DEVICE FOR RADIATING OR RECEIVING ELECTROMAGNETIC WAVES

• US 20150034825A1
• Filed: 02/12/2013
• Published: 02/05/2015
• Est. Priority Date: 03/08/2012
• Status: Abandoned Application

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Debray, Alexis, Itsuji, Takeaki
• Application Number:
  US14/383,081
• Publication Number:
  US 20150034825A1
• Time in Patent Office: Days
• US Class Current: 250/332
• CPC Class Codes: G01J 2005/106 Arrays
• CPC Class Codes: G01J 5/10 using electric radiation detectors
• CPC Class Codes: H01Q 23/00 Antennas with active circuits or circuit elements integrated within them or attached to them
• CPC Class Codes: H01Q 9/16 with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole H01Q9/44 takes precedence
• CPC Class Codes: H04N 23/11 for generating image signals from visible and infrared light wavelengths

Abstract

The present invention relates to a device for radiating or receiving an electromagnetic wave. The device includes a substrate including a recess coated by a material that reflects the electromagnetic wave, a metal portion that radiates or receives the electromagnetic wave, and an electronic element connected to the metal portion on the substrate. The metal portion includes a portion provided above an opening of the recess and a portion which is located on the substrate and connected to the electronic element.

Claims

1. A device for radiating or receiving an electromagnetic wave, the device comprising:

a substrate configured to include a recess;

a metal portion configured to radiate or receive the electromagnetic wave; and

an electronic element configured to be connected to the metal portion,

wherein the metal portion includes a portion located above the recess and a portion which is located on the substrate and connected to the electronic element, and

wherein the recess includes the bottom portion configured to reflect the electromagnetic wave.

2. The device according to claim 1, wherein the wall of the recess in the substrate includes a metal layer.

4. The device according to claim 1, wherein the recess is filled with a solid dielectric material having a relative permittivity lower than that of a material forming the substrate.

6. The device according to claim 1, wherein a connection portion between a bottom surface and a side surface of the recess is curved.

8. The device according to claim 1, wherein the electronic element is a rectifying element.

9. The device according to claim 1, wherein a frequency of the electromagnetic wave is in a range from 30 GHz to 30 THz.

11. The device according to claim 1, wherein a connection portion for connecting to an external circuit is provided to a node of an electromagnetic field in the metal portion.

12. The device according to claim 11, wherein the connection portion includes a distributed constant filter.

13. The device according to claim 12, wherein the distributed constant filter is formed by a stub provided on the connection portion.

14. The device according to claim 13, wherein the stub is an L-shaped stub and an end portion of the L-shaped stub faces the metal portion.

15. The device according to claim 12, wherein the distributed constant filter is formed by a periodic structure which is arranged along the connection portion and formed of the same material as that of the substrate.

16. The device according to claim 1, wherein a support portion that supports the metal portion is disposed on a node of an electromagnetic field in the metal portion and the support portion is formed of the same material as that of the substrate.

17. The device according to claim 1, wherein the metal portion includes a slit for adjusting a directivity of an electromagnetic wave.

18. The device according to claim 1, wherein there are at least two nodes of an electromagnetic field in the metal portion with respect to an operating wavelength.

19. An image sensor comprising:

a plurality of the devices according to claim 1,

wherein a plurality of the electronic elements is used as an array, and

wherein the image sensor forms an image based on signals from the devices.

21. The device according to claim 1, wherein the electronic element is located on a convex portion (1306, 1406) in the recess.

22. The device according to claim 1, wherein a structure of a metal layer and an insulating layer is located between the substrate and the portion located on the substrate.

23. The device according to claim 21, wherein the convex portion has a bracket shape extending from the edge of the recess.

24. The device according to claim 12, wherein the convex portion has a pillar shape extending from the bottom of the recess.

25. The device according to claim 1, wherein the length of the metal portion located on the substrate is 10% or less than the total length of the metal portion

3. (canceled)

5. (canceled)

7. (canceled)

10. (canceled)

20. (canceled)