Novel Miniaturized Harmonic Suppression Branch-Line Coupler Using Artificial Transmission Lines for UHF Applications

2011 ◽  
Vol E94-C (7) ◽  
pp. 1237-1239
Author(s):  
Chia-Hao KU ◽  
Hsien-Wen LIU ◽  
Yu-Shu LIN ◽  
Kuei-Yi LIN ◽  
Pao-Jen WANG
Keyword(s):  
Transmission Lines ◽  
Harmonic Suppression ◽  
Branch Line

scholarly journals Compact Microwave Components with Harmonic Suppression Based on Artificial Transmission Lines

2019 ◽  
Vol 2019 ◽  
pp. 1-16 ◽  
Author(s):  
Wen Huang ◽  
Jia Li ◽  
Ping Li ◽  
Xi Guo
Keyword(s):  
Transmission Lines ◽  
Power Divider ◽  
Harmonic Suppression ◽  
Branch Line ◽  
Interdigital Capacitor ◽  
Isosceles Trapezoid ◽  
Compact Size ◽  
Microwave Components ◽  
Wilkinson Power Divider ◽  
Microstrip Transmission Lines

In this paper, compact microwave components, including a Wilkinson power divider and a 3 dB branch-line coupler based on artificial transmission lines (ATLs) with harmonic suppression, are presented. A section ATL is consisted of microstrip stepped impedance transmission lines and a microstrip interdigital capacitor. To achieve a compact size, the stepped impedance transmission lines are folded into a right-angled triangle shape. For the ATL, the interdigital capacitor is used to suppress harmonics. By employing two sections of 70.7 Ω ATLs with a right-angled triangle shape to replace conventional transmission lines, the proposed power divider working at 0.9 GHz achieves a size miniaturization with the 58.8% area of a conventional case. In addition, the power divider has good harmonic suppression performance. In the design of a branch-line coupler, two pairs of ATLs with 50 Ω and 35.4 Ω are utilized. For 50 Ω ATLs, the ATLs are designed to a right-angled triangle shape. Meanwhile, to obtain a more compact size, these 35.4 Ω ATLs are modified to an isosceles trapezoid shape. The proposed branch-line coupler operating at 0.9 GHz accounts for merely 33.4% of a coupler adopting conventional microstrip transmission lines. Moreover, the harmonics of a branch-line coupler are suppressed effectively as well. Finally, measured results of the proposed Wilkinson power divider and branch-line coupler display good performance and agree with their simulated results well.

scholarly journals Miniaturized dual-band coupler using three-branch-line structure and dual transmission lines

2017 ◽  
Vol 14 (18) ◽  
pp. 20170834-20170834
Author(s):  
Lamin Zhan ◽  
Zuwei Li ◽  
Wenguang Li ◽  
Xiang Zhang
Keyword(s):  
Transmission Lines ◽  
Dual Band ◽  
Branch Line ◽  
Line Structure ◽  
Dual Transmission

Design of tri-band branch-line couplers using novel tri-band transmission lines

2014 ◽  
Author(s):  
Han Ren ◽  
Jin Shao ◽  
Mi Zhou ◽  
Bayaner Arigong ◽  
Jun Ding ◽  
...  
Keyword(s):  
Transmission Lines ◽  
Branch Line
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