Title :
Broadband circularly-polarised slot antenna array
Author :
Chen, Y.-T. ; Wu, S.-W. ; Row, J.-S.
Author_Institution :
Cheng Shiu Univ., Kaohsiung
Abstract :
A stacked slot antenna is proposed and studied to improve the performance of a circularly-polarised (CP) annular-ring slot antenna that has the disadvantages of a narrow bandwidth, a lower gain and bidirectional radiation. The stacked antenna structure is composed of a circular wide slot, a parasitic patch and a metallic reflector, and its CP radiation is excited through the proximity coupling of an L-shaped microstrip line. A 4 times 4 array using the stacked slot antenna as an element is also developed and designed at X-band. Details of the antenna design and obtained results are presented.
Keywords :
broadband antennas; electromagnetic wave polarisation; microstrip antenna arrays; slot antenna arrays; L-shaped microstrip line; antenna design; bidirectional radiation; circularly-polarised annular-ring slot antenna; metallic reflector; parasitic patch antenna; stacked slot antenna;
Journal_Title :
Electronics Letters
