Please use this identifier to cite or link to this item: http://localhost/handle/Hannan/231438
Title: A Balanced Branch-Line Coupler With Arbitrary Power Division Ratio
Authors: Jin Shi;Jun Qiang;Kai Xu;Jian-Xin Chen
Year: 2017
Publisher: IEEE
Abstract: In this paper, a balanced branch-line coupler with an arbitrary power division ratio is proposed. Configured by four quarter- and half-wavelength microstrip lines, the proposed design achieved desired functions of branch-line coupler for differential-mode signal and common-mode suppression with the merits of wide bandwidth, a simple configuration and a design method, low insertion loss, and low cost. The even-and odd-mode equivalent circuits combining with the standard and mixed-mode S-parameters are adopted to derive the analytical equations. Three prototypes with the power division ratios of 1:1, 2:1, and 4:1 are designed to verify the theoretical prediction. The prototypes with the size of 0.52 &x03BB;g X 0.5 &x03BB;g (&x03BB;<sub>g</sub> is the guided wavelength at 1.86 GHz) exhibits the operating bandwidths (IS<sub>ddAA</sub>/DA|, |S<sub>ccDA</sub>| &lt;; -15 dB) of 4.3%, 7.3%, and 10.2% and the minimum insertion losses of 0.45, 0.25, and 0.1 dB, respectively, while the isolation and common-mode suppression are higher than 20 dB within the whole passband.
URI: http://localhost/handle/Hannan/231438
volume: 65
issue: 1
More Information: 78,
85
Appears in Collections:2017

Files in This Item:
File SizeFormat 
7587402.pdf2.19 MBAdobe PDF
Title: A Balanced Branch-Line Coupler With Arbitrary Power Division Ratio
Authors: Jin Shi;Jun Qiang;Kai Xu;Jian-Xin Chen
Year: 2017
Publisher: IEEE
Abstract: In this paper, a balanced branch-line coupler with an arbitrary power division ratio is proposed. Configured by four quarter- and half-wavelength microstrip lines, the proposed design achieved desired functions of branch-line coupler for differential-mode signal and common-mode suppression with the merits of wide bandwidth, a simple configuration and a design method, low insertion loss, and low cost. The even-and odd-mode equivalent circuits combining with the standard and mixed-mode S-parameters are adopted to derive the analytical equations. Three prototypes with the power division ratios of 1:1, 2:1, and 4:1 are designed to verify the theoretical prediction. The prototypes with the size of 0.52 &x03BB;g X 0.5 &x03BB;g (&x03BB;<sub>g</sub> is the guided wavelength at 1.86 GHz) exhibits the operating bandwidths (IS<sub>ddAA</sub>/DA|, |S<sub>ccDA</sub>| &lt;; -15 dB) of 4.3%, 7.3%, and 10.2% and the minimum insertion losses of 0.45, 0.25, and 0.1 dB, respectively, while the isolation and common-mode suppression are higher than 20 dB within the whole passband.
URI: http://localhost/handle/Hannan/231438
volume: 65
issue: 1
More Information: 78,
85
Appears in Collections:2017

Files in This Item:
File SizeFormat 
7587402.pdf2.19 MBAdobe PDF
Title: A Balanced Branch-Line Coupler With Arbitrary Power Division Ratio
Authors: Jin Shi;Jun Qiang;Kai Xu;Jian-Xin Chen
Year: 2017
Publisher: IEEE
Abstract: In this paper, a balanced branch-line coupler with an arbitrary power division ratio is proposed. Configured by four quarter- and half-wavelength microstrip lines, the proposed design achieved desired functions of branch-line coupler for differential-mode signal and common-mode suppression with the merits of wide bandwidth, a simple configuration and a design method, low insertion loss, and low cost. The even-and odd-mode equivalent circuits combining with the standard and mixed-mode S-parameters are adopted to derive the analytical equations. Three prototypes with the power division ratios of 1:1, 2:1, and 4:1 are designed to verify the theoretical prediction. The prototypes with the size of 0.52 &x03BB;g X 0.5 &x03BB;g (&x03BB;<sub>g</sub> is the guided wavelength at 1.86 GHz) exhibits the operating bandwidths (IS<sub>ddAA</sub>/DA|, |S<sub>ccDA</sub>| &lt;; -15 dB) of 4.3%, 7.3%, and 10.2% and the minimum insertion losses of 0.45, 0.25, and 0.1 dB, respectively, while the isolation and common-mode suppression are higher than 20 dB within the whole passband.
URI: http://localhost/handle/Hannan/231438
volume: 65
issue: 1
More Information: 78,
85
Appears in Collections:2017

Files in This Item:
File SizeFormat 
7587402.pdf2.19 MBAdobe PDF