Title :
Antennas with Fast Beam Steering for High Spectral Efficiency in Broadband Cellular Systems
Author :
Andersson, M. ; Goransson, B. ; Skarin, I. ; From, K. ; Cheng, S. ; Ojefors, E. ; Hallbjorner, P. ; Manholm, L. ; Rydberg, A.
Author_Institution :
Ericsson AB, Goteborg
Abstract :
New mobile broadband high bit rate services will require significantly better spectral efficiency than traditional mobile voice and low bit rate services to reach a mass market. Radio base station antennas with fast beam steering in elevation and/or azimuth can significantly improve the carrier to interference ratio and hence the spectral efficiency. The carrier to interference ratio improvement of using fast beam steering in elevation is estimated using a two cell model. Electrically steerable base station antennas suitable for fast beam steering have been designed and built. The antennas are travelling wave microstrip patch arrays with varactor diode based phase shifters between the elements. The phase shifters are chosen to have very fast response time to allow beam steering on a per time slot basis
Keywords :
array signal processing; broadband antennas; cellular radio; microstrip antenna arrays; mobile antennas; phase shifters; varactors; beam steering; broadband cellular system; phase shifter; radio base station antenna; traveling wave microstrip patch array; varactor diode; Azimuth; Base stations; Beam steering; Bit rate; Broadband antennas; Interference; Microstrip antenna arrays; Microstrip antennas; Phase shifters; Phased arrays;
Conference_Titel :
Wireless Technology, 2006. The 9th European Conference on
Conference_Location :
Manchester
Print_ISBN :
2-9600551-5-2
DOI :
10.1109/ECWT.2006.280422
