{"title":"3×3 Microstrip beam forming network for multibeam triangular array","authors":"A. N. Garcia, M. V. Isasa, Manuel Sierra Pérez","doi":"10.1109/MMW.2010.5605198","DOIUrl":null,"url":null,"abstract":"The design of a beam forming network (BFN) for a triangular cell of three elements is considered. A useful relation between phase excitation of the elements of the cell, beam direction, wavelength and distance is given. The BFN is studied based on a Butler matrix, using balanced and unbalanced hybrid couplers to obtain a three inputs and three outputs network which is used to develop a multibeam structure. A system of three equations is also presented to calculate the lengths of the transmission lines which connect the couplers of the network. These equations allow a flexible design of the network depending on the needed specifications. Finally, a microstrip BFN circuit that demonstrates the utility of the design has been developed.","PeriodicalId":145274,"journal":{"name":"2010 10th Mediterranean Microwave Symposium","volume":"30 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2010-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2010 10th Mediterranean Microwave Symposium","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/MMW.2010.5605198","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 2
Abstract
The design of a beam forming network (BFN) for a triangular cell of three elements is considered. A useful relation between phase excitation of the elements of the cell, beam direction, wavelength and distance is given. The BFN is studied based on a Butler matrix, using balanced and unbalanced hybrid couplers to obtain a three inputs and three outputs network which is used to develop a multibeam structure. A system of three equations is also presented to calculate the lengths of the transmission lines which connect the couplers of the network. These equations allow a flexible design of the network depending on the needed specifications. Finally, a microstrip BFN circuit that demonstrates the utility of the design has been developed.