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Multi-octave microwave transmission device and multi-octave microwave transmission method

A microwave transmission and multi-frequency technology, which is applied in the field of signal transmission, can solve problems such as power attenuation and reduce transmission link SFDR, and achieve the effect of small distortion components and large spurious-free dynamic range

Active Publication Date: 2021-03-05
JINAN UNIVERSITY
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Problems solved by technology

In the long-distance multi-octave microwave photonic transmission link, due to the use of long-distance single-mode fiber, it will bring about the problem of power attenuation caused by fiber dispersion, and thus greatly reduce the SFDR of the transmission link

Method used

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Embodiment Construction

[0026] Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the specific embodiments set forth herein. Rather, the embodiments are provided to explain the principles of the invention and its practical application, thereby enabling others skilled in the art to understand the invention for various embodiments and with various modifications as are suited to particular intended uses.

[0027]As used herein, the term "comprising" and its variants represent open terms meaning "including but not limited to". The terms "based on", "based on", etc. mean "based at least in part on", "based on at least in part". The terms "one embodiment" and "an embodiment" mean "at least one embodiment." The term "another embodiment" means "at least one other embodiment." The terms "first", "second", etc. may refer t...

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Abstract

The invention provides a multi-octave microwave transmission device. The multi-octave microwave transmission device comprises a light source, a signal modulation unit, an optical polarizer, an opticalfiber and a photoelectric detector, the light source is used for generating and outputting an optical carrier; wherein the signal modulation unit is used for receiving an optical carrier and a microwave signal to be transmitted, and modulating the microwave signal to be transmitted to the optical carrier in a state of working in a carrier single sideband suppression state so as to form a modulated optical signal; the optical polarizer is used for receiving the modulated optical signal and performing polarization processing on the modulated optical signal to form a polarized optical signal; the optical fiber is used for transmitting the polarized light signal to the photoelectric detector; and the photoelectric detector is used for converting the polarized light signal into an electric signal. The invention further provides a multi-octave microwave transmission method. According to the invention, high-linearity long-distance transmission can be carried out on multi-octave microwave signals, and the problem of power attenuation caused by optical fiber dispersion can be overcome in microwave signal transmission.

Description

technical field [0001] The invention belongs to the technical field of signal transmission, and in particular relates to a multi-octave microwave transmission device and a multi-octave microwave transmission method. Background technique [0002] The multi-octave microwave transmission link is an important microwave transmission method, because it has a large spurious-free dynamic range (SFDR), which can make broadband microwave signals highly linear in the multi-octave state. It is widely used in antenna remote system, cable TV system, wireless communication system and military radar system. For example, in communication systems, the use of multi-octave links for microwave signal transmission means greater transmission capacity and greater signal coverage; while in radar systems, multi-octave microwave transmission can achieve higher resolution . [0003] In a multi-octave microwave transmission link, as the bandwidth of the input microwave signal increases, in addition to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/2575H04B10/25H04B10/548
CPCH04B10/2575H04B10/548
Inventor 王旭东郑瑞祺陈凯荣王琳吴幸雷刘文兵姚建平冯新焕张杰君曹元张军
Owner JINAN UNIVERSITY
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