Title :
Novel UWB CB-CPW butler matrix for wireless applications
Author :
Nedil, Mourad ; El Cafsi, Mohamed Aymen ; Denidni, Tayeb A. ; Gharsallah, Ali
Author_Institution :
Univ. du Quebec en Abitibi-Temiscamingue (UQAT), Val-d´Or, QC, Canada
Abstract :
A novel 4×4 ultra-wideband (UWB) Butler matrix based on using multilayer directional couplers and phase shifters is presented. The use of conductor-backed coplanar waveguide CB-CPW slot technique eliminates the crossovers needed in the conventional planar matrix leading to a significant size reduction and loss minimization. The proposed Butler matrix exhibits couplings and phase errors within -7 ± 1 dB and 11° over the entire bandwidth with a center frequency at 6.85 GHz. This matrix is suitable for ultra wideband communication systems.
Keywords :
conductors (electric); coplanar waveguides; directional couplers; matrix algebra; microwave phase shifters; slot antennas; ultra wideband communication; UWB CB-CPW butler matrix; conductor-backed coplanar waveguide CB-CPW slot technique; crossover elimination; frequency 6.85 GHz; loss minimization; multilayer directional couplers; phase errors; phase shifters; size reduction; ultra wideband communication systems; wireless applications; Butler matrices; Directional couplers; Ultra wideband technology; Wideband;
Conference_Titel :
Antennas and Propagation Society International Symposium (APSURSI), 2014 IEEE
Conference_Location :
Memphis, TN
Print_ISBN :
978-1-4799-3538-3
DOI :
10.1109/APS.2014.6905226
