Microwave photonic broadband radio frequency transceiver method and device
A technology of microwave photonics and radio frequency transceivers, applied in the field of microwave photonics, can solve the problems of safety and reliability limitations, lack of versatility, unusable radio frequency transceiver parts, etc., and achieve good versatility, good economy, and improved safety Effect
Active Publication Date: 2020-03-10
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology
However, the RF transceiver part of various microwave photonic systems is often not universal. For example, the RF transceiver part of the microwave photonic communication system cannot be used in the microwave photonic radar system, and vice versa
In addition, the radio frequency transceiver part of the existing microwave photonic system cannot perform frequency hopping, which also limits the safety and reliability of the system to a certain extent
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[0038] Aiming at the deficiency that the radio frequency transceiver part in the prior art has no versatility and is difficult to realize frequency hopping, the present invention proposes a microwave photonic wideband radio frequency transceiver device which has versatility and can conveniently realize baseband frequency hopping, and its basic principle It is: at the signal transmitting end, the optical carrier is generated by a single-wavelength laser, and one optical carrier is input to the optical frequency comb generation and selection unit to obtain an optical comb with a certain frequency difference from the optical carrier, and one optical carrier is input to the optical carrier modulation The unit uses the baseband signal to modulate the optical carrier to obtain the optical carrier modulated with the baseband signal; the modulated microwave signal can be obtained by using the optical comb to beat the optical carrier modulated with the baseband signal, and the frequency ...
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The invention discloses a microwave photon broadband radio frequency receiving and transmitting method, which comprises the following steps of: dividing a single-frequency optical carrier into three paths at a transmitting end; generating an optical comb tooth having a certain frequency difference with the single-frequency optical carrier by using the first path of single-frequency optical carrier, modulating a baseband signal on the second path of single-frequency optical carrier, generating an electro-optical modulation signal, and sending the third path of single-frequency optical carrier to a receiving end; performing beat frequency on the optical comb teeth and the electro-optical modulation signal by using a photoelectric detector, and transmitting a modulation microwave signal obtained by the beat frequency through a transmitting antenna; And at a receiving end, carrying out optical single sideband modulation on the third path of single-frequency optical carrier wave by using the modulation microwave signal received by the receiving antenna, and carrying out coherent demodulation on the obtained optical single sideband modulation signal by using the optical comb teeth as reference signals. The invention also discloses a microwave photon broadband radio frequency transmitting and receiving device. Compared with the prior art, the frequency hopping circuit has universalityand can conveniently realize frequency hopping.
Description
technical field [0001] The invention relates to a microwave photon broadband radio frequency transceiver method, which belongs to the technical field of microwave photonics. Background technique [0002] With the advancement of electronic information technology, electronic applications such as communication and radar have put forward higher requirements for bandwidth. For communication or radar systems with large bandwidth, wideband radio frequency transceiver is the key. Facing the challenge of higher bandwidth in radio frequency transceiver, the traditional microwave system has reached its bandwidth bottleneck. Therefore, microwave photonic technology came into being. [0003] Compared with traditional microwave systems, microwave photonic systems have many advantages. First of all, in terms of bandwidth, compared with microwave devices, optical devices have several orders of magnitude higher operating bandwidth. Microwave photonic technology has been more and more wide...
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IPC IPC(8): H04B10/516H04B10/61H04B10/40
Inventor 张方正史经展潘时龙
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS