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CHANGSHA Jinwei

Changsha Jinwei "Sea Lion 1" Beidou 3 anti-interference chip AJM2020

The AJM array anti-interference processing chip supports multi-channel anti-interference processing of RNSS B1 and B3 frequency signals, RDSS downlink S frequency signals and global short message downlink B2b frequency signals. It is used in anti-interference array antennas and has functions such as interference monitoring, interference suppression, digital down-conversion, and digital up-conversion. The output digital intermediate frequency signal can be processed in the navigation baseband. This product supports withering anti-interference working mode and beam pointing working mode. In beam pointing working mode, it supports no less than 12 beams; it supports anti-suppression interference function in beam pointing working mode; it can be configured to support B1, B3, S, B2b Single-frequency point anti-interference mode supports a maximum number of antenna array elements of no less than 7; it can handle interference patterns, typical patterns such as broadband, pulse, narrowband, frequency sweep, and combinations of the above patterns; it has the ability to perceive the interference environment and can output interference Source wave direction, interference power, interference number and other information

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Merchant qualification:

Changsha Jinwei Information Technology Co., Ltd. was established in 2013. With high-precision, high-sensitivity, high-dynamic, and high-performance baseband radio frequency integrated satellite navigation and positioning chips as the core, it comprehensively provides multi-source integrated navigation and positioning modules and integrated application products. and full-chip solutions

Product Introduction&Application Fields

product details

  • Sampling rate: 62Mbps~124Mbps, configurable

  • Number of beams: supports up to 18 beam information outputs

  • It can output the direction of the interference source, interference power, number of interferences, etc.: the direction of the interference source is better than 10°, the interference power is better than 5dB; the maximum number of interferences is 6

  • Number of interferences that can be processed: In the case of a 7-element antenna array, 6 broadband interferences and at least 1 narrowband interference can be suppressed simultaneously

  • B1 frequency anti-interference (7 array elements): single interference to interference signal ratio 100dB, six interference interferent to signal ratio 80dB

  • B3 frequency anti-interference (7 array elements): single interference to interference signal ratio 100dB, six interference interferent to signal ratio 80dB

  • B2b frequency anti-interference (7 array elements): single interference to interference signal ratio 100dB, six interference interferent to signal ratio 80dB

  • S frequency anti-interference (7 array elements): single interference to interference signal ratio 80dB, six interference interferent to signal ratio 60dB

  • Equipped with UART, I2C, SPI, GPIO and other interfaces

  • Size: 19mm×19mm 

Product specifications

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