TY - GEN
T1 - Stacked-patch antenna with switchable propagating mode for UHF body-centric communications
AU - Scanlon, William G.
AU - Chandran, Anupam R.
PY - 2009
Y1 - 2009
N2 - The ability to electronically switch between off-body and on-body communications is a useful feature for wearable antenna applications. Therefore, we present a novel stacked-patch antenna with a switched propagation mode for body-centric communications at 2.45 GHz. Mounted 2 mm above a muscle-tissue phantom and in the on-body mode, the proposed single-port antenna had an efficiency of 62% and an impedance bandwidth of 70 MHz. The antenna performance increased in the off-body mode with an efficiency of 80% and an impedance bandwidth of 247 MHz. In terms of on-body coupling in anechoic conditions, peak |S21| path gains of -39.6 dB and -48.0 dB were obtained for the on-body and off-body configurations, respectively. These results clearly demonstrate the mode isolation obtained.
AB - The ability to electronically switch between off-body and on-body communications is a useful feature for wearable antenna applications. Therefore, we present a novel stacked-patch antenna with a switched propagation mode for body-centric communications at 2.45 GHz. Mounted 2 mm above a muscle-tissue phantom and in the on-body mode, the proposed single-port antenna had an efficiency of 62% and an impedance bandwidth of 70 MHz. The antenna performance increased in the off-body mode with an efficiency of 80% and an impedance bandwidth of 247 MHz. In terms of on-body coupling in anechoic conditions, peak |S21| path gains of -39.6 dB and -48.0 dB were obtained for the on-body and off-body configurations, respectively. These results clearly demonstrate the mode isolation obtained.
UR - https://www.scopus.com/pages/publications/67650468931
U2 - 10.1109/IWAT.2009.4906964
DO - 10.1109/IWAT.2009.4906964
M3 - Conference proceeding
AN - SCOPUS:67650468931
SN - 9781424443963
T3 - 2009 IEEE International Workshop on Antenna Technology, iWAT 2009
BT - 2009 IEEE International Workshop on Antenna Technology, iWAT 2009
T2 - 2009 IEEE International Workshop on Antenna Technology, iWAT 2009
Y2 - 2 March 2009 through 4 March 2009
ER -