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Active phased array antenna radio frequency link system and method thereof for determining transmit-receive isolation

A phased array antenna and radio frequency link technology, applied in the direction of antennas, electrical components, etc., can solve problems such as undetermined technical solutions

Active Publication Date: 2015-10-21
10TH RES INST OF CETC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] In general, how to realize the analysis of the transceiver isolation of the full-duplex active phased array antenna RF link system, and how to determine the isolation index of the receiving and blocking filter and the transmitting and blocking filter, there is no definite technical solution yet.

Method used

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  • Active phased array antenna radio frequency link system and method thereof for determining transmit-receive isolation
  • Active phased array antenna radio frequency link system and method thereof for determining transmit-receive isolation
  • Active phased array antenna radio frequency link system and method thereof for determining transmit-receive isolation

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Embodiment Construction

[0023] refer to figure 1 . In the embodiments described below, the full-duplex active phased array antenna radio frequency link system includes a transmitting phased array system radio frequency link and a receiving phased array system radio frequency link. Wherein the RF link of the transmitting phased array system is sequentially connected in parallel between the transmitting antenna array 1 and the one-M power divider 5 by the M×N road, the receiving and resisting filter 2, the power amplifier 3, the phase shifter 4, and The drive power amplifier 6 that N roads are connected in parallel between one-point M power divider 5 and one-point N power divider 7 forms; The array size of the phased array is M×N; each radio frequency channel of the one-point-N power divider 7 with a transmitting port is provided with a driving power amplifier 6, and the purpose is to transmit the power amplifier 3 of the radio frequency link of the phased array system The output power is pushed to s...

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Abstract

The invention provides a full-duplex active phased array antenna radio frequency link system and a method for determining transmit-receive isolation. An emission phased array system radio frequency link is composed of an emission antenna array plane, a resistance receiving filter, a power amplifier, a phase shifter, a one-to-M power divider, a driving power amplifier and a one-to-N power divider. A receiving phased array system radio frequency link is composed of a receiving antenna array plane, a resistance sending filter, a lower-noise amplifier, a phase shifter, a P-to-one synthesizer, a driving low-noise amplifier and a Q-to-one synthesizer. The method comprises the steps of: firstly extracting voltage scattering vectors, then calculating the power coupled to the receiving phased array system radio frequency link, and determining the isolation of the resistance sending filter; in addition, calculating total heat noises coupled from the emission phased array system radio frequency link to the receiving antenna array plane, and determining the isolation of the resistance receiving filter. The full-duplex active phased array antenna radio frequency link system and the method for determining the transmit-receive isolation solve the problems in the prior art that the isolation is designed according to design experience, the design balance is large, and the design difficulties of the resistance receiving filter and the resistance sending filter are increased.

Description

technical field [0001] The invention relates to a method for calculating the transceiver isolation degree of a full-duplex active phased array antenna used in communication, radar and other electronic systems. Background technique [0002] Active phased array antennas are the main antenna approach for many radars and communications today. For a full-duplex active phased array antenna, the transceiver isolation is an important index when the active phased array antenna works. If the transceiver isolation of the full-duplex active phased array antenna is not well resolved, the receiving channel of the active phased array antenna will not work normally during transmission, and even the active chip of the receiving channel will be burned, causing heavy losses. Since the FM continuous wave radar emits continuous waves, it is not possible to use an electric switch to control the transmission and reception conversion of the antenna like pulse radar, but must separate the transmitt...

Claims

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Application Information

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IPC IPC(8): H01Q23/00
Inventor 何庆强
Owner 10TH RES INST OF CETC
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