Title :
A wideband microstrip array antenna with unique dumbbell shaped aperture coupled radiating elements
Author :
Sharma, Ajay K. ; Agrawal, Shyam K. ; Rajpurohit, Dharmendra S. ; Singh, Raghvendra ; Mittal, Ashok
Author_Institution :
Central Res. Lab., Bharat Electron. Limited, Ghaziabad
Abstract :
A wideband 2times2 planar microstrip antenna array with dual circular polarization is proposed for serving mobile satellite communications. The basic array element is an optimized diagonal slotted diamond shaped dumbbell aperture fed patch antenna for improved axial ratio and impedance bandwidth performance. A 2:1 impedance bandwidth of 23% and 3 dB axial ratio bandwidth of 19.2% with a circular directivity of 14.2 dBi is achieved with the optimized array structure. The above features make it an ideal circularly polarized structure for addressing wideband applications as required in mobile satellite communication systems
Keywords :
antenna feeds; aperture antennas; broadband antennas; microstrip antenna arrays; mobile satellite communication; planar antenna arrays; polarisation; slot antenna arrays; array element; axial ratio bandwidth; circular directivity; circularly polarized structure; dual circular polarization; dumbbell aperture fed patch antenna; impedance bandwidth; mobile satellite communication systems; optimized array structure; optimized diagonal slotted diamond shaped antenna; unique dumbbell shaped aperture coupled radiating elements; wideband 2times2 planar microstrip antenna array; Aperture antennas; Aperture coupled antennas; Bandwidth; Broadband antennas; Impedance; Microstrip antenna arrays; Microstrip antennas; Mobile antennas; Polarization; Satellite communication;
Conference_Titel :
Antennas and Propagation Society International Symposium 2006, IEEE
Conference_Location :
Albuquerque, NM
Print_ISBN :
1-4244-0123-2
DOI :
10.1109/APS.2006.1710672
