Coupled Lines for Wearable Power Dividers: Coupled Transmission-Line Sections for Power Dividers in Wearable and Flexible RF Electronics

AbstractA series of compact filtering power dividers (FPDs) with simple layouts are proposed based on coupling topology. The structure of the presented FPD1 is composed of three resonators and one isolating resistor. These FPDs can be designed based on coupling matrix filter theory. A half-wave transmission line is employed in FPD2 to introduce a transmission zero (TZ) locating at 1.27f0. The FPD3 is designed by replacing quarter-wave transmission lines in FPD2 with quarter-wave coupled lines, which will produce a TZ locating at 1.96 f0 and extend upper stopband bandwidth. For verification, three FPDs centered at 2.45 GHz are fabricated and measured. All measured results are in good agreement with the full-wave simulation results.

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A Novel Small-Size Coupled-Line Wilkinson Power Divider for Dual-Band Applications

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.437.1066 ◽

2013 ◽

Vol 437 ◽

pp. 1066-1072 ◽

Cited By ~ 1

Author(s):

Wei Min Wang ◽

Yuan An Liu

Keyword(s):

Design Theory ◽

Power Divider ◽

Dual Band ◽

Coupled Line ◽

Power Dividers ◽

Full Wave ◽

Coupled Lines ◽

Parameters Analysis ◽

Wilkinson Power Dividers ◽

Circuit Configuration

A novel coupled-line circuit configuration is proposed to design small-size dual-band Wilkinson power dividers. This proposed power divider consists of three sections of coupled lines and two isolation resistors. The analytical design theory is given and the electrical parameters analysis is provided. Six numerical examples are presented to demonstrate the flexible dual-band applications. To avoid a negative isolation resistor, a practical power divider operating at 1GHz and 2.2GHz with two positive-value resistors is designed. The calculated and full-wave simulated results verify our proposed idea. Keywords: Coupled-line, dual-band, power divider.

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Unequal Power Dividers Using Uniform Impedance Transmission Lines with Stubs

Journal of Electromagnetic Engineering and Science ◽

10.26866/jees.2021.21.1.44 ◽

2021 ◽

Vol 21 (1) ◽

pp. 44-50

Author(s):

Young-Chul Yoon ◽

Young Kim

Keyword(s):

Transmission Line ◽

Transmission Lines ◽

Control Method ◽

Impedance Control ◽

Short Circuit ◽

Scaling Factor ◽

Operating Frequency ◽

Experimental Measurements ◽

Power Dividers

This study proposes an impedance control method in transmission lines using open- or short-circuit stubs for unequal power dividers. The proposed method is based on the conversion of a two-port to a three-port transmission line, which is equivalent to multiplying the impedance at the internal transmission line by a scaling factor and then connecting open- or short-circuit stubs in parallel to each port on the three-port transmission line. To verify the effectiveness of the proposed method, Wilkinson and Gysel power dividers with splitting ratios of 9:1 and 5:1, respectively, using uniform impedance transmission lines with open- or short-circuit stubs at an operating frequency of 2 GHz were designed. The experimental measurements of the two power dividers agree well with those of the simulation.

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