Influence of the human body on a new coplanar-fed Ultra-Wideband antenna

Author

Koohestani, M. ; Pires, N. ; Skrivervik, A.K. ; Moreira, A.A.

Author_Institution

Inst. de Telecomun., Univ. Tec. de Lisboa, Lisbon, Portugal

fYear

2012

fDate

26-30 March 2012

Firstpage

316

Lastpage

319

Abstract

A new coplanar-fed planar monopole antenna is presented for off-body Ultra-Wideband wearable communication systems. The antenna structure comprises a dome-topped, bowl-shaped radiating element and a 50 Ω coplanar feed line for excitation. Its impedance bandwidth is greater than 118%, from 3.05 to beyond 12 GHz, based on a reflection coefficient smaller than -10 dB criterion. The influence of the human body on the operation of this antenna was studied. In particular, a simplified geometry of a human limb was found to be accurate enough for use in input reflection coefficient simulations. The limb tissues were modelled as frequency-dependent materials. Measurement results show the suitability of the simplified geometry to simulate the antenna in the proximity of a human limb.

Keywords

antenna feeds; antenna radiation patterns; monopole antennas; planar antennas; ultra wideband antennas; wearable antennas; bowl-shaped radiating element; coplanar feed line; coplanar-fed planar monopole antenna; coplanar-fed ultrawideband antenna; frequency-dependent materials; human body; human limb geometry; human limb proximity; input reflection coefficient simulations; limb tissues; off-body ultrawideband wearable communication systems; resistance 50 ohm; Antenna measurements; Bandwidth; Impedance; Ultra wideband antennas; Ultra-Wideband antenna; coplanar waveguide (CPW)-fed; human body effects;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation (EUCAP), 2012 6th European Conference on

Conference_Location

Prague

Print_ISBN

978-1-4577-0918-0

Electronic_ISBN

978-1-4577-0919-7

Type

conf

DOI

10.1109/EuCAP.2012.6205976

Filename

6205976