Mirror image rejection down-conversion receiving system and method based on photoelectric oscillator

A photoelectric oscillator and image suppression technology, which is applied in the field of optical communication, can solve the problems of IM suppression performance degradation and achieve the effects of avoiding mismatch problems, low power consumption, and high-performance optical down-conversion output

Active Publication Date: 2022-02-25
AIR FORCE EARLY WARNING ACADEMY
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  • Application Information

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Problems solved by technology

Although this type of method has the advantage that the applicable frequency is not limited, it also has the problem of reduced IM suppressi

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  • Mirror image rejection down-conversion receiving system and method based on photoelectric oscillator
  • Mirror image rejection down-conversion receiving system and method based on photoelectric oscillator
  • Mirror image rejection down-conversion receiving system and method based on photoelectric oscillator

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[0020] In order to make the objects and advantages of the present invention, the present invention will be further described below in connection with the embodiments;

[0021] A preferred embodiment of the present invention will be described below with reference to the accompanying drawings. It will be understood by those skilled in the art that these embodiments are merely illustrative of the technical principles of the invention, and are not intended to limit the scope of the invention.

[0022] It should be noted that the term "upper", "lower", "left", "left", ",", ",", ",", ",", ",",, is, based on the figures The direction or positional relationship is shown, which is merely intended to be described, rather than indicating or implying that the device or element must have a specific orientation, and is not understood to limit the limitation of the invention.

[0023]Further, it is also necessary to explain that in the description of the present invention, the term "mount", "con...

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Abstract

The invention discloses a mirror image rejection down-conversion receiving system and method based on a photoelectric oscillator, and mainly relates to the field of optical communication and the technical field of microwave photons. The system comprises a photoelectric oscillator loop and a down-conversion oscillation loop, the photoelectric oscillator loop comprises a laser, a first phase modulator, an optical amplifier, a first optical circulator, a first phase shift Bragg grating, a first photoelectric detector and an electric coupler, and selective amplification receiving of radio frequency input signals is achieved; and the down-conversion oscillation loop comprises a second phase modulator, a second circulator, a second phase shift Bragg grating, a second photoelectric detector, an electric amplifier and an electric beam splitter, and down-conversion output of the radio frequency input signal is realized. The beneficial effects of the invention are that the system does not need external local oscillator signal source input, the input IM signal is filtered through the frequency selection characteristic of the photoelectric oscillator, the 'mismatch problem' in the phase cancellation technology can be avoided, and the applicable frequency range can be tuned by tuning the frequency of the laser.

Description

technical field [0001] The present invention relates to the field of optical communication and the field of microwave photon technology, in particular to a photoelectric oscillator-based image suppression down-conversion receiving system and method. Background technique [0002] In existing radar and communication applications, the RF front-end is mainly based on microwave electronic technology to realize signal frequency conversion and transmission. With the increase of processing frequency, the traditional RF front-end faces "electronic bottlenecks" such as large transmission loss, difficult high-frequency processing, limited bandwidth, poor isolation, and susceptibility to electromagnetic interference, and cannot solve the needs of multi-band and multi-function. The resulting electronic devices are complex, heavy, high power consumption, and high cost. [0003] The frequency down-conversion based on microwave photonic technology is to modulate the radio frequency signal ...

Claims

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Application Information

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IPC IPC(8): H04B10/2575H04B10/556
CPCH04B10/2575H04B10/5561H04B10/5563
Inventor 张进沃江海王亚兰王安乐王党卫张德培
Owner AIR FORCE EARLY WARNING ACADEMY
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