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Double-frequency unequal power divider

A technology of power divider and impedance converter, which is applied in the direction of waveguide devices, electrical components, connecting devices, etc., can solve the problems of large volume and difficult design, and achieve the goal of simplifying the design process, reducing design difficulty, and reducing volume Effect

Active Publication Date: 2012-07-04
上海中兴易联通讯股份有限公司
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a high-quality, compact dual-frequency unequal power splitter, aiming at the shortcomings of the existing dual-frequency unequal power splitter, which are large in size and difficult to design. And its ports are well matched

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Embodiment Construction

[0036] The present invention designs a dual-frequency unequal power divider, which uses a dual-frequency function lambda / 4 composite left and right hand transmission line branches instead of the traditional unequal Wilkinson power splitter lambda / 4 transmission line, the right-hand part of the λ / 4 composite left-hand transmission line branch is implemented by a microstrip line, and the left-hand part is formed by cascading N left-hand transmission line units, and each left-hand transmission unit includes a series capacitor C and a parallel inductance L. In addition, a dual-frequency converter is used at the output port to realize the impedance matching of the output port.

[0037] The dual-frequency unequal power divider of the present invention includes a base, an input port 1 (1), an output port 2 (2), 3 (3), an entrance microstrip line (4), and two upper and lower dual-frequency λ / 4 composite left and right hands Transmission line branches (5), (6), a resistor (7), and ...

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Abstract

The invention relates to a double-frequency unequal power divider, which comprises a substrate, an input port 1, output ports 2 and 3, an inlet microstrip line, an upper and a lower double-frequency lambda / 4 composite left-right-handed transmission line branches, a resistor and two double-frequency impedance converters, wherein the input port 1 is connected with the inlet microstrip line, and the tail end of the inlet microstrip line is divided into the upper and the lower double-frequency lambda / 4 composite left-right-handed transmission lines; the junction of the upper and the lower branches is provided with the resistor; and the right sides of the tail ends of the upper and the lower branches are respectively added with a certain corner compensation and then are respectively connected with the dovetailed double-frequency impedance converters 1 and 2, thereby reaching the output ports 2 and 3. The double-frequency lambda / 4 composite left-right-handed transmission lines are adopted in the unequal Wilkinson power divider, so that the double-frequency unequal division function is realized, the volume of the device is decreased, the design process is simplified, and the design difficulty is reduced. In addition, the output ports adopt the dovetailed double-frequency impedance converters to realize the impedance match of the output ports. Signal reflection is decreased, and the mutual coupling among microstrip lines is reduced.

Description

technical field [0001] The invention relates to a dual-frequency unequal power divider, in particular to a Wilkinson power divider based on a composite left-handed transmission line. technical background [0002] As a very important device in the microwave system, the Wilkinson power divider was first proposed by E. Wilkinson in 1960. It is generally designed to work at a single frequency [1] ( Wok-Keung M. Cheng, and Pak-Wing Li. A Novel Power-Divider Design With Unequal Power-Dividing Ratio and Simple Layout[J]. IEEE Transactions on Microwave Theory and Techniques, 2009, 57(6):1589- 1594.), but with the development of wireless communication systems, there are more and more functional requirements for power splitters, and they are getting higher and higher. In recent years, based on the dual frequency converter proposed by Monzon [2] (C. Monzon, "A small dual-frequency transformer in two sections," IEEE Transactions on Microwave Theory and Techniques, 2003, 51 (4): 1157–1...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P5/16
Inventor 潘武张雪莲吴文雯宋茂叶
Owner 上海中兴易联通讯股份有限公司
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