Title:
APPARATUS AND METHOD FOR SELF-ADAPTIVELY CANCELLING PASSIVE INTERMODULATION SIGNAL
Document Type and Number:
WIPO Patent Application WO/2020/113927
Kind Code:
A1
Abstract:
Disclosed is an apparatus for self-adaptively cancelling a passive intermodulation signal. One main path port of a coupler is connected to the antenna port of a duplexer, the other main path port is connected to the antenna feeder component on an antenna link, and the coupling port of the coupler is electrically connected to the radio frequency port of a canceller circuit; the input end of a passive intermodulation detection circuit is electrically connected to the receiving port of the duplexer, and the output end of the passive intermodulation detection circuit is electrically connected to the input end of a digital processing unit; the digital processing unit is electrically connected to a transmitting circuit unit by means of a transmitted signal frequency-discriminating circuit, and the output end of the digital processing unit is electrically connected to the input ends of the passive intermodulation detection circuit, of the transmitting circuit unit, and of the canceler circuit separately; the output end of the transmitting circuit unit is electrically connected to the input end of the duplexer. The present invention can cancel the component, falling within a receiving frequency band, of the passive intermodulation signal generated by a wireless transceiver device and other devices or components on the link from the antenna port of the device to an antenna.
Inventors:
MENG QINGNAN (CN)
Application Number:
PCT/CN2019/090976
Publication Date:
June 11, 2020
Filing Date:
June 12, 2019
Export Citation:
Assignee:
HONGKONG VALIN TECH COMPANY LIMITED (CN)
International Classes:
H04B1/40; H04B1/525
Foreign References:
| CN109495124A | 2019-03-19 | |||
| CN108777585A | 2018-11-09 | |||
| CN108777585A | 2018-11-09 | |||
| CN108429556A | 2018-08-21 | |||
| CN108365863A | 2018-08-03 | |||
| KR100767413B1 | 2007-10-18 |
Attorney, Agent or Firm:
WUHAN KAIYUAN INTELLECTUAL PROPERTY AGENT LTD. (CN)
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