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Proceedings Paper

Frequency-doubling microwave signal generation with tunable phase shift based on DP-QPSK modulator
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Paper Abstract

A novel system for frequency-doubling microwave signal generation with tunable phase shift based on a dual-polarization quadrature phase shift keying (DP-QPSK) modulator which includes two dual-parallel Mach-Zehnder modulators (DPMZM) is proposed and demonstrated. The radio frequency (RF) signals drive the top DPMZM for generating a negative first-order RF sideband on the X-polarization state and drive the bottom DPMZM to obtain a positive first-order RF sideband on the Y-polarization state. After that, the two first-order sidebands enter a three wave-plates polarization controller (PC) of half-quarter-quarter (HQQ) wave plate type and then their phases are controlled. After a polarizer and a photodiode (PD), a frequency-doubling microwave or millimeter-wave signal with tunable phase shift is produced. The results indicate a full 360-degree phase shift is realized, in the meantime, the phase deviation is less than 1-degree and amplitude deviation is no more than 0.3dB.

Paper Details

Date Published: 17 April 2019
PDF: 5 pages
Proc. SPIE 11071, Tenth International Conference on Signal Processing Systems, 110710C (17 April 2019); doi: 10.1117/12.2520719
Show Author Affiliations
Conghui Zhang, Inner Mongolia Univ. (China)
Xinjing Qiu, Inner Mongolia Univ. (China)
Caili Gong, Inner Mongolia Univ. (China)
Yongfeng Wei, Inner Mongolia Univ. (China)
Xinlu Gao, Beijing Univ. of Posts and Telecommunications (China)


Published in SPIE Proceedings Vol. 11071:
Tenth International Conference on Signal Processing Systems
Kezhi Mao; Xudong Jiang, Editor(s)

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