Coupled line trans-directional coupler with improved power distribution and phase performance

2017 ◽  
Author(s):  
Hongmei Liu ◽  
Shaojun Fang ◽  
Zhongbao Wang ◽  
Te Shao
Keyword(s):  
Power Distribution ◽  
Directional Coupler ◽  
Coupled Line

scholarly journals Differential Bi-Level Microstrip Directional Coupler with Equalized Coupling Coefficients for Directivity Improvement

Electronics ◽  
2020 ◽  
Vol 9 (4) ◽  
pp. 547
Author(s):  
Slawomir Gruszczynski ◽  
Robert Smolarz ◽  
Krzysztof Wincza
Keyword(s):  
Coupling Coefficient ◽  
Dielectric Layer ◽  
Directional Coupler ◽  
Capacitive Coupling ◽  
Coupling Coefficients ◽  
Coupled Line ◽  
Line Section ◽  
Measurement Results

In this paper, a bi-level microstrip differential directional coupler has been investigated. It has been shown that the equalization of coupling coefficients can be successfully made with the use of appropriate dielectric stack-up and conductor geometry. The application of additional top dielectric layer can ensure proper equalization of coupling coefficients by lowering the value of capacitive coupling coefficient to the value of the inductive one. The theoretically investigated coupled-line section has been used for the design of a 3-dB differential directional coupler. The measurement results are compared with the theoretical ones.

scholarly journals DESIGN OF FILTERING COUPLED-LINE TRANS-DIRECTIONAL COUPLER WITH BROADBAND BANDPASS RESPONSE

2021 ◽  
Vol 100 ◽  
pp. 163-173
Author(s):  
Hongmei Liu ◽  
Xiaoting Li ◽  
Yongquan Guo ◽  
Shao-Jun Fang ◽  
Zhongbao Wang
Keyword(s):  
Directional Coupler ◽  
Coupled Line

Numerical Analysis of Nonlinear Directional Couplers

1997 ◽  
Vol 08 (04) ◽  
pp. 665-684
Author(s):  
Chih-Hsien Lai ◽  
Hung-Chun Chang ◽  
Jia-Pang Pang
Keyword(s):  
Power Distribution ◽  
Directional Coupler ◽  
Power Level ◽  
Local Power ◽  
Segmentation Method ◽  
Nonlinear Modes ◽  
Coupled Mode ◽  
Guided Modes ◽  
Nonlinear Directional Coupler ◽  
Fixed Power

The original coupled-mode theory for the nonlinear directional coupler (NLDC) and two later improved theories are reviewed and compared with the analysis using the segmentation method proposed in this work. The segmentation method is more accurate in analyzing the NLDC because it takes into account the real situation that the local nonlinear guided modes in the NLDC will vary along the propagation direction due to the accompanying variation in the local power distribution. In the coupled-mode formulations reviewed, however, either linear guided modes or nonlinear modes at a fixed power level are employed when evaluating related coupling quantities.

Erratum for ‘Microstrip coupled-line directional coupler with enhanced coupling based on EBG concept’

2012 ◽  
Vol 48 (7) ◽  
pp. 411
Author(s):  
M. Chudzik ◽  
I. Arnedo ◽  
A. Lujambio ◽  
I. Arregui ◽  
F. Teberio ◽  
...  
Keyword(s):  
Directional Coupler ◽  
Coupled Line
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