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Antenna pattern measurement using nested Mach-Zehnder optical modulator and uni-traveling carrier photodiode in millimeter wave

An antenna pattern measurement system above 100 GHz using a nested LiNbO3 Mach-Zehnder (LNMZ) modulator and a uni-traveling carrier photodiode (UTC-PD) is proposed. This system can minimize the influence of waveguide components because an optical fiber is used as the mm-wave transmission line. Therefore, this system achieves precise antenna pattern measurements above 100 GHz.