Narrow-band filtering multi-channel equal power divider based on high frequency printed circuit board

A printed circuit board and narrow-band filtering technology, applied in the field of microwave communication, can solve the problems of transmission peak splitting, difficulty in miniaturization, etc., and achieve the effect of low cost and simple process

Inactive Publication Date: 2012-07-04
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult to miniaturize because its size is proportional to the microwave wavelength
Moreover, when the outgoing coupling arm and the incident coupling arm are asymmetrical, that is, when the phase is mismatched, the transmission peak will be split, resulting in the inability to achieve equal power distribution at the original frequency.

Method used

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  • Narrow-band filtering multi-channel equal power divider based on high frequency printed circuit board
  • Narrow-band filtering multi-channel equal power divider based on high frequency printed circuit board
  • Narrow-band filtering multi-channel equal power divider based on high frequency printed circuit board

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Experimental program
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Effect test

Embodiment 1

[0022] The present invention realizes the zero effective refractive index material of specific frequency (we call it Balanced CRLH microstrip line loop) by loading specific lumped capacitance in series and parallel loading specific lumped inductance on the microstrip line loop.

[0023] Condition: When the ratio of the loaded inductance value to the loaded capacitance value is equal to the ratio of the distributed inductance to the distributed capacitance of the microstrip line (the square of the characteristic impedance of the microstrip line), at a specific frequency f 0 , its average refractive index is zero. At this time, only microwave signals of this frequency can be transmitted through the Balanced CRLH microstrip line ring, and coupled out from the coupling arm rotating at any angle around it, while electromagnetic waves of other frequencies cannot pass through. Because the structure size of the microstrip loop made of equivalent zero-refractive index material has noth...

Embodiment 2

[0028] Such as Figure 5 As shown, a narrow-band filter multi-channel equal-power splitter based on a high-frequency printed circuit board, the equal-power splitter includes a microstrip line metal base plate made of copper, an epoxy resin composite glass with a dielectric constant of 4.7 Dielectric made of fiber, microstrip line loop, two inductors, one incident coupling arm, and three outgoing coupling arms. The medium is set on the metal base plate of the microstrip line. The microstrip line ring is composed of four fan rings made of copper and four capacitors interlaced. The microstrip line ring is fixed on the medium, and holes are opened on the medium where two of the opposite fan rings are located. An inductance is arranged inside each, and the two ends of the inductance are respectively connected with the microstrip line ring and the metal base plate. The incident coupling arm is arranged on the medium and is coupled and connected with the microstrip line ring, and t...

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Abstract

The invention relates to a narrow-band filtering multi-channel equal power divider based on a high frequency printed circuit board, which comprises a microstrip line metal base board, a medium, a microstrip line ring, a plurality of lumped inductors, an incoming coupling arm and at least one emission coupling arm. The medium is arranged on the microstrip line metal base board, the microstrip line ring is formed by connecting a plurality of fan-shaped rings and a plurality of capacitors in a stagger mode, the microstrip line ring is fixedly arranged on the medium, holes are arranged on the medium at the positions of at least two fan-shaped rings, the capacitors are arranged in the holes, two ends of the capacitors are respectively connected with the microstrip line ring and the metal plate, the incoming coupling arm is arranged on the medium and connected with the microstrip line ring in a coupling mode, the emission coupling arm is arranged on the medium and connected with the microstrip line ring in a coupling mode. Compared with the prior art, the narrow-band filtering multi-channel equal power divider can achieve miniaturization, can conduct narrow-band filtering and equal power distribution, and is simple in process, low in cost and the like.

Description

technical field [0001] The invention relates to the field of microwave communication, in particular to a narrow-band filter multi-channel equal-power splitter based on a high-frequency printed circuit board. Background technique [0002] Microstrip line loop filter is a common narrow-band filter, which is simple in structure and easy to manufacture, so it is widely used in the field of microwave communication. However, it is difficult to miniaturize because its size is proportional to the microwave wavelength. Moreover, when the output coupling arm and the input coupling arm are asymmetrical, that is, when the phase is mismatched, the transmission peak will be split, so that it cannot achieve equal power distribution at the original frequency. Therefore, designing a narrow-band filter multi-channel equal power splitter based on the microstrip line loop with both miniaturization and equal power distribution characteristics will have important theoretical reference value and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P5/12
Inventor 张丽宏李云辉江海涛陈鸿
Owner TONGJI UNIV
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