A Novel Unequal Broadband Out‐of‐Phase Power Divider Using DSPSLs. Issue 1 (1st February 2014)

• Record Type: Journal Article
• Authors: Yun, Long Lu; Dai, Gao‐Le; Li, Kai
• Is Part Of: ETRI journal. Volume 36:Issue 1(2014)
• Page Start: 116
• Page End: 123
• Publication Date: 2014-02-01
• Subjects: Power divider -- unequal -- out‐of‐phase -- external isolation resistor -- high power‐handling capability; Telecommunication -- Periodicals; Electronics -- Periodicals; Electronics; Telecommunication; Periodicals; Periodicals; 621.38205
• DOI: 10.4218/etrij.14.0113.0125
• Languages: English
• ISSNs: 1225-6463

Abstract

Abstract : In this paper, a novel unequal broadband out‐of‐phase power divider (PD) is presented. Double‐sided parallel‐strip lines (DSPSLs) are employed to achieve an out‐of‐phase response. Also, an asymmetric dual‐band matching structure with two external isolation resistors is utilized to obtain arbitrary unequal power division, in which the resistors are directly grounded for heat sinking. A through ground via (TGV), connecting the top and bottom sides of the DSPSLs, is used to short the isolation components. Additionally, this property can efficiently improve the broadband matching and isolation bandwidths. To investigate the proposed divider in detail, a set of design equations are derived based on the circuit theory and transmission line theory. The theoretical analysis shows that broadband responses can be obtained as proper frequency ratios are adopted. To verify the proposed concept, a sample divider with a power division of 2:1 is demonstrated. The measured results exhibit a broad bandwidth from 1.19 GHz to 2.19 GHz (59.2%) with a return loss better than 10 dB and port isolation of 18 dB.