Multichannel vector sum phase shifter.
A novel multichannel vector sum phase shifter that is suitable for phased array antenna applications is demonstrated. Each channel is implemented using a distinct optical wavelength. Selective control of each channel is performed using an acousto-optic polarization coupler. The concept is successfully demonstrated for two individually controlled channels. For each channel, a continuously variable frequency linear phase shift is demonstrated between DC and 7 GHz, with the phasing range exceeding 100 degrees.
School of Electrical and Computer Engineering, RMIT University, GPO Box 2476V, Melbourne 3001, Australia. lam.bui@rmit.edu.au
Lam Anh
LA
Bui
Kamran
K
Ghorbani
Arnan
A
Mitchell