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US 9,960,479 B2Granted
Antenna device and electronic device
AssigneeFujitsu Limited
InventorYohei Koga
Life of this patent
Estimating the term…
Abstract
An antenna device includes a ground plane configured to have an end side; a ground element configured to have a first end and a second end; a first radiation element configured to have a first line extending upright with respect to the ground element from a grounded end, a second line coupled to the first line, and a feed point; a second radiation element configured to have a third line, and a fourth line coupled to the third line; a first parasitic element configured to have a first parasitic line, and a second parasitic line coupled to the first parasitic line and extending along the ground element toward the first end; and a second parasitic element configured to have a fifth line located close to a tip of the second parasitic line, and a sixth line extending along the ground element from a tip of the fifth line.
Claims10
An antenna device comprising:
- a ground plane configured to have an end side;
- a ground element configured to have a first end and a second end coupled to the ground plane and extend along the end side so that a slit having an open end on the side of the first end is formed between the ground element and the ground plane in planar view;
- a first radiation element configured to have a first line extending upright with respect to the ground element from a grounded end located close to the first end and coupled to the ground element, a second line coupled to the first line and extend along the ground element toward the second end to an end portion opposite to the grounded end, and a feed point located at the end portion of the second line;
- a second radiation element configured to have a third line coupled to the end portion of the first radiation element and extend along the ground element toward the second end, and a fourth line coupled to the third line and extending toward a direction where the fourth line is separated from the ground plane;
- a first parasitic element configured to have a first parasitic line extending from the second end toward a direction where the first parasitic line is separated from the ground plane in planar view, and a second parasitic line coupled to the first parasitic line and extending along the ground element toward the first end;
- and
- a second parasitic element configured to have a fifth line located close to a tip of the second parasitic line and extending from a portion between the first end and the second end toward a direction where the fifth line is separated from the ground plane, and a sixth line extending along the ground element from a tip of the fifth line toward the first end,
- wherein a length from the feed point through the first radiation element, the grounded end, the second end, and the end side to the open end of the slit is equal to a half of a wavelength corresponding to a first communication frequency,
- wherein the total length of the fifth line and the sixth line is equal to one fourth of a wavelength corresponding to a second communication frequency,
- wherein the total of a length from an end portion of the fourth line of the second radiation element to the feed point and a length from a ground potential point located on the ground element and corresponding to the feed point to an end portion of the second parasitic line of the first parasitic element is equal to a half of a wavelength corresponding to a third communication frequency higher than the first communication frequency, and
- wherein the total length of the third and fourth lines of the second radiation element is equal to one fourth of a wavelength corresponding to a fourth communication frequency higher than the third communication frequency.
8 more elements
An electronic device comprising:
- an enclosure;
- and
- an antenna device being arranged in the enclosure, including:
- a ground plane configured to have an end side;
- a ground element configured to have a first end and a second end coupled to the ground plane and extend along the end side so that a slit having an open end on the side of the first end is formed between the ground element and the ground plane in planar view;
- a first radiation element configured to have a first line extending upright with respect to the ground element from a grounded end located close to the first end and coupled to the ground element, a second line coupled to the first line and extend along the ground element toward the second end to an end portion opposite to the grounded end, and a feed point located at the end portion of the second line;
- a second radiation element configured to have a third line coupled to the end portion of the first radiation element and extend along the ground element toward the second end, and a fourth line coupled to the third line and extending toward a direction where the fourth line is separated from the ground plane;
- a first parasitic element configured to have a first parasitic line extending from the second end toward a direction where the first parasitic line is separated from the ground plane in planar view, and a second parasitic line coupled to the first parasitic line and extending along the ground element toward the first end;
- and
- a second parasitic element configured to have a fifth line located close to a tip of the second parasitic line and extending from a portion between the first end and the second end toward a direction where the fifth line is separated from the ground plane, and a sixth line extending along the ground element from a tip of the fifth line toward the first end,
- wherein a length from the feed point through the first radiation element, the grounded end, the second end, and the end side to the open end of the slit is equal to a half of a wavelength corresponding to a first communication frequency,
- wherein the total length of the fifth line and the sixth line is equal to one fourth of a wavelength corresponding to a second communication frequency,
- wherein the total of a length from an end portion of the fourth line of the second radiation element to the feed point and a length from a ground potential point located on the ground element and corresponding to the feed point to an end portion of the second parasitic line of the first parasitic element is equal to a half of a wavelength corresponding to a third communication frequency higher than the first communication frequency, and
- wherein the total length of the third and fourth lines of the second radiation element is equal to one fourth of a wavelength corresponding to a fourth communication frequency higher than the third communication frequency.
11 more elements
Dependencies are inferred from the claim text.