Title :
A novel dual-band rat-race coupler
Author :
Arigong, Bayaner ; Jin Shao ; Mi Zhou ; Jun Ding ; Hyoung Soo Kim ; Hualiang Zhang
Author_Institution :
Electr. Eng. Dept., Univ. of North Texas, Denton, TX, USA
Abstract :
In this paper, a new dual-band 3dB 180° hybrid ring coupler is presented. The proposed coupler is composed of multiple transmission lines with identical characteristic impedance and electrical length and a dual-band 180° phase shifter. Based on the even-odd analysis, it is found that the proposed coupler can support a wide range of frequency ratio since its realization is mainly limited by the implementation of the dual-band 180° phase shifter. To prove the design concept, full-wave electromagnetic simulations are performed and an experimental prototype is fabricated. The measurement results match well with the theoretical and numerical results.
Keywords :
coupled transmission lines; directional couplers; electromagnetic coupling; hybrid integrated circuits; microwave phase shifters; dual band 180° phase shifter; dual band hybrid ring coupler; dual band rat-race coupler; even-odd analysis; frequency ratio; full wave electromagnetic simulation; identical characteristic impedance; transmission lines; Directional couplers; Dual band; Equations; Mathematical model; Phase shifters; Power transmission lines; Directional coupler; half-wavelength phase shifter; hybrid ring coupler; microwave component;
Conference_Titel :
Wireless and Microwave Technology Conference (WAMICON), 2014 IEEE 15th Annual
Conference_Location :
Tampa, FL
DOI :
10.1109/WAMICON.2014.6857737
