Please use this identifier to cite or link to this item: http://localhost/handle/Hannan/130057
Title: Coupled-line directional coupler with tunable power division ratio and operating frequency
Authors: Xiaochuan Shen;Yuanan Liu;Siyue Zhou;Yongle Wu
Year: 2017
Publisher: IET
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.
URI: http://localhost/handle/Hannan/130057
volume: 11
issue: 1
More Information: 59,
68
Appears in Collections:2017

Files in This Item:
File SizeFormat 
7828236.pdf1.24 MBAdobe PDF
Title: Coupled-line directional coupler with tunable power division ratio and operating frequency
Authors: Xiaochuan Shen;Yuanan Liu;Siyue Zhou;Yongle Wu
Year: 2017
Publisher: IET
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.
URI: http://localhost/handle/Hannan/130057
volume: 11
issue: 1
More Information: 59,
68
Appears in Collections:2017

Files in This Item:
File SizeFormat 
7828236.pdf1.24 MBAdobe PDF
Title: Coupled-line directional coupler with tunable power division ratio and operating frequency
Authors: Xiaochuan Shen;Yuanan Liu;Siyue Zhou;Yongle Wu
Year: 2017
Publisher: IET
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.
URI: http://localhost/handle/Hannan/130057
volume: 11
issue: 1
More Information: 59,
68
Appears in Collections:2017

Files in This Item:
File SizeFormat 
7828236.pdf1.24 MBAdobe PDF