Antenna device and communication device

Patent metadata

Field	Value
Publication number	US-12562480-B2
Application number	US-202318207867-A
Country	US
Kind code	B2
Filing date	Jun 9, 2023
Priority date	Jun 10, 2022
Publication date	Feb 24, 2026
Grant date	Feb 24, 2026

Abstract

There are provided an antenna device and a communication device including: a feed antenna connected to a feed point; a loop antenna connected to ground and arranged to surround the feed antenna; and two resonators provided inside the loop antenna and on both sides of the feed antenna in a short direction of the feed antenna. Each of the two resonators is connected to the loop antenna and has an L shape.

First claim

What is claimed is:

1 . An antenna device comprising:
a first antenna element including:
a first feed antenna connected to a feed point;
a first loop antenna connected to a ground and arranged to surround the first feed antenna; and
two first resonators provided inside the first loop antenna and on both sides of the first feed antenna in a short direction of the first feed antenna, each of the two first resonators being connected to the first loop antenna and having an L shape; and
a second antenna element including:
a second feed antenna connected to the feed point;
a second loop antenna connected to the ground and arranged to surround the second feed antenna; and
two second resonators provided inside the second loop antenna and on both sides of the second feed antenna in a short direction of the second feed antenna, each of the two second resonators being connected to the second loop antenna and having the L shape,
wherein the first feed antenna and the second feed antenna are in contact with each other at the feed point.

2 . The antenna device according to claim 1 , wherein
an element length of each of the first and second loop antennas is a length corresponding to a wavelength of a first frequency.

3 . The antenna device according to claim 2 , wherein
in each of the two first resonators, an element length of portions of the first resonators having the L shape is ¼ of a wavelength of a second frequency that is lower than the first frequency, the portions of the first resonators extending in the short direction of the first feed antenna, and in each of the two second resonators, an element length of portions of the second resonators having the L shape is ¼ of the wavelength of the second frequency that is lower than the first frequency, the portions of the second resonators extending in the short direction of the second feed antenna.

4 . The antenna device according to claim 3 , wherein
the first frequency is in a 7 GHz band, and the second frequency is in a 5 GHz band.

5 . A communication device comprising:
the antenna device according to claim 1 .

6 . The communication device according to claim 5 , wherein
the first and second antenna elements are arranged such that at least a part of a surface on which each of the first and second antenna elements is formed face one another.

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Hamabe Taichi

Classifications

• H01Q7/00 Primary

  Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop · CPC title

• H01Q1/50

  Structural association of antennas with earthing switches, lead-in devices or lightning protectors · CPC title

• H01Q21/28

  Combinations of substantially independent non-interacting antenna units or systems {(multiple beam H01Q25/00)} · CPC title

• H01Q5/371

  Branching current paths · CPC title

• H01Q5/35 Primary

  using two or more simultaneously fed points · CPC title