Title :
Optimization and compact a wideband 3dB multisection quadrature coupler for 900MHz
Author :
Tayel, Mazhar Basyouni ; Alhakami, Hani Saad
Author_Institution :
EED, Alexandria Univ., Alexandria, Egypt
Abstract :
In this paper, lumped elements equivalent circuit models are proposed for the distributed backward line and branch line directional couplers. Firstly, the conversion topologies have been developed from distributed microwave circuits to the lumped element circuits. Secondly, as applications of the proposed topologies, two 3dB lumped-element directional couplers have been generated from their distributed versions. It was found that the derived S-parameters for the lumped-element couplers agree well with those of the corresponding distributed ones at the center frequency as well as within the bandwidth.
Keywords :
S-parameters; UHF couplers; directional couplers; equivalent circuits; S-parameters; branch line directional couplers; distributed backward line couplers; distributed microwave circuits; frequency 2.5 GHz; lumped element equivalent circuit models; lumped-element directional couplers; wideband multisection quadrature coupler; Advanced Design System (ADS); Directional couplers; lumped-element; multisection couplers;
Conference_Titel :
Mobile IT Convergence (ICMIC), 2011 International Conference on
Conference_Location :
Gyeongsangbuk-do
Print_ISBN :
978-1-4577-1128-2
Electronic_ISBN :
978-89-88678-61-9
