Antenna device

Patent metadata

Field	Value
Publication number	US-11862873-B2
Application number	US-202117557369-A
Country	US
Kind code	B2
Filing date	Dec 21, 2021
Priority date	Dec 28, 2020
Publication date	Jan 2, 2024
Grant date	Jan 2, 2024

Abstract

An antenna device includes a first conductor corresponding to communication in a first frequency band, a ground conductor that faces the first conductor, and a second conductor that is disposed between the first conductor and the ground conductor, faces the first conductor and the ground conductor, and has a power supply point. The second conductor is disposed so as to face one end side of the first conductor in an upper-lower direction of the first conductor. The first conductor has a slot disposed at a position facing the other end side opposite to the second conductor, the slot corresponding to communication in a second frequency band that is different from the first frequency band.

First claim

What is claimed is:

1. An antenna device comprising:
a first conductor corresponding to communication in a first frequency band;
a ground conductor that faces the first conductor; and
a second conductor that is disposed between the first conductor and the ground conductor, faces the first conductor and the ground conductor, and has a power supply point,
wherein the second conductor is disposed so as to face one end side of the first conductor in an upper-lower direction of the first conductor,
wherein the first conductor has a slot disposed at a position facing another end side opposite to the second conductor, the slot corresponding to communication in a second frequency band that is different from the first frequency band,
wherein the slot has a length equal to or less than ½ of a wavelength corresponding to the second frequency band in a direction parallel to a long-side direction of the first conductor, and
wherein the first conductor has a length equal to or less than ½ of a wavelength corresponding to the first frequency band in the direction parallel to the long-side direction of the first conductor.

2. The antenna device according to claim 1 ,
wherein the first frequency band corresponding to the first conductor is lower than the second frequency band corresponding to the slot.

3. The antenna device according to claim 1 ,
wherein the slot is disposed at a position on the first conductor that faces a position away from the power supply point by a distance of ¼ of the wavelength corresponding to the second frequency band.

4. The antenna device according to claim 1 ,
wherein the second conductor includes a stub conductor having an impedance matching an impedance of the first conductor, and
wherein the first conductor is electrically connected to the stub conductor via the power supply point that is disposed at one end side of the stub conductor.

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Hamabe Taichi

Classifications

• H01Q9/0407 Primary

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

• H01Q13/10

  Resonant slot antennas · CPC title

• H01Q21/064

  using horn or slot aerials (slotted waveguides arrays H01Q21/005) · CPC title

• H01Q21/24

  Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction {(circularly polarised patch antennas H01Q9/0428; circularly polarised horns H01Q13/0241; cross-polarised horns H01Q13/0258; polarisation converters H01Q15/242; cross-polarised rear feeds H01Q19/136; crossed polarisation dual antenna H01Q25/001)} · CPC title