Title :
Optimizing the performance of branch-line couplers using open ended stubs
Author :
Gomha, Siddig ; El-Rabaie, El-Sayed M. ; Shalaby, Abdel Aziz T.
Author_Institution :
Fac. of Electron. Eng., Minufiya Univ., Menouf, Egypt
Abstract :
In this paper we use open ended stubs on transmission line to design compact BLC by using planner microstrip technique. We will derive in detail the closed formulas for the BLC design. The effect of changing the number of open ended stubs on the coupler performance is investigated. It has been shown that the number of open ended stubs used for optimum design depends mainly on the center frequency range used. Also it has been shown that at frequency range (1-2 GHz) there are a big difference on the design area of the coupler for both the conventional and open ended stubs. The paper presents a comparative study between the performance of the BLC using both open ended and conventional approach.
Keywords :
microstrip couplers; passive networks; branch-line couplers; open ended stubs; planner microstrip technique; transmission line; Couplers; Equations; Impedance; Mathematical model; Microstrip; Microwave theory and techniques; Power transmission lines; Branch-Line Couplers (BLC); Open Ended Stubs; Planar Microstrip;
Conference_Titel :
Computing, Electrical and Electronics Engineering (ICCEEE), 2013 International Conference on
Conference_Location :
Khartoum
Print_ISBN :
978-1-4673-6231-3
DOI :
10.1109/ICCEEE.2013.6633963
