Novel Ultra-Wideband CB-CBW Butler matrix

Author

Nedil, Mourad ; Habib, Adnane M. ; Denidni, Tayeb A.

Author_Institution

INRS-EMT, Montreal, QC

fYear

2008

fDate

5-11 July 2008

Firstpage

1

Lastpage

4

Abstract

An ultra-wideband 4x4 CB-CPW Butler matrix has been designed using a two-layer structure. In the proposed design, a combination of a CB-CPW slot-coupled directional coupler and UWB crossover were employed to widen the bandwidth of the Butler matrix and reducing the number of crossovers. Simulated results show that a bandwidth of about 4 GHz was achieved. Furthermore, the proposed matrix has been used to form a beamforming system, resulting in four orthogonal beams at 5.8 GHz. With these features, the proposed Butler matrix is suitable for UWB-beamforming antenna-array applications.

Keywords

adaptive antenna arrays; directional couplers; slot antenna arrays; ultra wideband antennas; CB-CPW slot-coupled directional coupler; UWB crossover; UWB-beamforming antenna-array; smart antennas; spatial filtering; ultra-wideband CB-CBW Butler matrix; Bandwidth; Butler matrix; Coplanar waveguides; Directional couplers; Filtering; Insertion loss; Narrowband; Nonhomogeneous media; Transmission line matrix methods; Ultra wideband technology;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2008. AP-S 2008. IEEE

Conference_Location

San Diego, CA

Print_ISBN

978-1-4244-2041-4

Electronic_ISBN

978-1-4244-2042-1

Type

conf

DOI

10.1109/APS.2008.4619181

Filename

4619181