Title :
DBF array antenna systems at 8.45 GHz
Author :
Mori, K. ; Inoue, Y. ; Minseok Kim ; Ichige, K. ; Arai, H.
Author_Institution :
Div. of Electr. & Comput. Eng., Yokohama Nat. Univ., Japan
Abstract :
In adaptive array antenna techniques, the digital beamforming (DBF) array antenna is expected to play an important role in next generation mobile communication systems. The DBF array antenna is a kind of adaptive array antenna, which can realize the desired beamforming by adjusting the weight parameter of each antenna element. The received analog signals are first converted to digital ones, and then the antenna pattern is computed in a desired form by digital signal processing. We demonstrate a DBF array antenna systems at 8.45 GHz. This frequency band is a candidate for next generation wireless telecommunication in Japan. We describe two different concepts for a DBF array antenna. One is a compact receiver for a mobile terminal with direct conversion. Another is a triple conversion superheterodyne receiver to examine directions-of-arrival (DOA) and beamforming. We also demonstrate an A/D converter module for these receivers for online processing.
Keywords :
adaptive antenna arrays; analogue-digital conversion; array signal processing; mobile antennas; mobile radio; radio receivers; superheterodyne receivers; 8.45 GHz; A/D converter module; DOA; adaptive array antenna; antenna pattern; compact receiver; digital beamforming; digital signal processing; directions-of-arrival; mobile communication systems; mobile terminal; online processing; superheterodyne receiver; Adaptive arrays; Analog computers; Antenna arrays; Array signal processing; Digital signal processing; Mobile antennas; Mobile communication; Receiving antennas; Signal processing; Telecommunication computing;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2001. IEEE
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-7803-7070-8
DOI :
10.1109/APS.2001.960072
