Frequency conversion and phase shifting integrated photonic microwave mixing device

Abstract

The invention provides frequency conversion phase-shifting integrated photonic microwave mixing device which comprises a laser, a polarization multiplexing parallel light modulator (also known as a dual polarization parallel light modulator, a polarization multiplexing I / Q modulator, a dual polarization I / Q modulator), a bipolarized light filter, an optical domain phase shifter, and an optical coherence detector. A parallel structure photonic mixer based on orthogonal polarization multiplexing technology is realized by the polarization multiplexing parallel optical modulator, which makes the RF modulated optical signal and the LO modulated optical signal in the orthogonal polarization state with phase coherence, and keeps the phase of the two parallel optical signals relatively stable allthe time, and realizes arbitrary phase shifting of the obtained intermediate frequency signal through the optical domain phase shifter. Compared with the traditional microwave mixer, the device has larger bandwidth, spurious-free dynamic range and smaller group delay fluctuation, and can realize the functional integration of frequency mixing and phase shifting.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a photonic microwave frequency mixing device integrated with frequency conversion and phase shifting. Background technique [0002] With the continuous development of communication technology and radar technology and other fields, the requirements for the performance of the radio frequency receiving system are getting higher and higher, for example: it should be able to receive signals with higher carrier frequency and larger instantaneous bandwidth, and it should have better linearity Accuracy (measured by dynamic range) and higher sensitivity (measured by minimum detectable power), etc. Limited by the analog-to-digital conversion technology, for high-frequency broadband signals, the frequency converter has become an indispensable analog signal processing function module in the radio frequency system. Since the development of frequency converter based on traditio...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the existing technical problems, the present invention provides a frequency conversion and phase shift integrated photonic microwave mixing device, which is used to solve the problem that the optical paths of the two optical paths are difficult to match caused by the discrete optical fiber devices in the photonic mixer of the parallel modulator architecture. problem, and realize the integration of phase shift function and frequency mixing function

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