Title :
Design of dual-band transmission line with flexible phase shifts and its applications
Author :
Han Ren ; Jin Shao ; Mi Zhou ; Arigong, Bayaner ; Jun Ding ; Hualiang Zhang
Author_Institution :
Dept. of Electr. Eng., Univ. of North Texas, Denton, TX, USA
Abstract :
A novel dual-band transmission line with flexible phase shifts is presented. To realise dual-band operations, the proposed transmission line is constructed by series-connected coupled lines and open-ended stubs. Using this structure, flexible characteristic impedances and electrical lengths can be designed to operate at two frequencies. Moreover, the proposed dual-band transmission line features a wide range of realisable frequency ratios and a flexible structure. For practical applications, a planar dual-band 3 dB branch-line coupler operating at 2/5.2 GHz is designed using the proposed dual-band transmission line. The simulation and measurement results agree very well with the design theory.
Keywords :
UHF circuits; coupled circuits; coupled transmission lines; microwave circuits; phase shifters; dual-band transmission line; flexible phase shift; frequency 2 GHz; frequency 5.2 GHz; gain 3 dB; open-ended stub; planar dual-band branch-line coupler; series-connected coupled line;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2014.4140
