Title :
Measurements for body-to-body UWB WBAN radio channels
Author :
Kumpuniemi, Timo ; Hamalainen, Matti ; Yazdandoost, Kamya Yekeh ; Iinatti, Jari
Author_Institution :
Centre for Wireless Commun., Univ. of Oulu, Oulu, Finland
Abstract :
This article examines body-to-body ultra wideband (UWB) wireless body area network signal propagation. The results are based on static frequency domain measurements conducted in an anechoic chamber in the frequency band of 2 - 8 GHz using a vector network analyzer. Two test persons both equipped with two on-body antennas were involved. Two planar UWB antenna types were used: dipole and double loop. The effect of distance and the relative position of the persons were examined. Path loss (PL) models were developed in the case the persons standing face to face. The noted PL exponents were between 1.87...2.53. The first arriving paths showed lower PL and channel power imbalance for the loops. The cross-correlations between the channels were found to be high.
Keywords :
UHF antennas; anechoic chambers (electromagnetic); antenna radiation patterns; body area networks; dipole antennas; frequency-domain analysis; loop antennas; microwave antennas; network analysers; planar antennas; ultra wideband antennas; ultra wideband communication; wireless channels; anechoic chamber; body-to-body UWB WBAN radio channel measurement; channel power imbalance; dipole loop; double loop; frequency 2 GHz to 8 GHz; on-body antenna; path loss model; planar UWB antenna; static frequency domain measurement; ultra wideband wireless body area network signal propagation; vector network analyzer; Antenna measurements; Body area networks; Dipole antennas; Frequency-domain analysis; Wireless communication; body to body communication; radio channel; ultra wideband; wireless body area network;
Conference_Titel :
Antennas and Propagation (EuCAP), 2015 9th European Conference on
Conference_Location :
Lisbon
