Open AccessReconfigurable multi-band microwave photonic radar transmitter with a wide operating frequency range
Author(s) -
Xiangpeng Zhang,
Qiang Sun,
Jiyao Yang,
Jianwei Cao,
Wangzhe Li
Publication year - 2019
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.27.034519
Subject(s) - transmitter , bandwidth (computing) , radar , phase noise , radio frequency , frequency modulation , microwave , frequency band , local oscillator , center frequency , radio transmitter design , optics , continuous wave radar , physics , electronic engineering , telecommunications , computer science , band pass filter , radar imaging , engineering , channel (broadcasting)
A photonics-assisted multi-band radar transmitter operating in a wide frequency range has been proposed and experimentally demonstrated. The multi-band radar transmitter incorporates a tunable optoelectronic oscillator (OEO), a low-frequency RF source and a microwave photonic frequency-converting link. In the frequency-converting link, a single tone with ultra-low phase noise and a low-frequency narrow-band RF signal that are generated respectively by the OEO and the RF source, are mixed, frequency converted and bandwidth multiplied to generate multi-band transmission signals. The central frequency, bandwidth and modulation format of transmission signals are reconfigurable. A multi-band radar transmitter with an instantaneous bandwidth of 1.6 GHz is developed. The frequency range of the multi-band radar transmitter covers six bands (from S to Ka), and a moving target detection experiment verifies that the proposed system has potential in multifunctional radar applications.