Transmitting frequency diversity array implementation device and method based on microwave photon frequency conversion
A technology of transmitting frequency and microwave photons, which is applied in the field of signal processing, can solve the problems of large insertion loss, limit the distance resolution of the radar system, and adapt to narrow bandwidth, so as to overcome the large insertion loss, overcome the large transmission loss, and alleviate the radio frequency isolation. Effect
Active Publication Date: 2020-08-18
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 features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.
[0036] Any feature disclosed in this specification (including any appended claims, abstract), unless otherwise stated, may be replaced by alternative features which are equivalent or serve a similar purpose. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features. The structure and working principle of the present invention will be described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.
[0037] The device provided by the present invention based on microwave photon frequency conversion transmit frequency diversity array is as follows: figure 1As shown, the monochromatic light f0 emitte...
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The invention discloses a transmitting frequency diversity array implementation device and method based on microwave photon frequency conversion. The device comprises an arbitrary waveform generator,connected to a radio frequency input port of an acousto-optic modulator, a radio frequency signal source, connected to a radio frequency input port of a double-parallel modulator, and a first bias control circuit, connected to a bias control port of the double-parallel modulator. The monochromatic laser is connected with an input port of the first optical coupler. A first output port of the firstoptical coupler is connected with a second input port of the second optical coupler through the acoustic optical modulator, and a second output port of the first optical coupler is connected with a second input port of the second optical coupler through the double-parallel modulator. The output port of the second optical coupler, the adjustable optical delay line, the photoelectric detector, the radio frequency front end and the antenna array are connected in sequence. According to the invention, the up-conversion processing of the baseband chirp signal is realized in the optical domain, and the transmitting frequency diversity signal is generated on the basis, so that the use requirements of millimeter waves and miniaturization in the future can be met.
Description
technical field [0001] The invention relates to the technical field of signal processing, in particular to a device and method for implementing a transmit frequency diversity array based on microwave photon frequency conversion. Background technique [0002] In some applications such as communication base stations and radar systems, it is hoped to integrate the RF front-end and the transmitting antenna array, which requires the RF front-end to be as simple as possible. The transmitting RF front-end based on the electrical method is limited by the cable insertion loss, and components such as the transmitting source and the front-end amplifier cannot be separated for a long distance, so it is not conducive to the simplification of the front-end system, and the unique long-distance high-fidelity transmission characteristics of optical fiber can support long-distance separation. . [0003] Frequency diversity arrays have been extensively studied in recent years because they can...
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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