Open AccessMiniaturised slot antenna for biomedical applications
Author(s) -
Xu LiJie,
Guo YongXin,
Wu Wen
Publication year - 2013
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2013.2125
Subject(s) - slot antenna , materials science , radiator (engine cooling) , bandwidth (computing) , microstrip antenna , electrical impedance , optoelectronics , microstrip , acoustics , electrical engineering , antenna (radio) , computer science , optics , engineering , physics , telecommunications
An implantable slot antenna with a miniaturised size of 139.7 mm 3 (10 × 11 × 1.27 mm) for biomedical applications is proposed. Operating at the Medical Implant Communications Service (MICS) band, miniaturisation of the antenna is realised by etching a meandered slot on the top metal with one end open. A microstrip line is utilised as excitation with a shorting connected to the radiator. In addition, two U‐shaped stubs are adopted to match the feeding impedance to 50 Ω. The antenna is simulated in a one‐layer skin model as well as in the arm of a human model and measured in skin‐mimicking tissue. Good agreements can be obtained and the measurement results show that a broad bandwidth of 28.3% (from 354 to 469 MHz) for | S 11 | less than − 10 dB can be achieved.