Photonic Generation and Transmission of Dual-Band Dual-Chirp Microwave Waveforms at C-Band and X-Band With Elimination of Power Fading
Author(s): Wang, L (Wang, Lu); Hao, TF (Hao, Tengfei); Li, GY (Li, Guangyi); Sun, WH (Sun, Wenhui); Li, M (Li, Ming); Zhu, NH (Zhu, Ninghua); Li, W (Li, Wei)
Source: IEEE PHOTONICS JOURNAL Volume: 13 Issue: 1 DOI: 10.1109/JPHOT.2021.3050254 Published: FEB 2021
Abstract: We propose a photonic method to generate and transmit dual-band dual-chirp microwave waveforms based on a dual-polarization dual-parallel Mach-Zehnder modulator (DP-DPMZM). The key novelty of this work is the generation of dual-band dual-chirp waveforms with flexible central frequency relationship to meet the requirement of the dual-band radar system, and transmission of the generated waveforms with elimination of power fading. In the proposed method, dual-band dual-chirp microwave waveforms are generated by applying two different RF signals and a parabolic coding signal to the DP-DPMZM. By properly adjusting the DC biases of the x-DPMZM and y-DPMZM, dispersion-induced power fading effect in the transmission of the generated waveforms can be compensated. A proof-of-concept experiment is conducted to generate and transmit dual-band dual-chirp microwave signals at C-band and X-band (centered at 7 GHz and 10 GHz) with tunable bandwidth. The proposed system has a simple structure and good reconfigurability, which has great potential in applications such as dual-band radar systems.
Accession Number: WOS:000636145100013
Author Web of Science ResearcherID ORCID Number
Li, Ming 0000-0001-8959-9619
Li, Guangyi 0000-0003-2152-8114