Title :
The required resolution of A/D for null beamforming in a DBF antenna
Author :
Takahashi, T. ; Chiba, I. ; Karasawa, Y.
Author_Institution :
ATR Opt. & Radio Commun. Res. Labs., Kyoto, Japan
Abstract :
Presents a study of the required resolution to reject interference in a DBF antenna system for mobile satellite communications. The results obtained showed that the degradation of the null depth corresponded to the increase in the quantization noise caused by reducing the A/D converter word length. As the result of the paper, the A/D converter word length can be determined by the required null depth.<>
Keywords :
analogue-digital conversion; antenna arrays; antenna radiation patterns; array signal processing; interference suppression; land mobile radio; mobile antennas; mobile satellite communication; quantisation (signal); radiofrequency interference; signal resolution; A/D converter word length; DBF antenna; degradation; digital beamforming antenna; interference rejection; mobile satellite communications; null depth; quantization noise; required resolution; Antenna arrays; Antenna radiation patterns; Array signal processing; Baseband; Degradation; Interference; Noise reduction; Phased arrays; Quantization; Radio communication;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1994. AP-S. Digest
Conference_Location :
Seattle, WA, USA
Print_ISBN :
0-7803-2009-3
DOI :
10.1109/APS.1994.407823
