Antenna, wireless communication device, and antenna forming method

Patent metadata

Field	Value
Publication number	US-12206190-B2
Application number	US-202318531948-A
Country	US
Kind code	B2
Filing date	Dec 7, 2023
Priority date	Nov 12, 2018
Publication date	Jan 21, 2025
Grant date	Jan 21, 2025

Abstract

Three elements of a first (¼) wavelength element and a second (¼) wavelength element which have a length of (¼) wavelength at an arbitrary frequency designated in advance and a half-wavelength element which has a length of a half-wavelength at the arbitrary frequency are arranged in a three-orthogonal state where those are orthogonal to each other, one end portion of the first (¼) wavelength element is joined to one end portion of the second (¼) wavelength element, another end portion of the second (¼) wavelength element is joined to one end portion of the half-wavelength element, a feeding point for antenna power feeding is arranged in a position in which the one end portion of the first (¼) wavelength element is joined to the one end portion of the second (¼) wavelength element, and an antenna is formed as a one-wavelength twisted Z-shaped three-orthogonal dipole antenna.

First claim

The invention claimed is:

1. An antenna comprising:
a first half-wavelength element, a second half-wavelength element, and a third half-wavelength element that each have a length of a half-wavelength at an arbitrary frequency designated in advance, wherein
the first half-wavelength element, the second half-wavelength element, and the third half-wavelength element are arranged in a three-orthogonal state in which the first half-wavelength element, the second half-wavelength element, and the third half-wavelength element are orthogonal to each other;
an end portion of the first half-wavelength element is joined to a first end portion of the second half-wavelength element,
a second end portion of the second half-wavelength element and an end portion of the third half-wavelength element are arranged in a non-contact state in mutually adjacent positions,
a position of a feeding point for antenna power feeding is arranged in a central position of the third half-wavelength element, and
the antenna is formed as a 1.5-wavelength twisted Z-shaped non-contact three-orthogonal dipole antenna.

Assignees

• Nec Platforms Ltd

Inventors

• Uchida Jun

Classifications

• H01Q9/28

  Conical, cylindrical, cage, strip, gauze, or like elements having an extended radiating surface; Elements comprising two conical surfaces having collinear axes and adjacent apices and fed by two-conductor transmission lines (waveguide horns or mouths H01Q13/00; slot antennas H01Q13/00) · CPC title

• H01Q1/36

  Structural form of radiating elements, e.g. cone, spiral, umbrella; {Particular materials used therewith}(H01Q1/08, H01Q1/14 take precedence) · CPC title

• H01Q19/24

  the primary active element being centre-fed and substantially straight, e.g. H-antenna · CPC title

• H01Q9/26 Primary

  with folded element or elements, the folded parts being spaced apart a small fraction of operating wavelength (resonant loop antennas H01Q7/00) · CPC title

• H01Q1/2291 Primary

  used in Bluetooth® or Wi-Fi® devices of Wireless Local Area Networks [WLAN] (H01Q1/241 takes precedence; WLAN in general H04W) · CPC title