A Miniaturized Wilkinson Power Divider with Harmonic Suppression Characteristics Using Planar Artificial Transmission Lines

Microstrip Wilkinson power dividers with harmonic suppression and size reduction are investigated. It is found that by loading reactive components at the middle of high impedance transmission lines (TLs), both size reduction and harmonic suppression can be achieved. Analyses and designs of such a kind of power divider are formulated in this paper. To demonstrate the design methodology, two power dividers centered at 1.8 GHz are optimally designed and confirmed by experiments. As compared with conventional Wilkinson power divider, the proposed power divider exhibits 55.6% size reduction, and high suppressions are achieved for 2nd and 3rd harmonic components. Both simulations and measurements are presented with good agreement.

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Compact Microwave Components with Harmonic Suppression Based on Artificial Transmission Lines

International Journal of Antennas and Propagation ◽

10.1155/2019/4923964 ◽

2019 ◽

Vol 2019 ◽

pp. 1-16 ◽

Cited By ~ 2

Author(s):

Wen Huang ◽

Jia Li ◽

Ping Li ◽

Xi Guo

Keyword(s):

Transmission Lines ◽

Power Divider ◽

Harmonic Suppression ◽

Branch Line ◽

Interdigital Capacitor ◽

Isosceles Trapezoid ◽

Compact Size ◽

Microwave Components ◽

Wilkinson Power Divider ◽

Microstrip Transmission Lines

In this paper, compact microwave components, including a Wilkinson power divider and a 3 dB branch-line coupler based on artificial transmission lines (ATLs) with harmonic suppression, are presented. A section ATL is consisted of microstrip stepped impedance transmission lines and a microstrip interdigital capacitor. To achieve a compact size, the stepped impedance transmission lines are folded into a right-angled triangle shape. For the ATL, the interdigital capacitor is used to suppress harmonics. By employing two sections of 70.7 Ω ATLs with a right-angled triangle shape to replace conventional transmission lines, the proposed power divider working at 0.9 GHz achieves a size miniaturization with the 58.8% area of a conventional case. In addition, the power divider has good harmonic suppression performance. In the design of a branch-line coupler, two pairs of ATLs with 50 Ω and 35.4 Ω are utilized. For 50 Ω ATLs, the ATLs are designed to a right-angled triangle shape. Meanwhile, to obtain a more compact size, these 35.4 Ω ATLs are modified to an isosceles trapezoid shape. The proposed branch-line coupler operating at 0.9 GHz accounts for merely 33.4% of a coupler adopting conventional microstrip transmission lines. Moreover, the harmonics of a branch-line coupler are suppressed effectively as well. Finally, measured results of the proposed Wilkinson power divider and branch-line coupler display good performance and agree with their simulated results well.

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Size reduction and performance improvement of a microstrip Wilkinson power divider using a hybrid design technique

Scientific Reports ◽

10.1038/s41598-021-87477-4 ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Mohammad Behdad Jamshidi ◽

Saeed Roshani ◽

Jakub Talla ◽

Sobhan Roshani ◽

Zdenek Peroutka

Keyword(s):

Performance Improvement ◽

Size Reduction ◽

Power Divider ◽

Experimental Result ◽

Hybrid Technique ◽

Harmonic Suppression ◽

Efficient Design ◽

Quarter Wavelength ◽

Lc Circuit ◽

Wilkinson Power Divider

AbstractIn the design of a microstrip power divider, there are some important factors, including harmonic suppression, insertion loss, and size reduction, which affect the quality of the final product. Thus improving each of these factors contributes to a more efficient design. In this respect, a hybrid technique to reduce the size and improve the performance of a Wilkinson power divider (WPD) is introduced in this paper. The proposed method includes a typical series LC circuit, a miniaturizing inductor, and two transmission lines, which make an LC branch. Accordingly, two quarter-wavelength branches of the conventional WPD are replaced by two proposed LC branches. Not only does this modification lead to a 100% size reduction, an infinite number of harmonics suppression, and high-frequency selectivity theoretically, but it also results in a noticeable performance improvement practically compared to using quarter-wavelength branches in the conventional microstrip power dividers. The main important contributions of this technique are extreme size reduction and harmonic suppression for the implementation of a filtering power divider (FPD). Furthermore, by tuning the LC circuit, the arbitrary numbers of unwanted harmonics are blocked while the operating frequency, the stopband bandwidth, and the operating bandwidth are chosen optionally. The experimental result verifies the theoretical and simulated results of the proposed technique and demonstrates its potential for improving the performance and reducing the size of other similar microstrip components.

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Miniaturized Wilkinson power divider with harmonic suppression with stubs

2011 IEEE Applied Electromagnetics Conference (AEMC) ◽

10.1109/aemc.2011.6256884 ◽

2011 ◽

Cited By ~ 2

Author(s):

R. Gowri ◽

Sribidhya Mohanty ◽

Anurag Vidyarthi

Keyword(s):

Power Divider ◽

Harmonic Suppression ◽

Wilkinson Power Divider

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Wilkinson Power Divider with Broadband Harmonic Suppression Using Radial Open Stubs

2018 IEEE 7th Global Conference on Consumer Electronics (GCCE) ◽

10.1109/gcce.2018.8574805 ◽

2018 ◽

Cited By ~ 1

Author(s):

Zheng Hongyu ◽

Hitoshi Hayashi

Keyword(s):

Power Divider ◽

Harmonic Suppression ◽

Wilkinson Power Divider

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Theory and Design of a Flexible Two-Stage Wideband Wilkinson Power Divider

Electronics ◽

10.3390/electronics10172168 ◽

2021 ◽

Vol 10 (17) ◽

pp. 2168

Author(s):

Antra Saxena ◽

Mohammad Hashmi ◽

Deepayan Banerjee ◽

Muhammad Akmal Chaudhary

Keyword(s):

Transfer Function ◽

Transmission Lines ◽

Short Circuit ◽

Wide Band ◽

Power Divider ◽

Design Parameters ◽

Two Stage ◽

Quarter Wave ◽

Band Pass ◽

Wilkinson Power Divider

This article presents the design scheme of a wideband Wilkinson Power Divider (WPD) with two-stage architecture utilizing quarter-wave transmission lines and short-circuit stubs. The bandwidth of the proposed WPD is flexible and can be controlled using the design parameters. The proposed design achieves excellent isolation between output ports in addition good in-band performance. The analysis of the proposed circuit results in a simplified transfer function which is then equated with a standard band-pass transfer function to determine the parameters of transmission lines, stub’s impedances, and the value of the isolation resistors. Furthermore, it is also demonstrated that a simple alteration in the proposed circuit enables the design of a wideband DC isolated WPD that maintains a good in-band and isolation performance. A number of case studies have been included to highlight the flexibility of the proposed design. Two distinct prototypes are developed on different boards to demonstrate the wideband performance of the proposed design. An excellent agreement between the experimental and measured results for both the designs over a wide band including very good isolation between ports validate the proposed design.

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