Abstract
We propose an optical approach to estimate the angle of arrival (AoA) of a microwave signal. The microwave signal and its phase-shifted replica received from separated antenna elements are applied to a null-biased dual-drive Mach–Zehnder modulator. An optical loss resonance at the optical carrier is introduced by stimulated Brillouin scattering in optical fiber. By measuring the resultant optical power, we can obtain the phase difference, from which the AoA of the incoming microwave signal can be determined. An experiment is carried out, which exhibits that phase measurement errors are <1.86 deg with a phase difference from 9 deg to 162 deg.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
