Title :
Circularly polarized broadband annular ring array antenna for 4G communications
Author :
Shetty, Sachin ; Daryoush, Afshin S.
Author_Institution :
Dept. of Electr. & Comut. Eng., Drexel Univ., Philadelphia, PA, USA
Abstract :
Future mobile communication systems could benefit from a digitally beam formed multibeam phased array systems. The multibeams are generated and scanned using phase and amplitude weighting in digital signal processors. The broadband circularly polarized antennas are important element in this communication structure. This paper presents implementation and experimental evaluation of annular ring patch antenna leading to implementation of 2×2 sub-array antenna at S-band. The achieved directivity gain is 9 dBi over frequency of 2.1-2.7 GHz. The input 2:1 VSWR is measured over frequency range of 1 GHz.
Keywords :
4G mobile communication; antenna phased arrays; array signal processing; broadband antennas; electromagnetic wave polarisation; loop antennas; microstrip antenna arrays; multibeam antennas; 1 GHz; 2.1 to 2.7 GHz; 4G communication; annular ring patch antenna; beamformed multibeam phased array system; broadband circularly polarized antenna; digital signal processor; 4G mobile communication; Antenna arrays; Broadband antennas; Digital signal processors; Frequency; Mobile communication; Patch antennas; Phased arrays; Polarization; Signal generators;
Conference_Titel :
Military Communications Conference, 2005. MILCOM 2005. IEEE
Conference_Location :
Atlantic City, NJ
Print_ISBN :
0-7803-9393-7
DOI :
10.1109/MILCOM.2005.1606165
