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Dual‐band on‐/off‐body reconfigurable antenna for wireless body area network (WBAN) applications
Author(s) -
Tong Xuanfeng,
Liu Changrong,
Liu Xueguan,
Guo Huiping,
Yang Xinmi
Publication year - 2018
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.31088
Subject(s) - body area network , antenna (radio) , mode (computer interface) , wireless , specific absorption rate , multi band device , electrical engineering , materials science , optoelectronics , physics , telecommunications , engineering , computer science , operating system
A dual‐band dual‐mode reconfigurable antenna for on‐body and off‐body communication is presented. The antenna is operating at Industrial, Scientific, and Medical band, specifically, on‐body mode at 2.45 GHz band and off‐body mode at 5.8 GHz band. Ring slot is etched on the circular patch to form the off‐body mode with almost no influence on the on‐body mode. Three PIN diodes are utilized to act as switches between on‐body and off‐body modes. The total size of the antenna is π × 24 2 × 1.6 mm 3 . The antenna was fabricated to validate the simulation results. The antenna was measured on pork, measured results agree well with the simulated ones. The maximum measured gain of on‐body mode and off‐body mode are 0.36 dBi and 5.06 dBi, respectively. Specific absorption rate (SAR) value is less than 1.6 W/kg when the input power below 19.5 dBm which is enough for WBAN applications.