Title :
Suppression of multipath and other interferers using electronically variable time delay elements
Author :
Askew, Robert E. ; Mawhinney, Daniel D. ; Sterzer, Fred
Author_Institution :
MMTC Inc., Princeton, NJ, USA
Abstract :
A circuit that uses electronically variable time delay elements to suppress interfering signals on the basis of their difference-in-time-of-arrival at two spatially separated antennas is described. 40 dB of suppression of wideband interferers was demonstrated in cases where strong, wideband interferers overlapped the frequency of the desired signal, and where the difference in the difference-in-time-of-arrival of interferers and desired signals was as small as 30 picoseconds
Keywords :
delay circuits; interference suppression; receiving antennas; difference-in-time-of-arrival; electronically variable time delay elements; interfering signals suppression; multipath suppression; receiving antennas; spatially separated antennas; wideband interferers; Broadband antennas; Circuits; Degradation; Delay effects; Directive antennas; Frequency; Interference cancellation; Interference suppression; Power dividers; Signal processing;
Conference_Titel :
Telesystems Conference, 1994. Conference Proceedings., 1994 IEEE National
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-1869-2
DOI :
10.1109/NTC.1994.316685
