Related Experiment Video
Updated: Feb 20, 2026

Wideband Optical Detector of Ultrasound for Medical Imaging Applications
Published on: May 11, 2014
Ultrawideband optical cancellation of RF interference with phase change
Abstract:
This work proposes a novel approach to perform optical cancellation of RF interference with any constant phase change, based on polarization-modulator-based microwave photonic phase shifters. Preliminary results validate the proposed scheme and achieve a 30-dB cancellation depth over 9.5 GHz. The frequency independent microwave photonic phase shifters also allow for wide frequency range tunability towards 30 GHz, and recovery of a signal from a wideband interferer. The experimental results are limited by the imperfection of the electrical components. The proposed cancellation scheme might not only be applicable for WLANs based on standards such as IEEE 802.11ad and 802.11aj, but also provide a straight forward solution to the multipath effect.
Related Concept Videos
Parallel Resonance
Interference: Path Lengths
Two special sources may be considered when they are in phase. This can be easily achieved by feeding the two sources from the same source. An example would be synchronizing the two speakers by feeding them with the same source, such as the sound waves produced by a tuning fork. This setup ensures that the two sources have the same frequency and are...
Interference and Diffraction
Time and frequency -Domain Interpretation of Phase-lead Control
The design of phase-lead control involves the strategic placement of poles and zeros to balance steady-state error and system...
Design Example
Time and frequency -Domain Interpretation of Phase-lag Control
Phase-lag controllers do not place a pole at zero, but instead influence the steady-state error by amplifying any...

