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Miniaturized harmonic suppression equal-dividing power divider based on H-type defect ground artificial transmission line

An artificial transmission line and harmonic suppression technology, applied in waveguide-type devices, electrical components, connecting devices, etc., can solve the problems of large size of Wilkinson power divider and no harmonic suppression, and achieve good harmonic suppression effect. , The effect of reducing the size of the power divider and improving the signal-to-noise ratio

Active Publication Date: 2019-08-02
CHONGQING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, the object of the present invention is to provide a microstrip miniaturized harmonic suppression equal power divider based on an artificial transmission line with H-shaped defects, so as to solve the problem that the Wilkinson power divider in the prior art is too large in size and does not have harmonic Problems with the wave suppression function

Method used

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  • Miniaturized harmonic suppression equal-dividing power divider based on H-type defect ground artificial transmission line
  • Miniaturized harmonic suppression equal-dividing power divider based on H-type defect ground artificial transmission line
  • Miniaturized harmonic suppression equal-dividing power divider based on H-type defect ground artificial transmission line

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Embodiment

[0052] The sample of this embodiment is a miniaturized harmonic suppression equal power divider based on an artificial transmission line with H-shaped defects and a working frequency of 0.9 GHz. The microstrip circuit of the sample in this embodiment is etched on one side of the polytetrafluoroethylene dielectric substrate, and the H-type defect is etched on the ground plane on the other side of the dielectric substrate. The relative permittivity of the dielectric substrate is ε r =2.65, the substrate thickness is 1mm. The isolation resistor used in the sample of this embodiment is a chip resistor with a model number of 0805, the impedance value is 100Ω, and the size of the chip resistor is 2.0mm×1.2mm.

[0053] The circuit size of the sample power divider in this embodiment is 17.7mm×33.1mm. i.e. 0.78λ g ×0.15λ g ,λ g is the guided wavelength on the dielectric substrate corresponding to the working frequency of 0.9GHz, such as Figure 7 shown. Such as Figure 8 As sho...

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Abstract

The invention relates to a miniaturized harmonic suppression equal-dividing power divider based on an H-type defect ground artificial transmission line, which belongs to the field of radio frequency microwave circuits. The power divider comprises a dielectric substrate; a metal microstrip is arranged on one surface of the dielectric substrate, and comprises a metal microstrip surface portion of two sections of H-type defect ground artificial transmission lines, a signal input port microstrip line, signal first and second output port microstrip lines and a patch isolation resistor; each sectionof the H-type defect ground artificial transmission line has a bilateral symmetrical structure and comprises two sections of folded thin transmission lines, two sections of vertical short thin transmission lines, two sections of horizontal thin transmission lines, two sections of short rectangular open circuit branches, two sections of vertical long thin transmission lines, a section of horizontal thick transmission line, two long rectangular open circuit branches and an H-type defect ground structure etched on a metal grounding plate. Compared with the traditional power divider, the power divider disclosed in the invention has a significantly smaller size and has a good harmonic suppression capability for a wide stop band formed by the harmonics.

Description

technical field [0001] The invention belongs to the field of radio-frequency microwave circuits, and in particular relates to a microstrip miniaturized equal-section Wilkinson power divider with harmonic suppression function applied in radio-frequency circuits. Background technique [0002] The Wilkinson power divider is a common power divider, which is used to divide the input signal into two or more signals with the same phase output according to different ratios. Because of its good isolation and relatively simple structure, it is widely used in radio frequency microwave circuits, such as the feed system of multi-antenna arrays and power amplifier circuits. The traditional bisected Wilkinson power splitter is mainly composed of two quarter-wavelength microstrip transmission lines and a 100Ω chip isolation resistor. Since the quarter-wavelength microstrip transmission line is limited by the waveguide wavelength, the power splitter The size of the power divider is usually ...

Claims

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Application Information

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IPC IPC(8): H01P5/16
CPCH01P5/16
Inventor 黄文郭希李佳阮巍
Owner CHONGQING UNIV OF POSTS & TELECOMM
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