Title :
Switchable surface wave antenna for on/off-body communications
Author :
Qiang Bai ; Ford, Kenneth L. ; Langley, Richard J.
Author_Institution :
Dept. of Electr. & Electron. Eng., Univ. of Sheffield, Sheffield, UK
Abstract :
This paper presents a novel switchable AMC surface wave antenna which can support both on-body and off-body communications in the 2.45 GHz ISM band. In the on-body mode, the antenna has a monopole-like radiation pattern with a measured gain of 2.23 dBi at +/- 49° and a null on the boresight. In the off-body mode, the antenna operates like a back-fed patch antenna. Both input impedance and radiation patterns are investigated based on numerical and experimental methods.
Keywords :
UHF antennas; antenna radiation patterns; body area networks; microstrip antennas; ISM band; back-fed patch antenna; frequency 2.45 GHz; input impedance; monopole-like radiation pattern; novel switchable AMC surface wave antenna; off-body communications; on-body communication; Antenna measurements; Antenna radiation patterns; Surface impedance; Surface waves; Switches; off-body communication; on-body communication; switchable body-centric communication;
Conference_Titel :
Antennas and Propagation (EuCAP), 2013 7th European Conference on
Conference_Location :
Gothenburg
Print_ISBN :
978-1-4673-2187-7
Electronic_ISBN :
978-88-907018-1-8
