Title :
The development of smart antennas
Author_Institution :
Dept. Electr. & Comput. Eng., Utah State Univ., Logan, UT, USA
Abstract :
A smart or adaptive antenna is an antenna that modifies its receive or transmit characteristics in order to enhance the antenna´s performance. The performance modification results from purposely modifying the signal cancellations that occur. Smart antennas are important for reducing the deleterious effects of intentional jamming signals, unintentional co-channel interference and multipath. These antennas were first known as sidelobe cancelers then adaptive antennas and more recently smart antennas. A smart antenna is composed of two or more antennas. The amplitude and/or time delay (phase) of the signals received by all the antennas are modified then combined in such a manner as to improve reception of the desired signal. This paper presents the development of smart antennas from sidelobe cancelers in the 1950s until today.
Keywords :
adaptive antenna arrays; array signal processing; interference suppression; adaptive antenna arrays; amplitude; cochannel interference; jamming; multipath; performance enhancement; receive characteristics; sidelobe cancelers; signal cancellations; smart antennas; time delay; transmit characteristics; Adaptive arrays; Antenna arrays; Covariance matrix; Delay effects; Directional antennas; Interchannel interference; Jamming; Output feedback; Receiving antennas; Transmitting antennas;
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.2001.959397
