TY - CHAP
T1 - Joint Antenna-Channel Modelling for in-to-out-Body Propagation of Dairy Cows at 868 MHz
AU - Benaissa, Said
AU - Verloock, Leen
AU - Nikolayev, Denys
AU - Deruyck, Margot
AU - Vermeeren, Gunter
AU - Martens, Luc
AU - Tuyttens, Frank
AU - Sonck, Bart
AU - Plets, David
AU - Joseph, Joseph
PY - 2020
Y1 - 2020
N2 - In this paper, for the first time, the in-to-out-body path loss between a capsule antenna placed inside the cows' rumen and a distant gateway was characterized at 868 MHz. Measurements were conducted on five different fistulated cows in a dairy barn. The in-body antenna gain was then de-embedded from the wireless channel. The difference between free space measurements and in-to-out-body path loss assessment was used to quantity the path loss increase due to the cows' body. Results have shown an increase of the path loss on average (all cows) by 50.6 dB, with a variation between 43.7 and 55.3 dB. The obtained results were used to calculate the range of a LoRa (Long range) based network accounting for the antenna channel. With an input transmit power of 14 dBm, ranges up to 175 m in indoor and 364 m in outdoor were obtained depending on the used bit rate.
AB - In this paper, for the first time, the in-to-out-body path loss between a capsule antenna placed inside the cows' rumen and a distant gateway was characterized at 868 MHz. Measurements were conducted on five different fistulated cows in a dairy barn. The in-body antenna gain was then de-embedded from the wireless channel. The difference between free space measurements and in-to-out-body path loss assessment was used to quantity the path loss increase due to the cows' body. Results have shown an increase of the path loss on average (all cows) by 50.6 dB, with a variation between 43.7 and 55.3 dB. The obtained results were used to calculate the range of a LoRa (Long range) based network accounting for the antenna channel. With an input transmit power of 14 dBm, ranges up to 175 m in indoor and 364 m in outdoor were obtained depending on the used bit rate.
U2 - 10.23919/EuCAP48036.2020.9135635
DO - 10.23919/EuCAP48036.2020.9135635
M3 - C1: Articles in proceedings
BT - 14th European Conference on Antennas and Propagation (EuCAP)
ER -