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A substrate integrated waveguide filter coupler based on orthogonal degenerate mode

A substrate-integrated waveguide and coupler technology, applied in waveguide devices, electrical components, connecting devices, etc., can solve the problems of high weight, large size, low PCB and LTCC Q value and power tolerance, and achieve good circuit performance , volume reduction, high integration effect

Pending Publication Date: 2018-12-18
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, PCB and LTCC have disadvantages of low Q value and power tolerance
Due to the advantages of high Q value, dielectric resonator DR is used to design narrow-band filtering ring coupler, but its size and weight are high

Method used

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  • A substrate integrated waveguide filter coupler based on orthogonal degenerate mode
  • A substrate integrated waveguide filter coupler based on orthogonal degenerate mode
  • A substrate integrated waveguide filter coupler based on orthogonal degenerate mode

Examples

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Embodiment

[0033] Such as figure 1 As shown, a substrate-integrated waveguide filter coupler based on an orthogonal degenerate mode, the entire device is composed of an upper metal, an intermediate dielectric substrate and a lower floor, and a metallized via hole 5 is opened on the intermediate dielectric substrate to connect with the upper metal and the lower floor. The subfloors are joined to form the cavity, the invention comprising:

[0034] The three resonant cavities are specifically the first resonant cavity R1, the second resonant cavity R2 and the third resonant cavity R3.

[0035] The four feeding lines are specifically the first feeding line 1 , the second feeding line 2 , the third feeding line 3 and the fourth feeding line 4 .

[0036] Four ports: a first port P1, a second port P2, a third port P3 and a fourth port P4.

[0037] The first, second and third resonant cavities are arranged in a square or circular shape, the first resonant cavity is close to the second and thir...

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Abstract

The invention discloses a substrate integrated waveguide filter coupler based on an orthogonal degenerate mode, which comprises three resonant cavities, four feeder lines and four ports. The functionsof the integrated band-pass filter and the ring coupler are integrated, the cascade connection of two traditional filters and one ring coupler can be replaced in terms of function, and the volume isgreatly reduced. The zero-degree and 180-degree phase difference between the two output ports of the filter coupler is realized by using the forward and reverse electric fields of the quadrature degenerate modes of the substrate integrated waveguides TE102 and TE201. No additional circuits are needed to reduce the circuit complexity. The substrate integrated waveguide filter coupler provided by the invention has good circuit performance and the characteristic of high integration.

Description

technical field [0001] The invention relates to a filter coupler, in particular to a substrate integrated waveguide filter coupler based on an orthogonal degenerate mode. Background technique [0002] In recent years, wireless communication technology has developed rapidly in the industrial and consumer electronics industries, and various high-performance microwave devices are in great demand. Different filters are important components of radio frequency front-end circuits in wireless communication systems, such as couplers, Power splitters and filters, etc. In the RF front-end, a ring coupler and two bandpass filters are usually cascaded to implement filtering and coupling functions, occupying a large volume. Therefore, many scholars conduct research aimed at miniaturizing circuits. Especially in fifth-generation (5G) massive multiple-input multiple-output (MIMO) systems, a large number of filters are required. In order to reduce the volume and construction cost of the c...

Claims

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Application Information

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IPC IPC(8): H01P5/16H01P1/208
CPCH01P1/2088H01P5/16
Inventor 章秀银李慧阳徐金旭
Owner SOUTH CHINA UNIV OF TECH
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