Using the branch-line directional coupler in the design of microwave bandpass filters

2005 ◽  
Vol 53 (10) ◽  
pp. 3221-3229 ◽  
Author(s):  
R. Gomez-Garcia ◽  
J.I. Alonso ◽  
D. Amor-Martin
Keyword(s):  
Directional Coupler ◽  
Bandpass Filters ◽  
Branch Line

Design of constant width branch line directional coupler for the microwave sensing application

2020 ◽  
Author(s):  
Pramod K B Rangaiah ◽  
Javad Ebrahimizadeh ◽  
Jacob Velander ◽  
Roger Karlsson ◽  
Bappaditya Mandal ◽  
...  
Keyword(s):  
Directional Coupler ◽  
Constant Width ◽  
Branch Line ◽  
Sensing Application

W-band waveguide 3dB directional coupler based on E-plane branch line bridge

2013 ◽  
Author(s):  
Pei Zheng ◽  
Hou-Jun Sun ◽  
Meng-Jia Luo ◽  
Zhi-Lei Wen ◽  
Hong Deng
Keyword(s):  
Directional Coupler ◽  
Branch Line ◽  
W Band

scholarly journals Monolithic Miniaturized Differentially-Fed Branch-Line Directional Coupler in GaAs Monolithic Technology

Electronics ◽  
2020 ◽  
Vol 9 (3) ◽  
pp. 446
Author(s):  
Slawomir Gruszczynski ◽  
Robert Smolarz ◽  
Changying Wu ◽  
Krzysztof Wincza
Keyword(s):  
Directional Coupler ◽  
Center Frequency ◽  
Semiconductor Technology ◽  
Coupled Line ◽  
Full Size ◽  
Branch Line ◽  
Power Split ◽  
24 Ghz ◽  
Measured Power

In this paper, a design of a miniaturized branch-line directional coupler is presented. The coupler is designed with balanced coupled-line sections, which are electrically shortened by the application of lumped capacitors. To measure the parameters of the coupler, appropriate baluns have been designed. The coupler has been designed in a GaAs PH25 UMS (united monolithic semiconductor) technology with the center frequency of 24 GHz. The measured power split equals 3 dB with the transmission/coupling imbalance not exceeding 0.6 dB. The measured return losses equal 17 dB at the center frequency, whereas the isolation reaches 17 dB. The fabricated coupler‘s size equals 630 um × 487 um, which is 0.19 of the full size of the directional coupler in the chosen technology (1191 um × 1170 um).

A Miniaturized Branch-Line Directional Coupler on Low Temperature Cofired Ceramic Board

2001 ◽  
Author(s):  
E. Loskot ◽  
S. Leppavuori ◽  
A. Kourbanov ◽  
I. Vendik ◽  
A. Lapshin ◽  
...  
Keyword(s):  
Low Temperature ◽  
Directional Coupler ◽  
Branch Line

Theoretical analysis of a branch line quantum directional coupler

1994 ◽  
Vol 65 (19) ◽  
pp. 2439-2441 ◽  
Author(s):  
O. Vanbésien ◽  
D. Lippens
Keyword(s):  
Theoretical Analysis ◽  
Directional Coupler ◽  
Branch Line
Sign in / Sign up

Export Citation Format

Share Document