Title :
Compact low-profile patch antenna for medical body area networks at 868 MHz
Author :
Chandran, Anupam R. ; Conway, Gareth A. ; Scanlon, William G.
Author_Institution :
Queen´´s Univ. of Belfast, Belfast
Abstract :
An extremely compact patch antenna suitable for use in medical body area network (MBAN) applications is reported. The antenna is loaded with rectangular slots, placed symmetrically on either side of the feed post, and it uses shorting pins to generate an over-the-body-surface propagating mode. Furthermore, from the measured and FDTD simulated results it is verified that for an on-body path the performance of the new antenna was similar to that of a full size lambda/4 monopole. The antenna provided a 2:1 impedance bandwidth of 2.1%. Despite being electrically small and in close proximity to a muscle tissue phantom, the simulated radiation efficiency of the antenna was 54 %.
Keywords :
UHF antennas; antenna feeds; antenna radiation patterns; biomedical telemetry; finite element analysis; microstrip antennas; muscle; personal area networks; phantoms; slot antennas; wireless sensor networks; FDTD simulation; MBAN; antenna feed post; antenna radiation efficiency; biomedical sensor networks; electrically small antenna; frequency 868 MHz; impedance bandwidth; low-profile patch antenna; medical body area network; muscle tissue phantom; over-the-body-surface propagating mode; rectangular slots; Antenna feeds; Antenna measurements; Antennas and propagation; Body area networks; Finite difference methods; Loaded antennas; Patch antennas; Pins; Size measurement; Slot antennas;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2008. AP-S 2008. IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-4244-2041-4
Electronic_ISBN :
978-1-4244-2042-1
DOI :
10.1109/APS.2008.4619350
