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

Volume

24

Issue

4

fYear

2014

fDate

Apr-14

Firstpage

236

Lastpage

238

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;

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2014.2299546

Filename

6712927