Implantable Wideband Low-SAR Antenna With C-Shaped Coupled Ground

Author

Chi-Lin Tsai ; Kuan-Wei Chen ; Chin-Lung Yang

Author_Institution

Nat. Synchrotron Radiat. Res. Center, Hsinchu, Taiwan

Volume

14

fYear

2015

fDate

2015

Firstpage

1594

Lastpage

1597

Abstract

This letter proposes an implantable wideband low specific absorption rate (SAR) antenna with a C-shaped, coupled ground design to cover the MedRadio band. This antenna is composed of a sigma-shaped monopole radiator and novel C-shaped design, which excites two modes and dominates the near E-field distribution evenly to achieve a low SAR. The proposed antenna is compact and measures only 560 mm³. The maximal peak value of the average SAR is 161 W/kg at an incident power of 1 W, and the SAR averaged over 1 g of tissue is lower than 1.6 W/kg when the maximal incident power of the proposed antenna is less than 10.1 mW, thus satisfying IEEE C95.1-1999 standards.

Keywords

broadband antennas; monopole antennas; C-shaped coupled ground; E-field distribution; IEEE C95.1-1999 standard; MedRadio band; implantable wideband low-SAR antenna; incident power; power 1 W; sigma-shaped monopole radiator; specific absorption rate antenna; Antenna measurements; Bandwidth; Broadband antennas; Couplings; Impedance; Substrates; Implantable antenna; specific absorption rate; wideband;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2015.2413839

Filename

7061447