Title :
Compact ultra-wideband chip antenna using square spiral slot
Author :
Kim, June-hyong ; Lee, Hong-Min
Author_Institution :
Dept. of Electron. Eng., Kyonggi Univ., Suwon, South Korea
Abstract :
In this paper, compact ultra wide band (UWB) chip antenna using square spiral slot and CPW (coplanar waveguide) feed are proposed. A square spiral slot structure is introduced for resonance of medium band operation. The two corner open slots of the CPW feeder line are modified for impedance matching and lower/higher band operation. The proposed antenna has a compact size (8mm × 15mm) and it is etched on the FR-4 (relative dielectric constant = 4.4, thickness =0.8 mm) dielectric substrate. The measured impedance bandwidth (VSWR¿ 2 ) and gain of the proposed antenna is 6.2 GHz (4.27 GHz ~ 10.47 GHz) and 5.4 dBi, respectively. Measured result show good impedance matching and radiation pattern over the interesting frequency bands. It can be applied to antenna of UWB wireless communication system.
Keywords :
coplanar waveguides; impedance matching; spiral antennas; ultra wideband antennas; ultra wideband communication; CPW feeder line; UWB chip antenna; UWB wireless communication system; bandwidth 4.27 GHz to 10.47 GHz; compact ultra-wideband chip antenna; coplanar waveguide; impedance matching; size 0.8 mm; square spiral slot; Antenna feeds; Antenna measurements; Coplanar waveguides; Dielectric measurements; Impedance matching; Impedance measurement; Slot antennas; Spirals; Ultra wideband antennas; Ultra wideband technology; CPW; Ultra Wideband (UWB); chip antenna; compact antenna; square spiral slot;
Conference_Titel :
Microwave Conference, 2009. APMC 2009. Asia Pacific
Conference_Location :
Singapore
Print_ISBN :
978-1-4244-2801-4
Electronic_ISBN :
978-1-4244-2802-1
DOI :
10.1109/APMC.2009.5384213
