Title :
Non-uniform tapered ultra wideband directional coupler design and modern ultra wideband balun integration
Author :
Salem, Paul ; Wu, Chen ; Yagoub, Mustapha C E
Author_Institution :
Univ. of Ottawa, Ottawa
Abstract :
Symmetrical directional couplers have been used as part of the feed network for various wideband antennas. In many cases they are used in conjunction with baluns to allow for polarization diversity. The design and optimization of a nonuniform tapered ultra wideband 90deg coupler is presented as well as a novel approach to the integration of the coupler and the connecting baluns for their corresponding antennas. Such a design allows for enhanced return loss and isolation performance while creating a simple manufacturing layout which results in a single robust design.
Keywords :
baluns; directional couplers; ultra wideband antennas; nonuniform tapered ultra wideband directional coupler; polarization diversity; symmetrical directional couplers; ultra wideband balun integration; wideband antennas; Antenna feeds; Broadband antennas; Design optimization; Directional couplers; Directive antennas; Impedance matching; Joining processes; Polarization; Ultra wideband antennas; Ultra wideband technology; Baluns; directional couplers; non-uniform line techniques; sinuous antenna;
Conference_Titel :
Microwave Conference, 2006. APMC 2006. Asia-Pacific
Conference_Location :
Yokohama
Print_ISBN :
978-4-902339-08-6
Electronic_ISBN :
978-4-902339-11-6
DOI :
10.1109/APMC.2006.4429536
