Title :
Switched pattern antenna diversity in the on-body environment
Author :
Kamarudin, M.R. ; Hall, P.S.
Author_Institution :
Sch. of Electron., Electr. & Comput. Eng. Univ. of Birmingham, Birmingham
Abstract :
The loss of on-body paths for changes in body posture has been measured using a switched beam diversity disk-loaded parasitic monopole antenna array. The antenna is designed for 2.45 GHz ISM band and is fed through a coplanar waveguide (CPW) feeding system. It has a gain of 6.7 dBi and the input return loss bandwidth is about 10%. The measurements have been made for the links between the belt and chest and for the belt to the wrist. In most of the cases, better performance is achieved with this diversity antenna compared to a reference monopole.
Keywords :
UHF antennas; antenna feeds; antenna testing; coplanar waveguides; diversity reception; monopole antenna arrays; body posture; coplanar waveguide feeding system; disk-loaded parasitic monopole antenna array; on-body environment; switched pattern antenna diversity; Antenna measurements; Belts; Circuits; Coplanar waveguides; Dielectric loss measurement; Directional antennas; Loss measurement; Mobile communication; Receiving antennas; Transmitting antennas;
Conference_Titel :
Antennas and Propagation, 2006. EuCAP 2006. First European Conference on
Conference_Location :
Nice
Print_ISBN :
978-92-9092-937-6
DOI :
10.1109/EUCAP.2006.4584961
