Unlock instant, AI-driven research and patent intelligence for your innovation.

Radiating element, antenna array, and radar

A technology of transmitting elements and antenna arrays, which is applied in the fields of transmitting elements, antenna arrays and radars, can solve the problems of reduced antenna efficiency and increased dielectric loss of microstrip lines, and achieve low loss effects

Inactive Publication Date: 2017-11-28
NIDEC CORP +1
View PDF39 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the frequency of electromagnetic waves transmitted or received by the array antenna is, for example, a high frequency exceeding 30 GHz such as the millimeter wave band, the dielectric loss of the microstrip line increases, and the efficiency of the antenna decreases.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Radiating element, antenna array, and radar
  • Radiating element, antenna array, and radar
  • Radiating element, antenna array, and radar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0183] Figure 12A This is a cross-sectional view showing a part of the structure of the antenna array 400A in Embodiment 1 of the present disclosure. The antenna array 400A has four waveguide assemblies 350A, 350B, 350C, 350D stacked in the Z direction. The waveguide assemblies 350A, 350B, 350C, 350D each have four waveguide parts 122A, 122B, 122C, 122D extending in the Y direction. Figure 12A A cross section passing through the waveguide members 122A, 122B, 122C, and 122D and parallel to the YZ plane in the antenna array 400A is shown. Figure 12B It is a diagram viewing the antenna array 400 from the -Y direction. Such as Figure 12B As shown, the antenna array 400A has a plurality of radiating elements 320 arranged two-dimensionally in the X direction and the Z direction.

[0184] In the following description, when the waveguide assemblies 350A, 350B, 350C, and 350D are not distinguished, they are referred to as "waveguide assemblies 350". The same applies to other ...

Embodiment approach 2

[0221] Figure 19A This is a cross-sectional view showing an antenna array 400C in Embodiment 2 of the present disclosure. The difference between the antenna array 400C of this embodiment and the first embodiment is that the waveguide member 122 in each layer is connected to the feeding layer (refer to Figure 16 ) connected waveguides extending in the Z direction are not waveguides but ridge waveguides.

[0222] The conductive members 310B, 310C, 310D, and 310E among the plurality of conductive members included in the antenna array 400C have an L-shaped cross section parallel to the YZ plane. In this embodiment, the waveguide member 122A and the plurality of conductive rods 124A are connected to the conductive member 310A. The waveguide member 122B and the plurality of conductive rods 124B are connected to the conductive member 310B. The waveguide member 122C and the plurality of conductive rods 124C are connected to the conductive member 310C. The waveguide member 122D a...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

An antenna array according to an embodiment performs at least one of transmission and reception of an electromagnetic wave with a plurality of radiating elements. The antenna array includes a plurality of stacked waveguide components. Each waveguide component includes: an electrically conductive member having an electrically conductive surface; at least one waveguide member having an electrically-conductive waveguide face opposing the electrically conductive surface; and an artificial magnetic conductor extending on both sides of the waveguide member. A waveguiding gap between the waveguide face and the electrically conductive surface is open to an external space at an end of the waveguide face, and defines one of the plurality of radiating elements.

Description

technical field [0001] The present disclosure relates to radiating elements, antenna arrays, and radars. Background technique [0002] Antenna arrays (hereinafter also referred to as "array antennas") in which a plurality of radiating elements (hereinafter also referred to as "antenna elements") are arranged on a line or on a surface are used in various applications such as radar and communication systems. In order to emit electromagnetic waves from the array antenna, it is necessary to supply (power) electromagnetic waves (such as high-frequency signal waves) from a circuit generating electromagnetic waves to each antenna element. This power supply is implemented via waveguides. The waveguide is also used to send electromagnetic waves received by the antenna elements to the receiving circuit. [0003] In the past, microstrip lines were often used to power array antennas. However, when the frequency of electromagnetic waves transmitted or received by the array antenna is,...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01P3/123H01Q1/36H01Q21/12H01Q1/27H01Q1/32G01S13/931
CPCH01P3/123H01Q1/27H01Q1/3233H01Q1/36H01Q21/12H01Q13/06H01Q21/06G01S7/032G01S13/345G01S13/931H01Q13/10H01Q21/0006H01Q21/0087H01Q21/064G01S2013/93276G01S2013/93185H01Q21/0037H01Q21/067
Inventor 一之濑威桐野秀树加茂宏幸北村秀明
Owner NIDEC CORP