Title :
A Broadband 3 dB Tandem Coupler Utilizing Right/Left Handed Transmission Line Sections
Author :
Staszek, Kamil ; Sorocki, Jakub ; Kaminski, Piotr ; Wincza, Krzysztof ; Gruszczynski, Slawomir
Author_Institution :
AGH Univ. of Sci. & Technol., Cracow, Poland
Abstract :
A new type of broadband 3 dB tandem coupler has been proposed featuring frequency characteristics of the resulting coupling similar to those of a classic 3 dB two-section asymmetric coupled-line directional coupler. The coupler is composed of two loosely coupled-line sections having electrical lengths close to quarter-wavelength connected by right-handed and left-handed transmission line sections. Theoretical analysis and design equations have been presented with an exemplary realization. Measurements of the manufactured tandem coupler operating at f0 = 1 GHz having wide operational bandwidth have been shown to validate the presented analysis.
Keywords :
UHF couplers; coupled transmission lines; directional couplers; microwave metamaterials; broadband tandem coupler; design equations; electrical lengths; frequency 1 GHz; frequency characteristics; loosely coupled-line sections; manufactured tandem coupler measurements; metamaterials; quarter-wavelength; right-left handed transmission line sections; two-section asymmetric coupled-line directional coupler; Bandwidth; Broadband communication; Couplings; Directional couplers; Power transmission lines; Transmission line measurements; 3 dB coupled-line directional couplers; Left-handed transmission lines; metamaterials; tandem connection;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2014.2299546
