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Broadband Signal Microwave Photon Phase Shifting Method and System Based on Dual Carriers

A broadband signal and microwave photon technology, applied in the field of optoelectronics, can solve the problems of limited rate and system capacity of wireless communication systems, limited bandwidth of phase-shifting signals, etc., to improve rate and system capacity, improve angular resolution, and improve beam pointing The effect of precision

Active Publication Date: 2020-07-03
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0004] However, the bandwidth of the phase shift signal generated by the phase shifter in the prior art is limited, which limits the rate and system capacity of the wireless communication system

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  • Broadband Signal Microwave Photon Phase Shifting Method and System Based on Dual Carriers
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  • Broadband Signal Microwave Photon Phase Shifting Method and System Based on Dual Carriers

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Embodiment Construction

[0031] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0032] The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, but not to be construed as a limitation of the present invention.

[0033] It will be understood by those skilled in the art that the singular forms "a", "an", "the" and "the" as used herein can include the plural forms as well, unless expressly stated otherwise. It will further be understood that when we refer to...

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Abstract

The invention discloses a microwave photon phase shifting method and a system of a broadband signal based on dual carriers. The method comprises the following steps: a local signal is loaded on two optical carriers with phase correlation by upper sideband modulation; a broadband radio frequency signal is loaded on the two optical carriers by lower sideband modulation; the broadband radio frequencysignal is loaded on the two optical carriers by lower sideband modulation. Filtering an upper sideband signal of a download wave of the optical carrier and a lower sideband signal of the upper carrier; the phase-shifted wideband RF signal is obtained by beating the filtered signal. By applying the invention, the wideband signal can be controlled to realize the phase shift, thereby improving the wireless communication system speed and the system capacity, improving the beam pointing accuracy of the beam forming system, improving the angular resolution of the radar system, and further improvingthe imaging resolution of the imaging radar.

Description

technical field [0001] The invention relates to the technical field of optoelectronics, in particular to a dual-carrier-based broadband signal microwave photon phase shifting method and system. Background technique [0002] As a new field, microwave photonics mainly researches photonic devices and related applications working in the microwave, millimeter wave and even terahertz bands. The research content includes the generation, processing, conversion and distribution, and transmission of microwave signals over broadband optical links. Microwave photonic phase shifter is an important signal processing technology in the field of microwave photonics. Photonic radio frequency phase shifting technology uses optical and optoelectronic devices to realize the phase shifting function of radio frequency signals. It is a key technology in modulation, which has the advantages of high linearity, good tunability, and wide coverage. At the same time, photonic phase shifters have the ad...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/516H04B10/548
CPCH04B10/516H04B10/5165H04B10/548
Inventor 高欣璐黄善国白云平雷明政
Owner BEIJING UNIV OF POSTS & TELECOMM
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