Title :
VHF/UHF band antenna measurement using return loss compensation
Author :
Hu Chufeng ; Li Nanjing ; Chen Weijun
Author_Institution :
Sci. & Technol. on UAV Lab., Northwestern Polytech. Univ., Xi´an, China
Abstract :
VHF / UHF band antenna measurement is easily influenced by surroundings. Since the bandwidth of antenna is narrow, the corresponding time-domain resolution is low, so it is difficult to eliminate the effect of multipath signals by adding a time domain gating. This paper presents a method which uses the return loss of antennas to compensate the spectrum of signals. The method extends the test bandwidth of antenna and improves the time domain resolution of signals, thus multipath interference signals are more easily to separate. The experiment of a half wavelength dipole antenna is measured in an anechoic chamber, the results show that the method can eliminate the influence of multipath interference; the measured pattern is consistent with the theoretical value.
Keywords :
UHF antennas; VHF antennas; dipole antennas; interference (signal); UHF band antenna measurement; VHF band antenna measurement; anechoic chamber; half wavelength dipole antenna; multipath interference signals; return loss compensation; time domain gating; time-domain resolution; Antenna measurements; Dipole antennas; Interference; Time-domain analysis; UHF measurements; Wavelength measurement; VHF / UHF band antenna measurement; multipath interference; return loss compensation; time domain gating;
Conference_Titel :
Antennas and Propagation (ISAP), 2014 International Symposium on
Conference_Location :
Kaohsiung
DOI :
10.1109/ISANP.2014.7026483