Abstract
A microstrip monopole antenna backed with a novel uniplanar compact electromagnetic bandgap (UC-EBG) structure for 2.4 GHz wireless body area network applications is proposed here. The proposed antenna has a size reduction of 50% when the number of EBG array is optimised from 3 × 4 to 2× 3, while the radiation performance is almost invariable at the same time. The operating frequency band under different conditions has the capability of covering the 2.4-2.4835 GHz industrial, scientific, and medical band. Due to the addition of 2×3 UC-EBG on the back, the radiation patterns become unidirectional, and the measured average gain increases from 2.1 to 5.6 dB. Meanwhile, the cross-polarisation of the monopole antenna can be suppressed prominently by the EBG array. The simulated specific absorption rate values are 0.0536 W/kg under 1 g standard and 0.0296 W/kg under 10 g standard, which are far below the limitation of USA and Europe. These results can manifest the reliable wearable performance of the proposed antenna.
| Original language | English |
|---|---|
| Pages (from-to) | 2319-2323 |
| Number of pages | 5 |
| Journal | IET Microwaves, Antennas and Propagation |
| Volume | 13 |
| Issue number | 13 |
| DOIs | |
| Publication status | Published - 30 Oct 2019 |
| Externally published | Yes |
Keywords
- Antenna radiation patterns
- EBG array
- Europe
- UC-EBG structure
- UHF antennas
- USA
- WBAN
- body area networks
- cross-polarisation
- frequency 2.4 GHz to 2.4835 GHz
- industrial-scientific-medical band
- mass 1.0 g
- mass 10.0 g
- microstrip antennas
- microstrip monopole antenna
- monopole antennas
- photonic band gap
- planar antennas
- radiation performance
- unidirectional radiation patterns
- uniplanar compact electromagnetic bandgap structure
- wireless body area network