Title :
Miniaturized Rat Race Coupler With Suppression of Spurious Passband
Author :
Kuo, Jen-Tsai ; Wu, Juo-Shiuan ; Chiou, Yi-Chyun
Author_Institution :
Dept. of Commun. Eng., Nat. Chiao Tung Univ., Hsinchu
Abstract :
A new hybrid ring coupler design is devised for circuit miniaturization based on the periodic stepped-impedance ring resonator structure. The circuit has an area of 21.5% of a conventional rat race coupler and no passband up to the sixth harmonic of the design frequency. The designs are validated by comparing measured four-port parameters with the simulated results
Keywords :
coupled circuits; interference suppression; microwave integrated circuits; multiport networks; resonators; hybrid ring coupler design; periodic stepped-impedance ring resonator structure; rat race coupler; spurious passband suppression; Circuit simulation; Coupling circuits; Distributed parameter circuits; Frequency; Helium; Impedance; Optical ring resonators; Passband; Periodic structures; Power transmission lines; Directional coupler; miniaturization; rat race; ring hybrid; stepped-impedance;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2006.887254
