Antenna measurement by simple optical link system using radio on fiber technologies

We propose a simple optical fiber link microwave measurement system that consist of a vector network analyzer, two modules of Electric signal to optical signal converter and a module of optical signal to electric signal converter. The system can measure S-parameters of two-port devices using a vector network analyzer (VNA) in full 2-port calibration. In this paper, we show frequency characteristics, the time stability and the ambient temperature stability of the simple optical fiber link system for the antenna properties measurement. In the case of ambient temperature within 3 degrees, S₂₁(ω) time stability of the simple optical fiber link system is less than 0.1 dB in the frequency range from 30 MHz to 1000 MHz.