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Slot array antenna

A technology of array antenna and slot, applied in the field of slot array antenna, can solve troubles and other problems

Inactive Publication Date: 2004-08-25
OKI ELECTRIC IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the direction of the main beam of the antenna is not calibrated, then replacing this adjustment will be a lot of trouble

Method used

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  • Slot array antenna
  • Slot array antenna
  • Slot array antenna

Examples

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Embodiment Construction

[0035] When describing the slot array antenna of the present invention, the structure of the antenna main body will be described first.

[0036] figure 2 It is a perspective view showing the main body of the slot array antenna. The main body of the slot array antenna is composed of a slotted plate 201 and a waveguide plate 202 used as a waveguide. figure 2 A case where the slotted plate 201 and the waveguide plate 202 are separated is shown. The slotted plate 201 is generally formed of a thin conductor plate. A plurality of slits (notches) 203 are provided on the conductor plate. The waveguide plate 202 is provided with rectangular slots 205 so that an input electromagnetic wave from a feed-in port 204 defined on a relatively thick conductor plate can be provided to all the slots 203 provided on the slotted plate 201 . When the slotted plate 201 and the waveguide plate 202 are combined so as to overlap each other, a row of slots 203 can be formed on the waveguide wall in...

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Abstract

A slot array antenna comprises a slot array antenna main body (111) and a dielectric cover (116). The slot array antenna main body (111) has a slot plate (113). A main beam (115) having radiation directivity, extending in a direction inclined a tilt angle theta alone from a direction normal to a plane P1 of the slot plate (113) is set to the slot array antenna main body (111). The dielectric cover (116) has an inclination angle alpha formed by an outer plane P3 and an inner plane P4 and is comprised of a dielectric material having a refractive index n. The inner plane P4 of the dielectric cover (116) is provided so as to oppose to the slot plate (113) of the slot array antenna main body (111). Thus, the main beam (115) having the radiation directivity is transmitted through and refracted by the dielectric cover (116), so that the tilt angle theta is corrected to allow the main beam to extend in a direction orthogonal to the outer plane P3 of the dielectric cover (116).

Description

technical field [0001] The invention relates to a slot array antenna composed of a plurality of element antennas and comprising a slotted plate with a plurality of slots. Background technique [0002] An array antenna is an antenna in which a plurality of element antennas are arranged in a predetermined pattern and has characteristics that are difficult to obtain with a single antenna. Controlling the phase of each element antenna constituting the array antenna can control the directivity of the entire array antenna. Therefore, the array antenna can be used as a beam scanning antenna without mechanically triggering the array antenna body. [0003] Under the circumstance that the wireless communication technology has been significantly developed, the frequency bands allocated for various communication devices have tended to be insufficient in recent years. In order to compensate for this, the efficient use of frequencies and the development of technologies required for conv...

Claims

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Application Information

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IPC IPC(8): H01Q21/06H01Q1/42H01Q13/10H01Q21/00
Inventor 巫·H·霍尔
Owner OKI ELECTRIC IND CO LTD
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