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Content Provider | IET Digital Library |
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Author | Shen, Xiaochuan Liu, Yuanan Zhou, Siyue Wu, Yongle |
Abstract | This study presents a novel planar coupled-line directional coupler with tunable both power division ratio and operating frequency, which is achieved using microstrip technology for the first time. Its tunability of the operating frequency and the power division ratio, or coupling ratio, can be independently controlled by the bias voltages. Moreover, it can simultaneously maintain perfect port match and isolation. On the basis of the even–odd mode analysis method, both the closed-form analytical equations and parameter discussions are provided to facilitate the practical design. An experimental prototype of the tunable coupler is simulated, fabricated, and measured to demonstrate how it works. The measured results indicate that power division ratio can vary from 0.35 (9 dB) to 0.71 (3 dB) when operating frequency ranges from 0.55 to 1.48 GHz (91.63%) while power division ratio varies from 0.35 (9 dB) to 1 (0 dB) when operating frequency is fixed at 1 GHz, which validated the reliability of the proposed model. |
Starting Page | 59 |
Ending Page | 68 |
Page Count | 10 |
ISSN | 17518725 |
Volume Number | 11 |
e-ISSN | 17518733 |
Issue Number | Issue 1, Jan (2017) |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-map/11/1 |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-map.2016.0067 |
Journal | IET Microwaves, Antennas & Propagation |
Publisher Date | 2017-01-08 |
Access Restriction | Open |
Rights Holder | © The Institution of Engineering and Technology |
Subject Keyword | Bias Voltage Closed-form Analytical Equation Coupling Ratio Directional Couplers Even-odd Mode Analysis Method Frequency 0.55 GHz to 1.48 GHz Microstrip Technology Operating Frequency Tuning Planar Coupled-line Directional Coupler Power Division Ratio Tuning UHF Couplers Waveguide And Microwave Transmission Line Component |
Content Type | Text |
Resource Type | Article |
Subject | Electrical and Electronic Engineering |
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