A Modified Wilkinson Power Divider with Improved In-band Performance and Compact Size

Lulu Wang; ChangKun Liu; WenHua Huang; Zhiqiang Yang; Chao Fu; Shaoyi Xie; Yue Jiang

doi:10.1587/elex.20.20230498

This article has now been updated. Please use the final version.

A Modified Wilkinson Power Divider with Improved In-band Performance and Compact Size

Lulu Wang, ChangKun Liu, WenHua Huang, Zhiqiang Yang, Chao Fu, Shaoyi Xie, Yue Jiang

Author information

Lulu Wang
School of Micro-Nano Electronics, Zhejiang University
Key Laboratory of Advanced Science and Technology on High Power Microwave, Northwest Institute of Nuclear Technology
ChangKun Liu
Key Laboratory of Advanced Science and Technology on High Power Microwave, Northwest Institute of Nuclear Technology
WenHua Huang
Key Laboratory of Advanced Science and Technology on High Power Microwave, Northwest Institute of Nuclear Technology
Zhiqiang Yang
Key Laboratory of Advanced Science and Technology on High Power Microwave, Northwest Institute of Nuclear Technology
Chao Fu
Key Laboratory of Advanced Science and Technology on High Power Microwave, Northwest Institute of Nuclear Technology
Shaoyi Xie
Key Laboratory of Advanced Science and Technology on High Power Microwave, Northwest Institute of Nuclear Technology
Yue Jiang
Key Laboratory of Advanced Science and Technology on High Power Microwave, Northwest Institute of Nuclear Technology

Keywords: Modified Wilkinson power divider, compact, shorted stub, improved in-band performance

JOURNAL FREE ACCESS Advance online publication

Article ID: 20.20230498

DOI https://doi.org/10.1587/elex.20.20230498

The final version of this article is now available: Vol. 21 (2024), No. 1 pp. 20230498-20230498

Details

Abstract

A modified Wilkinson power divider (PD) with improved in-band performance and compact size is proposed in this paper. Compared with conventional Wilkinson PD, such structure features with an additional shorted stub on the output port, which can introduce an extra transmission pole for in-band performance enhancement. Besides, the proposed Wilkinson PD adopts meander line for compact size. Furthermore, the isolation resistor is achieved with thin film resistance technology to avoid welding tolerance. To verify the mechanisms mentioned above, a modified Wilkinson PD operating at 7 GHz is designed and fabricated in size of 8.2mm×8.8mm (0.2×0.19), with significantly benefit of compact, wide-band, low loss and well in-band loss flatness characteristic. The measured fractional bandwidth (FBW) is 57.1% (i.e., 5-9 GHz) with insert loss of 3.2-3.4dB. Meanwhile, the return loss is less than 15dB.

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