Broadband microwave frequency down-conversion using cascade Mach-Zehnder modulators to capture the target distance information

被引：0

作者：

Li X. ^{[1
,2
]}

Wang Y.-L. ^{[2
]}

Ni Z.-H. ^{[2
]}

Luo X. ^{[2
]}

Zhang J. ^{[2
]}

Wo J.-H. ^{[2
]}

Wang A.-L. ^{[2
]}

Du S.-R. ^{[2
]}

Peng X.-N. ^{[1
]}

机构：

[1] Hubei Key Laboratory of Ferroelectric and Dielectric Materials, Hubei University, Wuhan

[2] Air Force Early Warning Academy, Wuhan

来源：

Wang, Ya-Lan (ylwang_opt@126.com); Peng, Xiao-Niu (xnpeng_hbu@126.com) | 1600年 / Chinese Academy of Sciences卷 / 28期

关键词：

Broadband frequency down-conversion; Mach-Zehnder modulator; Microwave photonics; OptiSystem;

D O I：

10.37188/OPE.20202812.2622

中图分类号：

学科分类号：

摘要：

Based on cascade Mach-Zehnder modulators (MZMs), a broadband microwave frequency down-conversion method was proposed, and the target distance information was derived from the down-converted intermediate frequency (IF). In the proposed scheme, a linear frequency modulated microwave signal was multiplicated by controlling the bias point and modulation index of MZM. The multiplicated signal was then transferred through an electric time delay to simulate the retuning signal of the target, and the transferring delayed optical sidebands are modulated on MZM. The IF signal carrying the target distance information was obtained after a low-pass filter. Analogous simulations of frequency doubling, quadruplicating, and sextupling of central frequencies of 10.8, 21.8, and 32.4 GHz and bandwidths of 2.7, 5.6, and 8.4 GHz are achieved. Moreover, as the electrical time delay increases, the IF linearly decreases. The proposed method is proven to be flexible, highly accurate, and easily implemented, demonstrating its great potential in radar systems for wideband imaging systems. © 2020, Science Press. All right reserved.

引用

页码：2622 / 2628

页数：6

共 22 条

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