Design of a Branch Line Hybrid Coupler Using Artificial Dielectric Substrate and Defected Ground Structures

2014 ◽  
Vol 12 (11) ◽  
Author(s):  
Kyunghoon Kwon
Keyword(s):  
Dielectric Substrate ◽  
Branch Line ◽  
Artificial Dielectric ◽  
Hybrid Coupler ◽  
Defected Ground Structures ◽  
Ground Structures

Design of a Branch Line Coupler Using Double-Sided Artificial Dielectric Substrate Structure

2015 ◽  
Vol 13 (4) ◽  
pp. 45 ◽  
Author(s):  
Jongsik Lim ◽  
Kyunghoon Kwon ◽  
Sang-Min Han ◽  
Dal Ahn ◽  
Yongchae Jeong
Keyword(s):  
Dielectric Substrate ◽  
Branch Line ◽  
Substrate Structure ◽  
Artificial Dielectric

Design of A Asymmetric Branch Line Coupler Using Artificial Dielectric Substrate

2012 ◽  
Vol 13 (5) ◽  
pp. 2319-2324 ◽  
Author(s):  
Jong-Sik Lim ◽  
Jae-Hoon Lee ◽  
Kyung-Hoon Kwon ◽  
Dal Ahn
Keyword(s):  
Dielectric Substrate ◽  
Branch Line ◽  
Artificial Dielectric

A compact branch-line coupler using defected ground structures

2008 ◽  
Vol 50 (2) ◽  
pp. 386-389 ◽  
Author(s):  
Mohsen Maddah-Ali ◽  
Hamid Dalili Oskouei ◽  
Keyvan Forooraghi
Keyword(s):  
Branch Line ◽  
Defected Ground Structures ◽  
Ground Structures

MICROSTRIP ELECTROMAGNETIC BANDGAP ELEMENT ON GROUND FOR HYBRID RING COUPLERS

2009 ◽  
Vol 23 (01) ◽  
pp. 63-69 ◽  
Author(s):  
FEI ZHANG ◽  
CHENGFANG LI
Keyword(s):  
Ground Plane ◽  
Open Loop ◽  
New Wave ◽  
Electromagnetic Bandgap ◽  
Harmonic Signals ◽  
Hybrid Coupler ◽  
Defected Ground Structures ◽  
Insertion Losses ◽  
Ground Structures ◽  
Hybrid Ring

In this paper, a novel compact rat-race hybrid coupler incorporating square open-loop defected ground structures (SOL-DGSs) is designed and verified. As a new wave of microstrip electromagnetic bandgap element (MEBE) technology on ground plane, the bandgap characteristic of SOL-DGS is employed to reject the high-order harmonics without any additional filter and the excellent slow-wave effect of SOL-DGS is studied and utilized to reduce the circuit size in the design of the hybrid coupler. The measured insertion losses are 3.54 dB and 3.63 dB for two input ports. The isolation between port 1 and port 3 achieves around -30 dB. Furthermore, the proposed rat-race coupler successfully rejects the second, third, fourth and even fifth harmonic signals.

Phase shifter with high phase shifts using defected ground structures

2005 ◽  
Vol 41 (4) ◽  
pp. 196 ◽  
Author(s):  
S.M. Han ◽  
C.-S. Kim ◽  
D. Ahn ◽  
T. Itoh
Keyword(s):  
Phase Shifter ◽  
Phase Shifts ◽  
Defected Ground Structures ◽  
Ground Structures ◽  
High Phase
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