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In the paper, we have shown that averaging the radiation patterns over several distances between two antennas is useful in order to reduce the influence of reflection waves, using simulation software FEKO. In the conditions with and without reflection waves we simulate the radiation patterns of the biconical antenna (the operation band is from 30 MHz to 300 MHz) in distance between antennas from 315...
Frequency characteristics of absorbing materials are evaluated in single-antenna calibration technique using a log- periodic antenna on a standard ground plane. The technique is applied to the data both in frequency- and time-domains, to evaluate the frequency characteristics of absorbing materials on the ground plane. Time-domain subtraction enables us to separate the wave reflected from absorbing...
We have proposed the optical fiber link antenna measurement system that can measure the calibrated S11 and S21 between two antennas under test (AUT) after OSLT calibration in one-pass two-port system. Our system consists of the transmitting and receiving optical-fiber link systems. The transmitting system consists of the electro-absorptive modulator, erbium doped fiber optical amplifier (EDFA), optical...
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