Title :
A compact directional coupler for use in beam-forming networks
Author :
Gandini, Erio ; Ettorre, Mauro ; Sauleau, Ronan ; Grbic, Anthony
Author_Institution :
Inst. d´´Electron. et de Telecommun. de Rennes (IETR), Univ. de Rennes 1, Rennes, France
Abstract :
A lumped-element directional coupler with arbitrary output amplitude and phase distributions is introduced. Design equations for the coupler are derived and reported here. The design is significantly smaller than transmission-line based structures directional couplers. During the presentation the use of the network as a building block for a Butler matrix will be shown.
Keywords :
array signal processing; directional couplers; matrix algebra; Butler matrix; arbitrary output amplitude; beamforming network; compact directional coupler; lumped-element directional coupler; phase distribution; transmission-line based structure; Butler matrix; Directional couplers; Microwave circuits; Transmission line matrix methods; Beam forming network; directional coupler; lumped-element structure;
Conference_Titel :
Antennas and Propagation Society International Symposium (APSURSI), 2012 IEEE
Conference_Location :
Chicago, IL
Print_ISBN :
978-1-4673-0461-0
DOI :
10.1109/APS.2012.6349232
