Device and method for implementing transmit frequency diversity array based on microwave photon frequency conversion
A technology of transmitting frequency and microwave photons, applied in the field of signal processing, can solve the problems of large insertion loss, limit the range resolution of radar systems, and narrow adaptation bandwidth, and achieve the effect of overcoming large insertion loss, excellent performance, and alleviating radio frequency isolation.
Active Publication Date: 2022-03-08
SOUTHWEST PETROLEUM UNIV
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Problems solved by technology
For example: usually the working frequency of the surface acoustic wave filter does not exceed 5GHz, the signal frequency generated by digital synthesis is difficult to exceed 6GHz, and the working frequency of the voltage-controlled oscillator is also several GHz, thus limiting the distance resolution of the radar system
Not only that, the electrical delay line used in the literature is based on the production of printed boards, which is suitable for narrow bandwidth and large insertion loss
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[0035] All of the features disclosed in this specification, or all methods or processes disclosed in this specification, in addition to the features and / or steps of inter-repertril, can be combined in any manner.
[0036] Any feature disclosed in this specification (including any additional claims, abstract), unless otherwise specified, it can be replaced by other alternative or similar purposes. That is, unless specifically described, each feature is only an example of a series of equivalents or similar features. The structure and operation of the present invention will be described below with reference to the accompanying drawings, and the exemplary examples are intended to be construed as they are not intended to limit the scope of the invention.
[0037] A transmit frequency diversity array based on microwave photon variable frequency provided by the present invention is implemented figure 1 As shown, the monochromatic light F0 emitted by the high stable narrowband laser is ...
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The invention discloses a device and method for implementing a transmission frequency diversity array based on microwave photon frequency conversion. The device comprises: the arbitrary waveform generator is connected to the radio frequency input port of the acousto-optic modulator, the radio frequency signal source is connected to the radio frequency input port of the dual parallel modulator, and the bias control circuit is connected to the bias control port of the dual parallel modulator The monochromatic laser is connected to the input port of the optical coupler one; the output port one of the optical coupler is connected to the input port one of the optical coupler two through the acousto-optic modulator, and the output port two of the optical coupler one is connected to the optical The input port 2 of the coupler 2; the optocoupler 2 divides the signal into N output channels, which correspond to N adjustable light delay lines respectively, forming N emission channels; the N adjustable light delay lines are connected to the photodetector in turn device and RF front-end to reach the antenna array containing N array elements. The invention realizes the up-conversion processing of the baseband linear frequency modulation signal in the optical domain, and generates the transmission frequency diversity signal on this basis, and can adapt to the use requirements of millimeter wave and miniaturization in the future.
Description
Technical field [0001] The present invention relates to the field of signal processing, in particular, an emission frequency diversity array implementation device and method based on microwave photon frequency conversion. Background technique [0002] In some applications such as communication base stations, radar systems, I hope to integrate the RF front end and the launch antenna, which requires the radio front end to be as simplified as possible. Based on the radio frequency front end of the electrical method is limited to the cable insert loss, the launch source and front-end enlargement can not be distinguished long distance, so it is not conducive to the simplification of the front-end system, while the fiber-specific long-range high fidelity transmission characteristics can support long-distance separation . [0003] The frequency diversity array has been widely studied due to a distance-related beam. A method of implementing a frequency diversity array using a linear freq...
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IPC IPC(8): H04B10/50H04B10/516H04B10/548
CPCH04B10/50H04B10/516H04B10/548
Inventor 伍振海刘静娴李晓辉
Owner SOUTHWEST PETROLEUM UNIV