Title :
Microstrip-fed crossed-slot array antenna
Author :
Katayama, M. ; Yamamoto, M. ; Nojima, T. ; Itoh, K.
Author_Institution :
Graduate Sch. of Eng., Hokkaido Univ., Sapporo, Japan
Abstract :
A microstrip-fed crossed-slot array antenna having a circular polarisation is developed. First, a single crossed-slot antenna, that can radiate a circularly polarised wave in the broadside direction, is designed and its coupling level to the microstrip line is analysed. Based on this result, an eight-element crossed-slot array is designed and its characteristics are experimentally investigated at 12 GHz band. The return loss of -17 dB is obtained at the design frequency of 11.85 GHz, and the axial ratio of less than 3 dB is achieved over the fractional bandwidth of 5%.
Keywords :
electromagnetic coupling; electromagnetic wave polarisation; microstrip antenna arrays; microstrip lines; slot antenna arrays; -17 dB; 11.85 GHz; 12 GHz; axial ratio; broadside direction; circular polarisation; coupling level; design frequency; eight-element crossed-slot array; fractional bandwidth; microstrip line; microstrip-fed crossed-slot array antenna radiation;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20040196
