Granted Patent B2

US 10,763,591 · App. 16/550,577 · Granted Sep 1, 2020

Inventors: Hideki Kirino (Kyoto, JP); Hiroyuki Kamo (Kawasaki, JP)

Assignees: NIDEC CORPORATION; WGR CO., LTD.

H01Q21/064H01Q1/3233H01Q1/3266H01Q13/06H01Q13/10H01Q13/20

Abstract

Claims (132)

1. A radio frequency device comprising:

a circuit board having an integrated circuit;

a first electrically conductive member including a first electrically conductive surface;

a second electrically conductive member including a second electrically conductive surface opposing the first electrically conductive surface of the first electrically conductive member;

a third electrically conductive member;

a waveguide member including a ridge on the second electrically conductive member and an electrically conductive waveguide surface which faces, via a gap, the first electrically conductive member and extends along a first direction; and

a plurality of electrically conductive rods arranged on both sides of the waveguide member, each of the plurality of electrically conductive rods including a leading end opposing, via a gap, the first electrically conductive surface and a root connected to the second electrically conductive surface; wherein

the waveguide surface, the plurality of electrically conductive rods and the first electrically conductive surface define a waveguide;

the second electrically conductive member has a third electrically conductive surface at a side opposite to the second electrically conductive surface;

the third electrically conductive member has a fourth electrically conductive surface that faces the third electrically conductive surface;

the integrated circuit includes at least one of a signal processing circuit and a communication circuit;

at least one of a spacing between the first electrically conductive surface and the waveguide surface, and a width of the waveguide surface, varies along the first direction;

the first electrically conductive member, the second electrically conductive member, and the third electrically conductive member are stacked to be a waveguide device; and

the circuit board is stacked as a layer on the waveguide device.

2. The radio frequency device of claim 1 ,

wherein

the second electrically conductive member includes at least one port; and

one end of the waveguide member is adjacent to the at least one port.

3. An antenna device comprising:

the radio frequency device of claim 1 ;

wherein

the first electrically conductive member includes at least one slot being a radiating element which couples to the waveguide.

4. An antenna device comprising:

the radio frequency device of claim 1 ;

wherein

the first electrically conductive member includes at least one slot being a radiating element which couples to the waveguide;

the second electrically conductive member includes at least one port; and

one end of the waveguide member is adjacent to the at least one port.

5. An antenna device comprising:

a circuit board having an integrated circuit;

a first electrically conductive member including a first electrically conductive surface;

a second electrically conductive member including a second electrically conductive surface opposing the first electrically conductive surface of the first electrically conductive member;

a waveguide member including a ridge on the second electrically conductive member and an electrically conductive waveguide surface which faces, via a gap, the first electrically conductive member and extends along a first direction; and

a plurality of electrically conductive rods arranged on both sides of the waveguide member, each of the plurality of electrically conductive rods including a leading end opposing, via a gap, the first electrically conductive surface and a root connected to the second electrically conductive surface; wherein

the waveguide surface, the plurality of electrically conductive rods and the first electrically conductive surface define a waveguide;

the integrated circuit includes at least one of a signal processing circuit and a communication circuit;

at least one of a spacing between the first electrically conductive surface and the waveguide surface, and a width of the waveguide surface, varies along the first direction;

the first electrically conductive member and the second electrically conductive member are stacked to be a waveguide device; and

the circuit board is stacked as a layer on the waveguide device;

the waveguide device includes at least one slot being a radiating element and at least one horn;

the at least one horn is provided either on the first electrically conductive member at a side opposite to the first electrically conductive surface or on the second electrically conductive member at a side opposite to the second electrically conductive surface; and

the at least one slot opens at a bottom of the at least one horn and couples to the waveguide.

6. A radar system comprising:

a circuit board having an integrated circuit;

a first electrically conductive member including a first electrically conductive surface;

a second electrically conductive member including a second electrically conductive surface opposing the first electrically conductive surface of the first electrically conductive member;

a waveguide member including a ridge on the second electrically conductive member and an electrically conductive waveguide surface which faces, via a gap, the first electrically conductive member and extends along a first direction;

a plurality of electrically conductive rods arranged on both sides of the waveguide member, each of the plurality of electrically conductive rods including a leading end opposing, via a gap, the first electrically conductive surface and a root connected to the second electrically conductive surface; and

a radar signal processing apparatus; wherein

the waveguide surface, the plurality of electrically conductive rods and the first electrically conductive surface define a waveguide;

the integrated circuit includes at least one of a signal processing circuit and a communication circuit;

at least one of a spacing between the first electrically conductive surface and the waveguide surface, and a width of the waveguide surface, varies along the first direction;

the first electrically conductive member and the second electrically conductive member are stacked to be a waveguide device;

the circuit board is stacked as a layer on the waveguide device;

the first electrically conductive member includes at least one slot being a radiating element;

the at least one slot couples to the waveguide;

the integrated circuit includes a signal processing circuit;

the radar signal processing apparatus comprises the signal processing circuit; and

the signal processing circuit generates a beat signal from a reception signal, and converting the reception signal of analog format into a reception signal of digital format.

7. The radar system of claim 6 , wherein

the first electrically conductive member has at least one horn at a side opposite to the first electrically conductive surface; and

the at least one slot opens at a bottom of the at least one horn.

