Patent ID: 6661377
Filing Date: 2003-12-09
Classification: H01Q

Abstract:
A phased array antenna comprising;a multimode Fabry-Perot laser diode that generates optical pulses by gain switching, a high-dispersion fiber which carries said optical pulses and which generates a microwave signal by separating each mode of said multimode Fabry-Perot laser diode, a power splitter that distributes said mode-separated optical pulse train into a number of antennas in the array to send the pulse signal to the antenna array, a time delay line which causes a phase difference for different time delays respectively by passing said distributed optical pulses through different lengths of non-dispersive fiber respectively, a photodetector which photo-electrically converts said optical pulses having the phase difference, an amplifier that amplifies said photo-electrically converted pulses, and an antenna array that transmits said amplified pulses.