Circuit integrated antenna

Patent metadata

Field	Value
Publication number	US-12095182-B2
Application number	US-202017912218-A
Country	US
Kind code	B2
Filing date	Apr 20, 2020
Priority date	Apr 20, 2020
Publication date	Sep 17, 2024
Grant date	Sep 17, 2024

Abstract

Stub conductors are disposed so as to surround an outer periphery of a patch conductor and be spaced from the patch conductor with a gap positioned between the stub conductors and the patch conductor.

First claim

The invention claimed is:

1. A circuit-integrated antenna comprising:
a patch conductor on a surface of a substrate and configured to radiate a fed electromagnetic field;
a feeder line on the surface of the substrate and configured to feed an input electromagnetic field to the patch conductor;
two slits extending toward an inner side of the patch conductor on both sides of a connection portion between the patch conductor and the feeder line, wherein the two slits are parallel to the feeder line; and
a pair of stub conductors on the surface of the substrate and protruding from both sides of the feeder line, wherein the pair of stub conductors are symmetrically disposed to have the feeder line between the pair of stub conductors so as to surround an outer periphery of the patch conductor and be spaced from the patch conductor with a first gap positioned between the pair of stub conductors and the patch conductor.

2. The circuit-integrated antenna according to claim 1 , wherein:
first ends of the pair of stub conductors are connected to the feeder line; and
second ends of the pair of stub conductors are disposed so as to face each other with a second gap positioned between the second ends on a side opposite to the connection portion with the patch conductor positioned between the second ends and the connection portion.

3. The circuit-integrated antenna according to claim 1 , wherein:
the first gap is connected to first end portions of the two slits.

4. The circuit-integrated antenna according to claim 1 , wherein:
each of the pair of stub conductors is disposed into a strip shape which has a constant width.

5. The circuit-integrated antenna according to claim 1 , wherein the first gap has a constant width.

6. The circuit-integrated antenna according to claim 1 , further comprising:
an upper patch conductor above the patch conductor and the pair of stub conductors.

7. A method of forming a circuit-integrated antenna, the method comprising:
forming a patch conductor on a surface of a substrate, the patch conductor being configured to radiate a fed electromagnetic field;
forming a feeder line on the surface of the substrate, the feeder line being configured to feed an input electromagnetic field to the patch conductor;
forming two slits extending toward an inner side of the patch conductor on both sides of a connection portion between the patch conductor and the feeder line, wherein the two slits are parallel to the feeder line; and
forming a pair of stub conductors on the surface of the substrate and protruding from both sides of the feeder line, wherein the pair of stub conductors are symmetrically disposed to have the feeder line between the pair of stub conductors so as to surround an outer periphery of the patch conductor and be spaced from the patch conductor with a first gap positioned between the pair of stub conductors and the patch conductor.

8. The method according to claim 7 , wherein:
first ends of the pair of stub conductors are connected to the feeder line; and
second ends of the pair of stub conductors are disposed so as to face each other with a second gap positioned between the second ends on a side opposite to the connection portion with the patch conductor positioned between the second ends and the connection portion.

9. The method according to claim 7 , wherein:
the first gap is connected to first end portions of the two slits.

10. The method according to claim 7 , wherein:
each of the pair of stub conductors is disposed into a strip shape which has a constant width.

11. The method according to claim 7 , wherein the first gap has a constant width.

12. The method according to claim 7 , further comprising:
forming an upper patch conductor above the patch conductor and the pair of stub conductors.

Assignees

• Nippon Telegraph & Telephone

Inventors

• Itami Go
• Hamada Hiroshi
• Nosaka Hideyuki

Classifications

• H01Q13/08

  Radiating ends of two-conductor microwave transmission lines, e.g. of coaxial lines, of microstrip lines · CPC title

• H01Q1/40

  Radiating elements coated with or embedded in protective material · CPC title

• H01Q5/357

  using a single feed point · CPC title

• H01Q9/0407

  Substantially flat resonant element parallel to ground plane, e.g. patch antenna (dipole H01Q9/285; monopole H01Q9/40) · CPC title

• H01Q1/2283

  mounted in or on the surface of a semiconductor substrate as a chip-type antenna or integrated with other components into an IC package · CPC title