Title :
Broadband printed ring-slot array with circular polarisation
Author :
Row, J.-S. ; Sim, C.Y.D. ; Lin, K.-W.
Author_Institution :
Dept. of Electr. Eng., Nat. Changhua Univ. of Educ., Chang-Hua
Abstract :
A novel design of a printed ring-slot antenna with circular polarisation (CP) is first proposed. The CP radiation of the slot antenna is achieved by a series microstrip-line feed configuration. Using the single CP slot antenna as an array element, the 1times2 and 2times2 slot arrays are constructed and measured. To obtain wider CP bandwidth, phase sequential rotation technique is applied to the feed network of these printed slot arrays. The experimental results show that the 2times2 slot array antenna is capable of 15% bandwidth for an axial ratio of less than 3 dB
Keywords :
antenna feeds; antenna radiation patterns; broadband antennas; electromagnetic wave propagation; microstrip antenna arrays; microstrip lines; slot antenna arrays; axial ratio; bandwidth; broadband printed ring-slot antenna array; circular polarisation; microstrip line feed configuration; phase sequential rotation technique;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20057637
