Title :
Low-profile antenna with optimal polarization for 2.45 GHz on-body sensor nodes
Author :
Berg, Markus ; Tuovinen, Tommi ; Salonen, Erkki T.
Author_Institution :
Dept. of Commun. Eng., Univ. of Oulu, Oulu, Finland
Abstract :
In this paper, a low-profile on-body antenna is presented for wireless body area network (WBAN) use in 2.45 GHz frequency band. A new design philosophy, where the shape of the antenna structure forms the outer dimensions of the device and enables embedded electronics inside the antenna, is applied in the design. The antenna structure is optimized for vertical polarization and omnidirectional radiation pattern for on-body communication. A single-component impedance matching circuit is used to obtain reasonable impedance bandwidth below the fundamental resonance frequency of the antenna. The optimized antenna structure is evaluated for on-body use by using a tissue model. It is observed that the presented approach yield to high antenna performance on-body even with the total height of 6.6 mm.
Keywords :
UHF antennas; antenna radiation patterns; biological tissues; body area networks; body sensor networks; electromagnetic wave polarisation; impedance matching; omnidirectional antennas; WBAN; embedded electronics; frequency 2.45 GHz; impedance bandwidth; low-profile on-body antenna; omnidirectional radiation pattern; on-body communication; on-body sensor node; optimal polarization; single-component impedance matching circuit; tissue model; vertical polarization; wireless body area network; Antenna accessories; Antenna radiation patterns; Dipole antennas; Impedance; Wireless communication; Body area network; miniaturization; on-body antenna;
Conference_Titel :
Antennas and Propagation Conference (LAPC), 2014 Loughborough
Conference_Location :
Loughborough
DOI :
10.1109/LAPC.2014.6996474
