Multiband antenna device integrated with a housing such as a vehicle multimedia system
View Patent ↗A multi-band antenna device intended to be integrated into a metal housing, especially into a multimedia system of an automotive vehicle, including a first, hook-shaped, antenna part linked to a feed intended to be positioned on a printed circuit and to be situated inside the metal housing, a second antenna part having an opening made in a face of the metal housing, the opening exhibiting a hook shape identical to that of the first antenna part, with the same dimensions, and the opening being situated opposite the first antenna part, in a plane parallel to that of said first antenna part, rotated by 90° with respect to said first antenna part.
1. A multi-band antenna device intended to be integrated into a metal housing, into a multimedia system of an automotive vehicle, comprising:
a first, hook-shaped, antenna part linked to a feed adapted to be positioned on a printed circuit and to be situated inside the metal housing,
a second antenna part comprising an opening made in a face of the metal housing, said opening exhibiting a hook shape identical to that of the first antenna part, with the same dimensions, and said opening being situated opposite the first antenna part, in a plane parallel to that of said first antenna part, rotated by 90° with respect to said first antenna part.
2. The multi-band antenna device as claimed in claim 1 , wherein said hook shape comprises three coplanar consecutive segments, each segment of the hook shape being orthogonal to each of the contiguous segments.
3. The multi-band antenna device as claimed in claim 2 , wherein the face of the metal housing comprising the opening forming the second antenna part and the printed circuit receiving the first antenna part are separated by a distance adjustable as a function of the matching obtained of the antenna device.
4. The multi-band antenna device as claimed in claim 1 , wherein the face of the metal housing comprising the opening forming the second antenna part and the printed circuit receiving the first antenna part are separated by a distance adjustable as a function of the matching obtained of the antenna device.
5. The multi-band antenna device as claimed in claim 1 , wherein the opening is made in a face of an underside of the metal housing in a situation of use.
6. A multi-band antenna device intended to be integrated into a metal housing, into a multimedia system of an automotive vehicle, comprising:
a first, hook-shaped, antenna part linked to a feed adapted to be positioned on a printed circuit and to be situated inside the metal housing, and
a second antenna part comprising an opening made in a face of the metal housing, said opening exhibiting a hook shape identical to that of the first antenna part, with the same dimensions, and said opening being situated opposite the first antenna part, in a plane parallel to that of said first antenna part, rotated by 90° with respect to said first antenna part,
wherein the multi-band antenna device is configured to radiate in two frequency bands starting from a first frequency corresponding to a first wavelength λ and, respectively, from a second frequency, greater than the first frequency, corresponding to a second wavelength λ′, the hook shape being formed of three segments, the lengths of said three segments and said first and second wavelengths being configured in such a way that the segments are formed of a first segment, connected to the feed, measuring λ′/4, of a second segment measuring λ′/8 and of a third segment measuring λ′/6, the sum of the lengths of the three segments being equal to λ/4.
7. The multi-band antenna device as claimed in claim 6 , wherein the first frequency equals 2.4 GHz and the second frequency equals 5 GHz.
8. The multi-band antenna device as claimed in claim 7 , configured to allow wireless communication in accordance with Bluetooth® protocol in the frequency band 2.400 GHz-2.485 GHz and to allow Wifi® communication in the two bands 2.400 GHz-2.485 GHz and 5.00 GHz-5.85 GHz.
9. A multimedia system for integration into an automotive vehicle central console, comprising a metal housing exhibiting an underside face situated toward the bottom once the multimedia system has been integrated into an automotive vehicle central console, said metal housing comprising a powered printed circuit, wherein the metal housing comprises a multi-band antenna device comprising:
a first, hook-shaped, antenna part linked to a feed adapted to be positioned on a printed circuit and to be situated inside the metal housing, and
a second antenna part comprising an opening made in a face of the metal housing, said opening exhibiting a hook shape identical to that of the first antenna part, with the same dimensions, and said opening being situated opposite the first antenna part, in a plane parallel to that of said first antenna part, rotated by 90° with respect to said first antenna part.
10. A multi-band antenna device intended to be integrated into a metal housing, into a multimedia system of an automotive vehicle, comprising:
a first, hook-shaped, antenna part linked to a feed adapted to be positioned on a printed circuit and to be situated inside the metal housing, and
a second antenna part comprising an opening made in a face of the metal housing, said opening exhibiting a hook shape identical to that of the first antenna part, with the same dimensions, and said opening being situated opposite the first antenna part, in a plane parallel to that of said first antenna part, rotated by 90° with respect to said first antenna part,
wherein said hook shape comprises three coplanar consecutive segments, each segment of the hook shape being orthogonal to each of the contiguous segments, and
wherein the multi-band antenna device is configured to radiate in two frequency bands starting from a first frequency corresponding to a first wavelength λ and, respectively, from a second frequency, greater than the first frequency, corresponding to a second wavelength λ′, the hook shape being formed of three segments, the lengths of said three segments and said first and second wavelengths being configured in such a way that the segments are formed of a first segment, connected to the feed, measuring λ′/4, of a second segment measuring λ′/8 and of a third segment measuring λ′/6, the sum of the lengths of the three segments being equal to λ/4.
11. A multi-band antenna device intended to be integrated into a metal housing, into a multimedia system of an automotive vehicle, comprising:
a first, hook-shaped, antenna part linked to a feed adapted to be positioned on a printed circuit and to be situated inside the metal housing, and
a second antenna part comprising an opening made in a face of the metal housing, said opening exhibiting a hook shape identical to that of the first antenna part, with the same dimensions, and said opening being situated opposite the first antenna part, in a plane parallel to that of said first antenna part, rotated by 90° with respect to said first antenna part,
wherein the face of the metal housing comprising the opening forming the second antenna part and the printed circuit receiving the first antenna part are separated by a distance adjustable as a function of the matching obtained of the antenna device, and
wherein the multi-band antenna device is configured to radiate in two frequency bands starting from a first frequency corresponding to a first wavelength λ and, respectively, from a second frequency, greater than the first frequency, corresponding to a second wavelength λ′, the hook shape being formed of three segments, the lengths of said three segments and said first and second wavelengths being configured in such a way that the segments are formed of a first segment, connected to the feed, measuring λ′/4, of a second segment measuring λ′/8 and of a third segment measuring λ′/6, the sum of the lengths of the three segments being equal to λ/4.