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19 November 2019 Phase shifter and phase response of PD in phased-array antennas
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Abstract
We study the phase requirement in phased-array antennas. Firstly, we present a tunable and wideband microwave photonic phase shifter based on polarization-dependence of the LiNbO3 Mach-Zehender modulator (MZM).With the proposed device, the phase of the optical microwave signal output from the polarizer can be tuned from 0 to 360 degree by simply adjusting the polarization direction of the lights whereas the amplitude keeps constant. A full range tunable phase shifting in the frequency range of 10 - 35 GHz is achieved. Secondly, we focus on the photodetector (PD) phase response with different input optical power and different PD. We study the Phase Retardation in InGaAs Photodetectors. The phase response of different PDs will affect the phased-array antennas.
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Wenhui Sun, Jiazheng Sun, Wei Li, and Ninghua Zhu "Phase shifter and phase response of PD in phased-array antennas", Proc. SPIE 11182, Semiconductor Lasers and Applications IX, 111820A (19 November 2019); https://doi.org/10.1117/12.2538128
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