Title :
Design of Compact Branch-Line Coupler with Coupled Resonators
Author :
Chang, Wei-Lun ; Huang, Ting-Yi ; Shen, Tze-Min ; Chen, Bo-Chun ; Wu, Ruey-Beei
Author_Institution :
Dept. of Electr. Eng. & Grad. Inst. of Commun. Eng., Nat. Taiwan Univ., Taipei
Abstract :
A compact branch-line coupler is proposed in this paper. The quarter-wavelength transmission lines are equivalent to the couplings between resonators. Thus, the conventional branch-line coupler can be transformed into a coupled-resonator network. With the proposed miniaturized resonators and coupling structure, the circuit size can be reduced by 50% and a 4% fractional bandwidth can be achieved.
Keywords :
resonators; waveguide couplers; branch-line coupler; coupled resonator network; coupling structure; miniaturized resonator; quarter-wavelength transmission lines; Bandwidth; Circuit simulation; Coupling circuits; Distributed parameter circuits; Equations; Equivalent circuits; Frequency response; Impedance; Power transmission lines; Q factor; Branch-line coupler;
Conference_Titel :
Microwave Conference, 2007. APMC 2007. Asia-Pacific
Conference_Location :
Bangkok
Print_ISBN :
978-1-4244-0748-4
Electronic_ISBN :
978-1-4244-0749-1
DOI :
10.1109/APMC.2007.4555113
