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A Device for Actively Calibrating the Phase of Microwave Signals Transmitted by Optical Fiber Using a Photoelectric Oscillator

A technology of photoelectric oscillator and microwave signal, which is applied in the field of microwave photonics, can solve the problems of large correction error and low correction precision, and achieve the effect of realizing practicality, overcoming low precision and low phase noise

Active Publication Date: 2017-07-14
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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Problems solved by technology

However, the correction accuracy using passive phase correction is low and requires a large correction error
In order to overcome the shortcomings of passive phase control, this patent proposes a new method to actively eliminate the phase error of RF signals in real time

Method used

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  • A Device for Actively Calibrating the Phase of Microwave Signals Transmitted by Optical Fiber Using a Photoelectric Oscillator
  • A Device for Actively Calibrating the Phase of Microwave Signals Transmitted by Optical Fiber Using a Photoelectric Oscillator
  • A Device for Actively Calibrating the Phase of Microwave Signals Transmitted by Optical Fiber Using a Photoelectric Oscillator

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Embodiment Construction

[0015] The device provided by the present invention for actively calibrating the phase of the microwave signal transmitted by optical fiber by using the photoelectric oscillator includes: a central station 20 and a base station 50, and the central station 20 and the base station 50 are connected by a single-mode optical fiber 40. According to the device for actively calibrating microwave signal optical fiber transmission using an optoelectronic oscillator, the central station 20 includes: a laser 21 for carrying a microwave signal to be transmitted, and the optical signal is input to a double-balanced Mach-Zehnder intensity modulator 22 to generate modulation The sideband is then passed through the optical filter. For the Mach-Zehnder modulator, one Mach-Zehnder modulation is biased at the minimum transmission point, so the carrier is suppressed, and the other Mach-Zehnder modulator is biased at the maximum transmission point. The optical filter performs filtering to generate a ...

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Abstract

A device for actively calibrating the phase of a microwave signal transmitted by an optical fiber using a photoelectric oscillator includes: a central station and a base station, and the central station and the base station are connected through a single-mode optical fiber. The invention can overcome the disadvantages of traditional electronic methods in terms of bandwidth, weight, volume, electromagnetic interference, etc., and break through the bottleneck of electronic technology to realize stable phase transmission of high-frequency microwave signals.

Description

Technical field [0001] The invention belongs to the technical field of microwave photonics, more specifically, it is a kind of photonic technology and photoelectric oscillator theory to transmit microwave signal form in stable phase, and a device for realizing optical fiber stable phase transmission of microwave signal based on round-trip phase correction technology. Background technique [0002] In recent years, the use of single-mode optical fiber based on photonic technology to transmit microwave signals in a stable phase has attracted widespread attention, including modern multi-base station radars, long-base interferometric deep-space detection systems, various interferometric systems, and long-base antennas for radio astronomy. The integration of microwave technology and photonic technology has become an inevitable trend of technological progress in fields such as radio frequency communication systems such as arrays and electronic countermeasure systems. Steady phase transm...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/2587
Inventor 王文亭刘建国梅海阔王欣祝宁华
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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