Wilkinson power divider based on left-handed microstrip line

A technology of power divider and microstrip line, which is applied in the field of Wilkinson power divider, can solve the problem of bandwidth limitation of isolated signals and achieve the effect of reducing the limitation of bandwidth

Inactive Publication Date: 2011-04-13
上海杰盛无线通讯设备有限公司
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  • Abstract
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Problems solved by technology

When the offset is large, the reflected power no longer cancels each other and the bandwidth of the isolated signal is limited

Method used

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  • Wilkinson power divider based on left-handed microstrip line
  • Wilkinson power divider based on left-handed microstrip line

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Embodiment Construction

[0011] Please refer to the accompanying drawings for a further description of the present invention.

[0012] Such as figure 1 As shown, the present invention provides a Wilkinson power divider based on left-handed microstrip line, which is characterized in that: the input end and output end are both right-handed transmission lines, and the length is λ / 8; the Y branch arm adopts left-handed transmission line , the length is λ / 4, λ is the central working wavelength, and the left-hand transmission line is realized by the collective L-C element, that is, the unit structure is composed of a series capacitor CL and a parallel inductor LL.

[0013] FR4 epoxy resin (dielectric constant 4.4) is selected as the substrate material of the power divider of the present invention. The thickness of the substrate is 1.5mm, the thickness of the metal conductor layer is 0.035mm, and the conductivity is 5.88×107S / m. In the manufacturing process of the device, the λ / 8 right-hand transmission li...

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Abstract

The invention discloses a Wilkinson power divider based on a left-handed microstrip line. The Wilkinson power divider is characterized in that the input end and the output end are right-handed transmission lines in the length of lambda / 8; the Y-branch arm adopts a left-handed transmission line in the length of lambda / 4, wherein the lambda is the central operating wavelength; and the left-handed transmission line is realized by adopting a total set of L-C elements, i.e. the unit structure comprises a series capacitor CL and a parallel inductor LL. The invention has the advantages that the isolation bandwidth is added by approximate 50 percent to be 1.5 f0 and the size is smaller than that of a traditional power divider.

Description

technical field [0001] The invention relates to a power splitter in microwave communication, in particular to a Wilkinson power splitter based on a left-handed microstrip line. Background technique [0002] The microwave power divider is an important functional device used in microwave circuits to divide the input signal power into multiple outputs, and is one of the core devices that compose microwave and wireless networks. According to the characteristics of the circuit, it can be divided into two types: simple power divider and isolated power divider. There is usually no isolation resistor placed between the output terminals of a simple power divider. Its advantage is that it is easier to realize multi-channel distribution and can obtain higher input-output isolation in a larger bandwidth range. Because most of this type of power splitter uses multi-section impedance transformation lines to expand the bandwidth, its size is usually relatively large, and it is not easy to...

Claims

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Application Information

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IPC IPC(8): H01P5/16
Inventor 王鲁培焦晨秋王斌
Owner 上海杰盛无线通讯设备有限公司
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