8. The radar system of claim 7 , further comprising a third electrically conductive member;

wherein

one end of the waveguide member is adjacent to the port;

the second electrically conductive member has a third electrically conductive surface at a side opposite to the second electrically conductive surface;

the third electrically conductive member has a fourth electrically conductive surface that faces the third electrically conductive surface; and

the first electrically conductive member, the second electrically conductive member and the third electrically conductive member are stacked to be the waveguide device.

9. A radar system comprising:

the antenna device of claim 5 ; and

a radar signal processing apparatus; wherein

the integrated circuit includes a signal processing circuit;

the radar signal processing apparatus comprises the signal processing circuit; and

the signal processing circuit generates a beat signal from a reception signal, and converts the reception signal of analog format into a reception signal of digital format.

10. A wireless communication apparatus comprising:

the antenna device of claim 5 ; and

at least one of a transmitter and a receiver which are included in the integrated circuit.

11. A wireless communication apparatus comprising:

the antenna device of claim 5 ;

a third electrically conductive member; and

at least one of a transmitter and a receiver; wherein

the at least one of the transmitter and the receiver is included in the integrated circuit;

the second electrically conductive member includes at least one port;

one end of the waveguide member is adjacent to the port;

the second electrically conductive member has a third electrically conductive surface at a side opposite to the second electrically conductive surface;

the third electrically conductive member has a fourth electrically conductive surface that faces the third electrically conductive surface; and

the first electrically conductive member, the second electrically conductive member and the third electrically conductive member are stacked to be the waveguide device.

12. A radio frequency device comprising:

a first electrically conductive member including a first electrically conductive surface;

a second electrically conductive member including a second electrically conductive surface opposing the first electrically conductive surface of the first electrically conductive member;

a waveguide member including a ridge on the second electrically conductive member and an electrically conductive waveguide surface which faces, via a gap, the first electrically conductive member and extends along a first direction; and

a plurality of electrically conductive rods arranged on both sides of the waveguide member, each of the plurality of electrically conductive rods including a leading end opposing, via a gap, the first electrically conductive surface and a root connected to the second electrically conductive surface; wherein

the waveguide surface, the plurality of electrically conductive rods and the first electrically conductive surface define a waveguide;

at least one of the waveguide surface and the first electrically conductive surface include a plurality of dents or a plurality of bumps;

a depth of at least one of the plurality of dents is different from the depth of another one of the plurality of dents, or a height of at least one of the plurality of bumps is different from a height of another one of the plurality of bumps; and

the first electrically conductive member and the second electrically conductive member are stacked to be a waveguide device.

13. The radio frequency device of claim 12 , wherein

the second electrically conductive member includes at least one port; and

one end of the waveguide member is adjacent to the at least one port.

14. The radio frequency device of claim 12 , further comprising a third electrically conductive member; wherein

the second electrically conductive member includes at least one port;

one end of the waveguide member is adjacent to the at least one port;

the third electrically conductive member has a fourth electrically conductive surface that faces the third electrically conductive surface; and

the first electrically conductive member, the second electrically conductive member and the third electrically conductive member are stacked to be the waveguide device.

15. An antenna device comprising the radio frequency device of claim 12 , wherein

the first electrically conductive member includes at least one slot being a radiating element which couples to the waveguide.

16. An antenna device comprising the radio frequency device of claim 12 , wherein

the first electrically conductive member includes at least one slot being a radiating element which couples to the waveguide;

the second electrically conductive member includes at least one port; and

one end of the waveguide member is adjacent to the port.

17. An antenna device comprising:

the radio frequency device of claim 12 ; wherein

the second electrically conductive member includes at least one slot being a radiating element which couples to the waveguide.

18. An antenna device comprising:

the radio frequency device of claim 12 ; and

a third electrically conductive member; wherein

the second electrically conductive member has a third electrically conductive surface at a side opposite to the second electrically conductive surface;

the third electrically conductive member has a fourth electrically conductive surface that faces the third electrically conductive surface; and

the first electrically conductive member, the second electrically conductive member and the third electrically conductive member are stacked to be the waveguide device.

19. A radar system comprising:

the radio frequency device of claim 12 ; and

a radar signal processing apparatus; wherein

the first electrically conductive member includes at least one slot being a radiating element which couples to the waveguide;

the integrated circuit includes a signal processing circuit;

the radar signal processing apparatus comprises the signal processing circuit; and

the signal processing circuit generates a beat signal from a reception signal, and converting the reception signal of analog format into a reception signal of digital format.

20. A wireless communication apparatus comprising:

the radio frequency device of claim 12 ; and

at least one of a transmitter and a receiver; wherein

the first electrically conductive member includes at least one slot being a radiating element which couples to the waveguide; and

the at least one of the transmitter and the receiver is included in the integrated circuit.

21. The radio frequency device of claim 12 , wherein the plurality of electrically conductive rods include a rod with a width that increases toward the root.

Assignments (2)

Priority Claims (2)

Continuity (7)

Cited By (10)

US 12,224,502 US 12,265,172 US 12,424,767 US 12,456,816 US 12,500,350 US 12,506,272 US 12,537,308 US 12,614,839 US 12,627,020 US 12,695,200