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Tri-band Wilkinson power distributor

A power divider and three-band technology, applied in the field of radio frequency microwave, can solve the problem of Wilkinson power divider working in a single frequency band and its odd harmonics, etc., and achieve simple structure, simple design and lower production cost. Effect

Inactive Publication Date: 2011-02-16
SOUTH CHINA UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the shortcomings of the traditional Wilkinson power divider that can only work in a single frequency band and its odd harmonics, and provide a three-band Wilkinson power divider. The present invention can realize three-band Wilkinson power The work of the distributor has the advantages of low cost and simple structure, and can work in three controllable frequency bands to meet the multi-band work requirements of modern wireless communications

Method used

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Examples

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Embodiment 1

[0029] A present embodiment works in 1 / 2.55 / 3GH tri-band Wilkinson power splitter, its structure is as follows figure 1 As shown, it includes a dual-frequency Wilkinson power divider, and impedance converters are respectively installed on the three ports of the dual-frequency Wilkinson power divider, and the impedance converter is used to realize a three-band Wilkinson power divider The input port is matched and the output port is isolated.

[0030] Such as figure 2 As shown, the impedance converter is composed of a dual-frequency resonator and a transmission line, and the dual-frequency Wilkinson power divider is connected to the dual-frequency resonator through a transmission line.

[0031] Such as image 3 As shown, the input terminals of the two transmission lines 10 are connected together, and an isolation resistor 11 is connected between the output terminals to form a traditional single-frequency Wilkinson power divider. The dual-frequency Wilkinson power divider is o...

Embodiment 2

[0038] A three-band Wilkinson power divider, its structure is as follows Figure 8 As shown, it includes a dual-frequency Wilkinson power divider, and impedance converters are respectively installed on the three ports of the dual-frequency Wilkinson power divider, and the impedance converter is used to realize a three-band Wilkinson power divider The input port is matched and the output port is isolated.

[0039] The impedance converter is composed of a step impedance resonator (SIR, Step Impedance Resonator) and a transmission line, and the dual-frequency Wilkinson power divider is connected to the step impedance resonator through a transmission line.

[0040] Such as Figure 8 As shown, the input ends of two transmission lines 10 are connected together, and an isolation resistor 11 is connected between the output ends to form a traditional single-frequency Wilkinson power divider. The dual-frequency Wilkinson power divider is realized by adding two open-circuit stub lines ...

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Abstract

The invention discloses a tri-band Wilkinson power distributor. The distributor comprises a dual-frequency Wilkinson power distributor, wherein three ports of the dual-frequency Wilkinson power distributor are provided with an impedance converter respectively; and the impedance converter is used for realizing operation of the tri-band Wilkinson power distributor. The distributor of the invention can realize the operation of the tri-band Wilkinson power distributor, has the advantages of low cost, simple structure and the like, and can work under three controllable frequency bands to fulfill the requirement of multi-frequency work of modern wireless communication.

Description

technical field [0001] The invention relates to the field of radio frequency microwave technology, in particular to a three-band Wilkinson power divider. Background technique [0002] Wilkinson (Wilkinson) power divider is an important passive device in microwave radio frequency circuit, it has the function of power distribution or power combination, it is widely used in radio frequency such as balanced power amplifier, balanced mixer and antenna array in the circuit. With the rapid development of communication technology and the intensification of competition in the communication industry, new requirements are put forward for the performance of Wilkinson power dividers. [0003] The traditional Wilkinson power divider is realized by using the impedance transformation characteristics of the quarter-wavelength transmission line, and can only work in a single frequency band and its odd harmonics. The traditional Wilkinson power divider is far from being able to Meet the dual...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P5/16
Inventor 褚庆昕林峰
Owner SOUTH CHINA UNIV OF TECH
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