A novel balanced-to-balanced power divider based on three-line coupled structure. Issue 2 (14th January 2019)

• Record Type: Journal Article
• Authors: Tan, Zhen; Lu, Qing-Yuan; Chen, Jian-Xin
• Is Part Of: International journal of microwave and wireless technologies. Volume 11:Issue 2(2019)
• Page Start: 139
• Page End: 142
• Publication Date: 2019-01-14
• Subjects: Balanced-to-balanced power divider (PD), -- three-line coupled structure, -- common-mode (CM) suppression; Wireless communication systems -- Periodicals; Microwave circuits -- Periodicals; Radio frequency -- Periodicals; 621.381305
• DOI: 10.1017/S1759078718001708
• Languages: English
• ISSNs: 1759-0787

Abstract

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.