Title :
Introduction of multiple nulls in an omnidirectional pattern using circular arrays
Author :
Abele, J. ; Joubert, J. ; Odendaal, J.W.
Author_Institution :
Inst. fur Hochstfrewuenztechnik und Elektronik, Karlsruhe Univ., Germany
Abstract :
Omnidirectional antennas with controllable nulls are desirable in cellular communication systems. The introduction of nulls in the pattern of a general antenna array has been widely discussed. However, for omnidirectional patterns these techniques disturb the pattern and introduce undesirable ripple. A synthesis procedure is proposed for the introduction of multiple nulls with controllable ripple in an omnidirectional pattern of a circular array
Keywords :
antenna arrays; antenna radiation patterns; cellular radio; telecommunication control; antenna array; cellular communication systems; circular arrays; controllable nulls; multiple nulls; omnidirectional antennas; omnidirectional pattern; synthesis procedure; Adaptive arrays; Antenna arrays; Antenna radiation patterns; Communication system control; Control system synthesis; Control systems; Mobile communication; Multiaccess communication; Null value; Power control;
Conference_Titel :
Communications and Signal Processing, 1998. COMSIG '98. Proceedings of the 1998 South African Symposium on
Conference_Location :
Rondebosch
Print_ISBN :
0-7803-5054-5
DOI :
10.1109/COMSIG.1998.736982
