Development and Experimental Validation of an Ultra-wideband Channel Sounder

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Vector network analyzer (VNA) has been extensively
utilized for radio channel sounding purposes. Due to its slow
channel sounding speed, it has been mainly used for channel measurements
in static propagation scenarios. The main limitation
with VNA based channel sounder is its small measurement range,
due to signal attenuation in the coaxial cable setup. Employing
radio over fiber (RoF) can effectively eliminate the cable loss
and hence enables the VNA for long range channel sounding.
However, optical cables are sensitive to phase changes in optical
cables in practical usage scenarios. In this paper, two phase
correction strategies, i.e. two-branch scheme and bi-directional
scheme, are discussed and experimentally validated to remove the
random phase change in the cable. The bi-directional scheme
is shown to be highly effective in removing the phase change
in the measurements. The virtual array VNA channel sounder
employing RoF technique and phase correction scheme is highly
attractive, since it supports channel sounding with arbitrary
frequency carrier setting, ultra-wideband, large-scale (virtual)
antenna settings with a large measurement range.
Original languageEnglish
Title of host publication13th European Conference on Antennas and Propagation (EuCAP)
Number of pages5
Publication dateApr 2019
Article number8739294
ISBN (Print)978-88-907018-8-7
ISBN (Electronic)978-88-907018-8-7
Publication statusPublished - Apr 2019
EventThe 13th European Conference on Antennas and Propagation - Krakow, Krakow, Poland
Duration: 31 Mar 20195 Apr 2019


ConferenceThe 13th European Conference on Antennas and Propagation
Internet address


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