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Half-module substrate integrated waveguide leaky-wave antenna

A half-mode substrate integration, leaky wave antenna technology, applied in antennas, slot antennas, waveguide openings, etc., can solve the problems of surface wave mode or parasitic mode, large loss, etc.

Inactive Publication Date: 2009-09-16
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the millimeter wave frequency band, the printed leaky wave antenna based on microstrip or coplanar waveguide has problems such as large loss and surface wave mode or spurious mode due to the openness of its own structure.

Method used

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  • Half-module substrate integrated waveguide leaky-wave antenna
  • Half-module substrate integrated waveguide leaky-wave antenna
  • Half-module substrate integrated waveguide leaky-wave antenna

Examples

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Embodiment Construction

[0024] Embodiments of the present invention are as follows: adopt the half-mode substrate integrated waveguide 9 of the leaky wave part that the width reduces to realize effective leaky wave radiation; The metal surface 2 is located on the half-mode substrate integrated waveguide 7 of normal width, the half-mode substrate integrated waveguide 8 with gradually changing width, and the metallized through hole 3 on one side of the half-mode substrate integrated waveguide 9 of the leaky part to connect the upper and lower Metal layer; for the convenience of testing, the input and output terminals are 50 ohm microstrip 5. For a selected operating frequency, the material and its thickness are selected according to key indicators such as the dielectric constant and loss tangent of the dielectric substrate. Reasonable selection of the width of the half-mode substrate integrated waveguide: to avoid the adverse effect of the cut-off characteristics of the waveguide on the performance of ...

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Abstract

A half-module substrate integrated waveguide leaky-wave antenna adopts a double-sided single-layer PCB process, utilizes upper and lower metal surfaces and a lateral metalized through hole array to realize trapping electromagnetic waves and realize effective leaky-wave radiation on an opening surface. The half-module substrate integrated waveguide leaky-wave antenna adopts half-module substrate integrated waveguide of a leaky-wave part (9) with reduced width to realize the effective leaky-wave radiation; in the antenna, the bottom layer of a dielectric substrate (1) completely covers the lower metal surface (4), and the top layer of the dielectric substrate (1) covers the upper metal surface (2); a metalized through hole (3) positioned at one side of half-module substrate integrated waveguide (7) positioned in normal width, half-module substrate integrated waveguide with gradient width (8) and the half-module substrate integrated waveguide of the leaky-wave part (9) connects the upper and lower metal layers; and for convenient detection, the input and output ends of the antenna are 50 ohm micro-strips (5).

Description

technical field [0001] The invention is a novel leaky wave antenna, which can be applied to microwave and millimeter wave automobile communication or indoor communication. The designed half-mode substrate integrated waveguide leaky-wave antenna belongs to the field of microwave antenna manufacture. Background technique [0002] Leaky-wave antennas are an important class of traveling-wave antennas. In the millimeter wave frequency band, the printed leaky wave antenna based on microstrip or coplanar waveguide has problems such as large loss and surface wave mode or parasitic mode due to the openness of its own structure. Emerging substrate-integrated waveguides, a planar waveguide structure that seals electromagnetic waves inside, can be effectively applied to millimeter-wave frequency bands. It has the advantages of easy processing, low cost, low loss, and easy integration with other planar circuits. The half-mode substrate-integrated waveguide can reduce the area by nearly...

Claims

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Application Information

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IPC IPC(8): H01Q13/10H01Q13/06H01Q13/08H01Q15/08
Inventor 洪伟徐俊峰汤红军蒯振起
Owner SOUTHEAST UNIV
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