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

fYear

2008

fDate

5-11 July 2008

Firstpage

1

Lastpage

4

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/APS.2008.4619350

Filename

4619350