{"title":"Introduction of multiple nulls in an omnidirectional pattern using circular arrays","authors":"J. Abele, J. Joubert, J. Odendaal","doi":"10.1109/COMSIG.1998.736982","DOIUrl":null,"url":null,"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.","PeriodicalId":294473,"journal":{"name":"Proceedings of the 1998 South African Symposium on Communications and Signal Processing-COMSIG '98 (Cat. No. 98EX214)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1998-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of the 1998 South African Symposium on Communications and Signal Processing-COMSIG '98 (Cat. No. 98EX214)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/COMSIG.1998.736982","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
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.