems such as system failure, port transmission phase deviation, and beam pointing errors

Active Publication Date: 2011-12-14
中航空管系统装备有限公司
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Problems solved by technology

[0003] The 4 antenna ports are connected with 4 cables. Due to the cable length error and system error, the trans...

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  • A device and method for real-time calibration of transmission phase based on four-element directional antenna
  • A device and method for real-time calibration of transmission phase based on four-element directional antenna
  • A device and method for real-time calibration of transmission phase based on four-element directional antenna

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Embodiment Construction

[0033] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0034] see figure 1 , the transmit phase real-time calibration device based on the four-element directional antenna provided by the present invention, it structurally includes a power divider, four transmit channels, four transceiver switches, four receive channels, a matrix switch and a phase comparator .

[0035] Among them, the power divider divides the calibration source signal into four calibration signals, and sends them to four transmission channels respectively, and the four transmission channels are respectively connected to four transceiver switches, and the four transceiver switches are respectively connected to the four-unit directional antenna , while the four transceiver switches are respectively connected to the matrix switch thr...

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Abstract

The invention discloses a launch phase real-time calibrating device and a method based on four unit directional antennas. Calibrating source signals are divided into four ways of calibrating signals by a power divider in the device; the calibrating signals are respectively sent to four launch channels; the four launch channels are respectively connected with four transmit-receive switches correspondingly; the four transmit-receive switches are respectively connected to the four unit directional antennas; simultaneously the four transmit-receive switches are respectively connected with a matrix switch through four receiving channels; and the matrix switch is connected with a phase comparator. The method is characterized in that through launching the calibrating source signals by two channels, receiving the calibrating signals by two channels, and comparing the phase difference of two ways of received signals, the phase relationship between two launch channels is obtained. The device and method provided by the invention can be widely used for a system which has real-time calibrating requirements from each port phase in wave beam formation, such as an airborne collision avoidance system and an antenna system with symmetrical property, and the system has the advantages of obvious market prospect and economic benefits.

Description

technical field [0001] The invention relates to antenna and cable transmission phase calibration technology, in particular to a real-time calibration device and a corresponding calibration method based on a four-unit directional antenna transmission phase. Background technique [0002] A TCAS directional antenna generally consists of four omnidirectional antenna elements. The TCAS system forms four directional beams with a beam width slightly greater than 90 degrees by adding corresponding transmit phases to the four antenna ports, and divides the space into four blocks to meet its system requirements. [0003] The 4 antenna ports are connected to 4 cables. Due to cable length errors and system errors, the transmission phase of each port will deviate, resulting in wrong beam pointing and the system cannot work normally. At this time, the system error needs to be corrected. [0004] Furthermore, when the antenna cable is replaced, temperature, time, cable damage, etc., all ...

Claims

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Application Information

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IPC IPC(8): H01Q21/00H01Q3/30
Inventor 张海辉毛继志沈凯虹张俊强吴鑫伟
Owner 中航空管系统装备有限公司
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