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A novel balanced-to-balanced power divider based on three-line coupled structure

Published online by Cambridge University Press:  14 January 2019

Zhen Tan ,
Qing-Yuan Lu  and
Jian-Xin Chen Open the ORCID record for Jian-Xin Chen [Opens in a new window]
Zhen Tan
Affiliation:
School of Electronics and Information, and Tongke School of Microelectronics, Nantong University, 9 Seyuan Road, Nantong 226019, China
Qing-Yuan Lu
Affiliation:
School of Electronics and Information, and Tongke School of Microelectronics, Nantong University, 9 Seyuan Road, Nantong 226019, China
Jian-Xin Chen*
Affiliation:
School of Electronics and Information, and Tongke School of Microelectronics, Nantong University, 9 Seyuan Road, Nantong 226019, China
*
Author for correspondence: Jian-Xin Chen, E-mail: jjxchen@hotmail.com
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Abstract

This paper presents a novel balanced-to-balanced power divider (PD) based on a simple and compact three-line coupled structure for the first time. By bisecting the proposed symmetrical structure, the differential mode (DM) and the common mode (CM) equivalent circuits can be obtained for analysis. The DM equivalent circuit exhibits a three-line in-phase power dividing response, and then a resistor is added between the two outputs for achieving good isolation. Meanwhile, the CM equivalent circuit shows a three-line all-stop response so that the CM suppression in this design does not need to be considered. Accordingly, the detailed design procedure of the DM PD is given. For demonstration, a prototype centered at 1.95 GHz is designed, fabricated, and measured. The simulated and measured results with good agreement are presented, showing low DM loss and wideband CM suppression.

Keywords

Balanced-to-balanced power divider (PD)three-line coupled structurecommon-mode (CM) suppression
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 11 , Issue 2 , March 2019 , pp. 139 - 142
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2019 

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