Title :
Optimaization of a wideband multisection quadrature directional coupler
Author :
Tayel, Mazhar Basyouni ; Alhakami, Hani Saad
Author_Institution :
Fac. of Eng., 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. 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; directional couplers; equivalent circuits; microwave circuits; S-parameter; branch line directional coupler; distributed backward line; distributed microwave circuit; gain 3 dB; lumped element equivalent circuit model; lumped-element directional coupler; optimization; wideband multisection quadrature directional coupler; Scattering parameters; Advanced Design System (ADS); Directional coupler; lumped-element; multisection coupler;
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
