Antennas for Over-Body-Surface Communication at 2.45 GHz
Top Cited Papers
- 7 April 2009
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Antennas and Propagation
- Vol. 57 (4), 844-855
- https://doi.org/10.1109/tap.2009.2014525
Abstract
In this paper, the on-body performance of a range of wearable antennas was investigated by measuring |S 21| path gain between two devices mounted on tissue-equivalent numerical and experimental phantoms, representative of human muscle tissue at 2.45 GHz. In particular, the study focused on the performance of a compact higher mode microstrip patch antenna (HMMPA) with a profile as low as lambda/20. The 5- and 10-mm-high HMMPA prototypes had an impedance bandwidth of 6.7% and 8.6%, respectively, sufficient for the operating requirements of the 2.45-GHz industrial, scientific, and medical (ISM) band and both antennas offered 11-dB higher path gain compared to a fundamental-mode microstrip patch antenna. It was also demonstrated that a 7-dB improvement in path gain can be obtained for a fundamental-mode patch through the addition of a shortening wall. Notably, on-body HMMPA performance was comparable to a quarter wave monopole antenna on the same size of groundplane, mounted normal to the tissue surface, indicating that the low-profile and physically more robust antenna is a promising solution for bodyworn antenna applications.Keywords
This publication has 18 references indexed in Scilit:
- In Situ Measurement of UHF Wearable Antenna Radiation Efficiency Using a Reverberation ChamberIEEE Antennas and Wireless Propagation Letters, 2008
- Covert dual-band wearable button antennaElectronics Letters, 2006
- Characteristics of a 2.4-GHz compact shorted patch antenna in close proximity to a lossy mediumMicrowave and Optical Technology Letters, 2005
- Formulation and Characterization of Tissue Equivalent Liquids Used for RF Densitometry and Dosimetry MeasurementsIEEE Transactions on Microwave Theory and Techniques, 2004
- Channel model for wireless communication around human bodyElectronics Letters, 2004
- Numerical analysis of bodyworn UHF antenna systemsElectronics & Communication Engineering Journal, 2001
- A shoulder-mounted planar antenna for mobile radio applicationsIEEE Transactions on Vehicular Technology, 2000
- A study of the handset antenna and human body interactionIEEE Transactions on Microwave Theory and Techniques, 1996
- A new aperture admittance model for open-ended waveguidesIEEE Transactions on Microwave Theory and Techniques, 1994
- Permittivity measurements using open-ended sensors and reference liquid calibration-an uncertainty analysisIEEE Transactions on Microwave Theory and Techniques, 1992