Title :
A Low-Profile IR-UWB Antenna With Ring Patch for WBAN Applications
Author :
Wonhong Jeong ; Jinpil Tak ; Jaehoon Choi
Author_Institution :
Dept. of Electron. & Comput. Eng., Hanyang Univ., Seoul, South Korea
Abstract :
A compact ultrawideband (UWB) antenna for on- body communications is proposed herein. The antenna consists of a mono- cone and a shorted ring patch. By using a ring patch with four shorting pins, the proposed antenna operates at TM41 resonance mode in the low-frequency band and achieves a compact low-profile structure with monopole-like radiation characteristics. The antenna has overall dimensions of 64 mm × 64 mm × 7 mm (0.64 λ0 × 0.64 λ0 × 0.07 λ0at 3 GHz) in the impulse radio UWB (3.1 GHz - 10.6 GHz) band and a 10-dB return loss bandwidth of 121.1% in the range from 2.8 to 11.4 GHz. The antenna performance was simulated and measured in free space and on a homogeneous human equivalent phantom to account for the human body effect. The results show that the antenna characteristics are relatively stable regardless of the existence of a human phantom.
Keywords :
antenna radiation patterns; microwave antennas; ultra wideband antennas; ultra wideband communication; TM41 resonance mode; WBAN applications; compact ultrawideband antenna; frequency 2.8 GHz to 11.4 GHz; homogeneous human equivalent phantom; low-frequency band; low-profile IR-UWB antenna; monopole-like radiation characteristics; on- body communications; Antenna measurements; Bandwidth; Frequency measurement; Phantoms; Ultra wideband antennas; ${rm TM}_{41}$ mode; Impulse radio (IR); monopole; on-body antenna; phantom; ultrawideband (UWB) antenna; wireless body area network (WBAN);
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2015.2411263
