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Substrate integrated waveguide inclined slot directional coupler

A substrate-integrated waveguide and coupler technology, applied in waveguide devices, electrical components, connecting devices, etc., can solve the problems of poor anti-interference and affecting the performance of microstrip couplers, and achieve good electrical performance and low loss. Effect

Inactive Publication Date: 2010-05-05
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when working at high frequencies, the performance of the microstrip coupler is greatly affected by factors such as the loss and discontinuity of the microstrip line, and its anti-interference is also poor, so it is necessary to find a strong anti-interference High performance, low loss, small size and light weight microwave and millimeter wave directional coupler

Method used

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  • Substrate integrated waveguide inclined slot directional coupler
  • Substrate integrated waveguide inclined slot directional coupler
  • Substrate integrated waveguide inclined slot directional coupler

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A substrate-integrated waveguide oblique slot coupler, comprising: a first substrate-integrated waveguide 1 and a second substrate-integrated waveguide 2, and the first substrate-integrated waveguide 1 and the second substrate-integrated waveguide 2 are vertically orthogonal Stacked, a first inclined coupling slot 3 is provided on the lower wide wall of the first substrate integrated waveguide 1 located above, and a second inclined coupling slot 3 is provided on the upper wide wall of the second substrate integrated waveguide 2 located below. The first oblique coupling slot 3 completely overlaps the second oblique coupling slot 4 . In this example:

[0018] At least one row of first oblique coupling slots 3 is provided on the lower wide wall of the first substrate integrated waveguide 1 located above, each row of first oblique coupling slots 3 has at least three and each row of first oblique coupling slots 3 is parallel to each other , at least one row of second obliqu...

Embodiment 2

[0025] We realized the substrate-integrated waveguide oblique slot coupler introduced above at 15GHz. The dielectric constant of the medium is 2.2, and the height of the substrate integrated waveguide is 0.5mm.

[0026] The specific design parameters are shown in the table below

[0027]

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Abstract

The invention relates to a substrate integrated waveguide inclined slot directional coupler, which comprises a first substrate integrated waveguide and a second substrate integrated waveguide, wherein the first substrate integrated waveguide and the second substrate integrated waveguide are crossed and stacked respectively at the top and the bottom. A first inclined coupling slit is arranged on a lower wide wall of the first substrate integrated waveguide at the top, a second inclined coupling slit is arranged on an upper wide wall of the second substrate integrated waveguide at the bottom, and the first inclined coupling slit and the second inclined coupling slit are fully overlapped. The inclined slits in the coupling region are equivalent to a circuit formed by connecting a resistor and a reactor in parallel, and are equivalent to a pure resistor when the inclined slits are in resonance, i.e. the maximum energy can be realized through coupling. Energy input through an input port is separated to a straight end, a coupling end and an isolating end when passing through the coupling region. The length of the slits and the inclination angle are adjusted according to different requirements of coupling degree and isolating degree, therefore, the inclined slits can be in resonance to get satisfactory port standing waves.

Description

technical field [0001] The invention relates to a substrate-integrated waveguide oblique slit directional coupler, which is applied to a microwave and millimeter wave hybrid circuit and a microwave and millimeter wave integrated circuit, and belongs to microwave and millimeter wave technology. Background technique [0002] In the microwave system, the directional coupler is a widely used microwave device, which can be used for various purposes such as modems, power amplifiers, balanced mixers, and system power detection. There are many structural forms of the waveguide directional coupler. As far as the form of the coupling structure is concerned, there are holes, slots, and gaps. Rectangular waveguide branch coupler, as a relatively classic form, has been widely used in radar systems. Its main advantage is its large power capacity and is suitable for use in high-power transmitters. Its main disadvantage is its bulky size. Since the advent of microstrip lines and striplines...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P5/18
Inventor 华光洪伟陈德挺
Owner SOUTHEAST UNIV