Branch-Line Couplers With Arbitrary Coupling Value Through the Electrical Length Variation With Fixed Line Impedances

A new method is presented to obtain arbitrary coupling levels of the branch-line couplers through the simple modification of the 3-dB coupler. It is shown that the coupling of the conventional 3-dB branch-line coupler can be adjusted to arbitrary values by varying the electrical length of the branch...

Full description

Saved in:
Bibliographic Details
Published inIEEE microwave and wireless components letters Vol. 27; no. 11; pp. 968 - 970
Main Authors Lee, Jaegook, Lee, Jongchul, Park, Myun-Joo
Format Journal Article
LanguageEnglish
Published IEEE 01.11.2017
Subjects
Arbitrary coupling level
branch-line coupler
Couplers
Impedance
Microwave circuits
unequal power division
Wireless communication
Online AccessGet full text

Cover

More Information
Summary:A new method is presented to obtain arbitrary coupling levels of the branch-line couplers through the simple modification of the 3-dB coupler. It is shown that the coupling of the conventional 3-dB branch-line coupler can be adjusted to arbitrary values by varying the electrical length of the branches without changing the impedances. A very wide range of coupling values can easily be obtained using the same line impedances as the conventional 3-dB couplers based on the proposed method.
ISSN:1531-1309
1558-1764
DOI:10.1109/LMWC.2017.2750084