Wideband antenna and methods
AssigneePulse Finland Oy
InventorVesna Somero
Life of this patent
Estimating the term…
Abstract
A wideband antenna for use portable radio devices, and methods for operating the same. In one embodiment, a monopole antenna is used within a laptop computing device. The antenna comprises a monopole radiator coupled to an auxiliary ground plane element, and is placed substantially outside of the footprint of the computer display ground plane. In one implementation, the auxiliary ground element is configured not to have electrical connections to the ground plane of the laptop. In another implementation, a solid state switch selectively connects an antenna parasitic element to the main ground thus enabling selective control of the antenna lower frequency operating band.
Claims32
An antenna apparatus for use in a radio device, the radio device operable in a lower frequency band and an upper frequency band and comprising a feed port and a ground plane, said apparatus comprising:
- a monopole radiator;
- a substantially planar auxiliary ground element;
- and
- a switching apparatus disposed between the ground plane and the auxiliary ground element and configured to selectively couple the auxiliary ground element to the ground plane;
- wherein:
- the monopole radiator is coupled at a first location to the feed port via a feed conductor and at a second location to the first auxiliary ground element;
- the auxiliary ground element is disposed substantially external to an outside perimeter of the ground plane;
- and
- the auxiliary ground element is disposed substantially external to an outside perimeter of the monopole radiator.
An antenna apparatus for use in a portable radio device, the portable radio device comprising a feed port and a ground plane, the antenna apparatus comprising:
- a first substantially planar auxiliary ground element having a first dimension and a second dimension;
- a switching apparatus configured to selectively couple the first substantially planar auxiliary ground element to the ground plane;
- and
- a substantially planar radiator element having a third dimension and a fourth dimension and galvanically connected to the feed port at a first location via a feed conductor, and to the first substantially planar auxiliary ground element at a second location;
- wherein both the first substantially planar auxiliary ground element and the substantially planar radiator element are located outside of the ground plane;
- wherein:
- the first substantially planar auxiliary element is disposed substantially external to the ground plane perimeter yet being coplanar to the ground plane;
- the first substantially planar auxiliary element is disposed substantially external to the substantially planar radiator element perimeter yet being coplanar to the substantially planar radiator element;
- the first dimension is substantially perpendicular to the third dimension;
- and
- the first substantially planar auxiliary element is configured to increase antenna bandwidth.
An antenna apparatus for use in a radio device, the radio device comprising a feed and a ground plane, the apparatus comprising:
- a monopole radiator;
- a first substantially planar auxiliary ground element having a first and a second dimension;
- and
- a switching apparatus configured to selectively couple the first substantially planar auxiliary ground element to the ground plane;
- wherein:
- the monopole radiator is grounded to the first substantially planar auxiliary ground element at a ground point and is fed by a feed point by the radio device feed via a feed conductor;
- the first substantially planar auxiliary ground element is disposed substantially external to an outside perimeter of the ground plane;
- and
- the first substantially planar auxiliary ground element is disposed substantially external to an outside perimeter of the monopole radiator.
A portable radio device, comprising:
- a feed port;
- a ground plane;
- and
- an antenna apparatus comprising:
- a radiator;
- a first substantially planar auxiliary ground element having a first and a second dimension;
- and
- a switching apparatus configured to selectively couple the first substantially planar auxiliary ground element to the ground plane;
- wherein:
- the radiator is coupled to the feed port at a first location via a feed conductor, and to the first substantially planar auxiliary ground element at a second location;
- the first substantially planar auxiliary ground element is disposed substantially external to an outside perimeter of the ground plane;
- and
- the first substantially planar auxiliary ground element is disposed substantially external to an outside perimeter of the radiator.
Dependencies are inferred from the claim text.