REALIZATION OF MINIATURIZED QUADRATURE HYBRID COUPLER WITH REDUCED LENGTH BRANCH ARMS USING RECURSIVELY LOADED STUBS

2013 ◽  
Vol 43 ◽  
pp. 45-54 ◽  
Author(s):  
Rowdra Ghatak ◽  
Manimala Pal ◽  
Biswajit Sarkar
Keyword(s):  
Hybrid Coupler

60 GHz low-loss branch-line hybrid coupler on nanoporous alumina interposer

2019 ◽  
Author(s):  
Bruno M. Verona ◽  
Gabriel K. Rocha ◽  
Ariana L. C. Serrano ◽  
Gustavo P. Rehder
Keyword(s):  
60 Ghz ◽  
Low Loss ◽  
Nanoporous Alumina ◽  
Branch Line ◽  
Hybrid Coupler

Compact wideband stripline hybrid coupler with an imbedded ground strip

2016 ◽  
Vol 58 (10) ◽  
pp. 2433-2437
Author(s):  
Young-Bae Jung
Keyword(s):  
Hybrid Coupler

Design of Broadband Hybrid Coupler With Tight Coupling Using Jumping Gene Evolutionary Algorithm

2009 ◽  
Vol 56 (8) ◽  
pp. 2987-2991 ◽  
Author(s):  
Shao Yong Zheng ◽  
Sai Ho Yeung ◽  
Wing Shing Chan ◽  
Kim Fung Man ◽  
Kit Sang Tang
Keyword(s):  
Evolutionary Algorithm ◽  
Tight Coupling ◽  
Hybrid Coupler

scholarly journals Design and Development of a 3dB Quadrature Patch Hybrid Coupler

2018 ◽  
Vol 7 (2.6) ◽  
pp. 217
Author(s):  
B Sekharbabu ◽  
K Narsimha Reddy ◽  
S Sreenu
Keyword(s):  
Integrated Circuit ◽  
High Frequency ◽  
Return Loss ◽  
Coupling Factor ◽  
Power Combiners ◽  
Measurement Results ◽  
Structure Simulation ◽  
Hybrid Coupler ◽  
Port Device ◽  
Circuit Technology

In this paper a -3 dB, 90-degreephase shift RF quadrature patch hybrid coupler is designed to operate at 2.4GHz. Hybrid coupler is a four-port device, that’s accustomed split a signaling with a resultant 90degrees’ section shift between output signals whereas maintaining high isolation between the output ports. The RF quadrature patch hybrid coupler is used in various radio frequency applications including mixers, power combiners, dividers, modulators and amplifiers. The desired hybrid coupler is designed using FR-4 substrate with 1.6mm height in High Frequency Structure Simulation (HFSS) and the same is fabricated and tested. The designed Hybrid coupler is examined in terms of parameters like insertion Loss, coupling factor and return Loss. The simulation and measurement results are compared. Major advantages of the RF quadrature patch hybrid couplers are that they are compatible with integrated circuit technology.

Design of a Compact Lower Hybrid Coupler for Alcator C-Mod

2003 ◽  
Vol 43 (2) ◽  
pp. 145-152 ◽  
Author(s):  
Stefano Bernabei ◽  
Joel C. Hosea ◽  
Chun Chieh Kung ◽  
George D. Loesser ◽  
Joseph Rushinski ◽  
...  
Keyword(s):  
Lower Hybrid ◽  
Hybrid Coupler

Comments on “Quasi-Arbitrary Phase-Difference Hybrid Coupler”

2013 ◽  
Vol 61 (4) ◽  
pp. 1725-1727 ◽  
Author(s):  
Yongle Wu ◽  
Junyu Shen ◽  
Yuanan Liu
Keyword(s):  
Phase Difference ◽  
Arbitrary Phase ◽  
Hybrid Coupler

Novel rat-race coupler design of arbitrary coupling coefficient using substrate integrated waveguide cavity

2018 ◽  
Vol 10 (8) ◽  
pp. 861-869 ◽  
Author(s):  
Min-Hua Ho ◽  
Yi-Hao Hong ◽  
Jen-Chih Li
Keyword(s):  
Transmission Lines ◽  
Coupling Coefficient ◽  
Substrate Integrated Waveguide ◽  
Cavity Field ◽  
Arbitrary Coupling ◽  
Degenerate Mode ◽  
Quarter Wavelength ◽  
Small Phase ◽  
Hybrid Coupler ◽  
Degenerate Modes

AbstractThe contribution of this paper is to propose a novel rat-race hybrid coupler of arbitrary coupling coefficient. Traditionally, the rat-race hybrid couplers are built by various loop-alike transmission-lines of multiple quarter-wavelength, and in this paper, we approach the coupler design by using a circular substrate integrated waveguide (SIW) cavity (SIWC). The employed SIWC supports two mutually orthogonal degenerate modes, and cavity field is formed by the two modes in an arbitrary weighting ratio which defines the proposed rat-race coupler's coupling coefficient. The cavity is excited by a microstrip combined coupling slot with the microstrip along a specifically chosen direction. The energy of each degenerate mode can be solely extracted by an associated subminiature version A (SMA) whose position is carefully determined. The isolation between the coupling slots is assured by their perpendicular layout, and the isolation between the SMA probes is obtained by the orthogonality of the two degenerate modes. Experiments are conducted on the 3- and 10-dB coupling coefficient samples to verify this novel rat-race coupler design. The measurements agree well with the simulations, and circuit's good performance is observed in terms of coupling precision, isolations, and small phase imbalances.

Compact microstrip S-Band 90° hybrid coupler

2013 ◽  
Author(s):  
Yi Lung Then ◽  
Kok Yeow You ◽  
Mohamad Ngasri Dimon ◽  
Jaw Chung Chong ◽  
Tian Swee Tan
Keyword(s):  
Hybrid Coupler
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