Title :
Wideband Directional Microstrip Antennas fed by CPW-loop Combination
Author :
Nasimuddin ; Chen, Zhi Ning
Author_Institution :
A*STAR, Singapore
Abstract :
A new coplanar waveguide (CPW)-loop combination feed wideband directional and compact multilayer microstrip antenna is presented for UWB applications. The antenna consists of two dielectric layers; CPW-loop on the ground plane, main patch on the middle layer and four asymmetric parasitic patches on the upper layer. The feed consists of a CPW structure and a loop on a ground plane. The antenna has a measured 10dB return loss bandwidth of 36% (3.12GHz to 4.51GHz) and maximum gain more than 5dBi over the 48% (3.0GHz to 4.90GHz). The total thickness of antennas is 4.65 mm. The proposed technique is very useful for designing wide bandwidth antennas on multilayer printed circuit board.
Keywords :
antenna feeds; coplanar waveguide components; microstrip antennas; ultra wideband communication; coplanar waveguide-loop combination feed; ground plane; multilayer dielectric layers; parasitic patches; wideband directional microstrip antennas; Antenna feeds; Antenna measurements; Bandwidth; Broadband antennas; Coplanar waveguides; Dielectric loss measurement; Directive antennas; Microstrip antennas; Nonhomogeneous media; Ultra wideband antennas; CPW feed; UWB; loop coupled; microstrip antennas; multilayer dielectric layers; wideband;
Conference_Titel :
Ultra-Wideband, 2007. ICUWB 2007. IEEE International Conference on
Conference_Location :
Singapore
Print_ISBN :
978-1-4244-0521-3
Electronic_ISBN :
978-1-4244-0521-3
DOI :
10.1109/ICUWB.2007.4381035
