VHF (Very High Frequency) radio station interference cancellation device
An interference cancellation, radio station technology, applied in electrical components, transmission systems, etc., can solve problems such as inapplicability
Active Publication Date: 2019-02-15
NAVAL UNIV OF ENG PLA
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Problems solved by technology
None of the above inventions is suitable for dealing with interference suppression between VHF stations with independent antennas and the same port for sending and receiving
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[0046] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments to facilitate a clear understanding of the present invention, but they do not limit the present invention.
[0047] figure 1 It is a structural block diagram of an embodiment of the present invention: including a transceiver switching module 1, an interference sampling module 2, an interference cancellation module 3, a synthesis and feedback module 4, and a control module 5; wherein
[0048] The 1st to Nth antenna interfaces of the transceiver switching module 1, where N is an integer ≥ 2, are respectively connected to the 1st to Nth antennas, and the 1st to Nth radio interfaces are respectively connected to the 1st radio station and the Nth radio station , its 1st to Nth interference output terminals are respectively connected to the 1st to Nth interference input terminals of the synthesis and feedback module 4, and its 1st to Nth error...
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The invention provides a VHF (Very High Frequency) radio station interference cancellation device which comprises a transceiving switching module, an interference sampling module, an interference cancellation module, a synthesis and feedback module and a control module. The input ends of the transceiving switching module are connected with antennas and radio stations. The input end of the controlmodule receives radio station transceiving signals for monitoring transceiving states of the radio stations in real time; the transceiving switching module, according to a VHF radio station transceiving state instruction provided by the control module and in the transmitting and receiving process of the radio station, respectively connects the interference sampling module and the synthesis and feedback module in series between the radio stations and the antennas for carrying out interference sampling and interference cancellation; the interference sampling module is used for carrying out sampling on radio station transmission signals; the interference cancellation module is used for generating radio frequency cancellation signals; and the synthesis and feedback module is used for synthesizing interference signals and the cancellation signals and carrying out sampling on error signals after synthesis. The invention aims to eliminate side-channel interference and receiver intermodulationinterference among multiple VHF radio stations.
Description
technical field [0001] The invention belongs to the technical field of circuit design and equipment level electromagnetic compatibility, and in particular relates to a very high frequency radio station interference cancellation device. Background technique [0002] The VHF electromagnetic wave signal has a linear propagation characteristic similar to light waves, has high stability, and is less affected by external conditions. VHF radios are mainly used in broadcast television, military and modern aviation fields. Especially in the aviation and military fields, the real-time communication performance of the VHF radio is extremely demanding. In airport dispatching, the VHF radio station is mainly used to keep in touch with the ground during the flight to realize airport dispatching. Interference or interruption of the VHF communication between the control tower and the take-off and landing aircraft may endanger the normal flight order of the flight, and even cause serious a...
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IPC IPC(8): H04B1/10
CPCH04B1/1036H04B2001/1045
Inventor 何方敏孟进李毅葛松虎周亮吴灏
Owner NAVAL UNIV OF ENG PLA