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Anti-phase Unequal Power Splitter Based on Parallel Coupling Structure

A technology of parallel coupling and power splitter, applied in waveguide devices, circuits, connecting devices, etc., can solve the problems of unfavorable wireless communication system popularization and application, high isolation, low loss, etc., achieve good control ability and low production cost , the effect of high isolation

Inactive Publication Date: 2018-08-10
NANJING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In a word, the problem existing in the prior art is that the anti-phase unequal power divider cannot take into account simple structure, low loss, high isolation, small size and good port matching characteristics, which is not conducive to popularization and application in modern wireless communication systems

Method used

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  • Anti-phase Unequal Power Splitter Based on Parallel Coupling Structure
  • Anti-phase Unequal Power Splitter Based on Parallel Coupling Structure
  • Anti-phase Unequal Power Splitter Based on Parallel Coupling Structure

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Embodiment 1

[0043] The structure of the inverted unequal power divider based on the parallel coupling structure is as figure 1 As shown, the top view is as figure 2 As shown, the relevant dimensions are as image 3 Shown. The dielectric substrate 6 used has a relative dielectric constant of 10.2, a thickness of 0.635 mm, and a loss tangent of 0.0023. Combine image 3 , The size parameters of the power divider are as follows: W p =0.6mm, W 1 =0.9mm, W 2 =0.2mm, W 3 =1.4mm, W 4 =0.2mm, W r =0.7mm, L 1 =11.7mm, L 2 =11.7mm, L 3 =11.1mm, L 4 =11.85mm, L 5 =2.6mm, L r =0.8mm, s 1 = 0.3mm, s 2 = 0.2mm. The unequal inverting power divider does not include the 50 ohm microstrip line and the total area of ​​the conduction band is 16×26.6mm 2 , The corresponding guide wavelength size is 0.34λ g ×0.56λ g , Where λ g Is the guided wave wavelength corresponding to the center frequency of the passband.

[0044] The power divider in this example is modeled and simulated in the electromagnetic simulation s...

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Abstract

The invention discloses an anti-phase unequal power divider based on a parallel coupling structure. The anti-phase unequal power divider includes a rectangular medium substrate of which a lower surface is provided with a metal ground plate. An upper surface of the medium substrate is provided with an input terminal feed line, a first output terminal feed line, and a second output terminal feed line. A first parallel coupling structure and a first 1 / 4 wavelength transmission line are arranged between the input terminal feed line and the first output terminal feed line. A second parallel coupling structure and a second 1 / 4 wavelength transmission line are arranged between the input terminal feed line and the second output terminal feed line. A third 1 / 4 wavelength transmission line, a fourth 1 / 4 wavelength transmission line, and a resistor are also arranged between the first output terminal feed line and the second output terminal feed line. The resistor is connected to the ground plate on the lower surface of the medium substrate through a metal through hole in the medium substrate. The anti-phase unequal power divider has simple structure, low loss, high isolation, and small phase deviation.

Description

Technical field [0001] The invention relates to the technical field of microwave passive devices, in particular to an inverting unequal division power divider based on a parallel coupling structure with simple structure, low loss, high isolation and small phase deviation. Background technique [0002] The power divider, also known as the power divider, plays a very important role in the feeder network of the wireless communication system. In recent years, the research on power dividers has been intensified, especially on the same power divider, while the research on the unequal inverting power divider, which plays an important role in antenna array beamforming, is relatively rare. Unequal power division feeding can effectively suppress the excessive sidelobe level of the antenna, and the differential signal has good anti-noise ability and high signal-to-noise ratio. The traditional radio frequency front-end circuit adopts the method of combining an unequal power divider and an i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P5/12H01P5/16
CPCH01P5/12H01P5/16
Inventor 王雪道刘倩文王建朋黄烽
Owner NANJING UNIV OF SCI & TECH
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