Structure transiting from coplanar waveguide to slot line and applied to multi-layer circuit

A coplanar waveguide and multi-layer circuit technology, applied in the direction of circuits, waveguide devices, electrical components, etc., can solve the problems of complex processing of transition circuit structures, limited application range, difficult integration, etc., and achieve simple structure, easy integration, and realization flattening effect

Inactive Publication Date: 2015-09-30
NANJING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, the transition circuit structure is complex to process and difficult to integrate

Method used

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  • Structure transiting from coplanar waveguide to slot line and applied to multi-layer circuit
  • Structure transiting from coplanar waveguide to slot line and applied to multi-layer circuit
  • Structure transiting from coplanar waveguide to slot line and applied to multi-layer circuit

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Embodiment Construction

[0022] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0023] The present invention provides a transition structure from a coplanar waveguide to a slot line that can be used in a multilayer circuit, such as figure 1 As shown, the dielectric substrate, the central conduction strip of the coplanar waveguide, the metal ground plate on both sides of the central conduction strip of the coplanar waveguide, the slot line, the open branch of the coplanar waveguide, the metal via hole and the first and second metal strips bring. Wherein, the metal via connects the metal ground plate and the first and second metal strips, and is used to reflect the slot line mode in the coplanar waveguide to the slot line mode of the slot line part to be transitioned; the open branch of the coplanar waveguide acts as A phase shifter is used to convert the coplanar waveguide mode to the slot line mode.

[0024] When the circu...

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Abstract

The invention discloses a structure transiting from a coplanar waveguide to a slot line and applied to a multi-layer circuit. The structure is characterized in that an open stub is arranged on the coplanar waveguide on the upper surface of a dielectric substrate, a first metal strip and a second metal strip are arranged on the lower surface of the dielectric substrate, and metal through holes are formed in two ends of each of the first metal strip and the second metal strip, so that the first metal strip and the second metal strip are communicated with metal earth plates on the upper surface of the dielectric substrate. On the basis of traditional transition from the coplanar waveguide to the slot line, the structure is improved, circuit planarization is realized, the circuit can be integrated into a multi-layer circuit structure, and the structure has the better transition characteristic.

Description

technical field [0001] The invention relates to a transition structure from a coplanar waveguide to a slot line that can be used in a multilayer circuit, and belongs to the field of microwave technology. Background technique [0002] As a kind of planar transmission line in microwave integrated circuits, coplanar waveguide has a single-plane structure, is easy to process and integrate, and has low propagation loss when the frequency is high. At the same time, slot line is also a kind of planar transmission line. The corresponding coplanar waveguide to The transition of slot lines has aroused the interest of many researchers. The transition from the traditional coplanar waveguide to the slot line mostly uses an air bridge to connect the metal ground plate of the coplanar waveguide to suppress the parasitic slot line mode in the coplanar waveguide, and the transition from the coplanar waveguide to the slot line is widely used in microwave circuits. In the microwave circuit, ...

Claims

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Application Information

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IPC IPC(8): H01P5/10
Inventor 许锋李丹丹
Owner NANJING UNIV OF POSTS & TELECOMM
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