High performance antenna for hand-held and portable equipment
First Claim
1. A portable electronic apparatus having a housing made, at least in part, of insulating material, and incorporating an antenna comprising an active element and a ground plane, said active element comprising a length of conductive material disposed parallel to the ground plane and fed from one end;
- wherein the antenna is mounted on a sheet of insulating material forming part of said housing, and comprises a first rectangular sheet of conductive material forming said ground plane, and a second, elongate, rectangular sheet of conductive material forming said active element; and
wherein the housing is in two sections which are movable with respect to one another, and wherein said sheet of insulating material forms part of one of said sections, and wherein the other section contains electronic circuitry which is electrically connected to said antenna; and
wherein said other section includes a second antenna which is likewise electrically connected to said electronic circuitry; and
wherein both antennae are connected to said electronic circuitry via the same node; and
wherein said antennae are electrically mismatched as seen by the electronic circuitry; and
wherein a mechanical tuning element is attached for movement with one of said sections of the housing, said tuning element being positioned such that as the two sections are moved with respect to one another, the element detunes one of the antennae, but not the other, thus introducing an electrical mismatch between them.
2 Assignments
0 Petitions
Accused Products
Abstract
An antenna system for portable electronic apparatus, particularly for the handset of a cordless telephone system, and comprising two antenna, a first (shown) mounted on a flap (2) and comprising a groundplane 5 and active monopole 4 fed by a coaxial feed 6 from electronic circuitry (not shown) in the main section of the handset 1. The flap is pivotally connected to the main section of the housing 1, and is folded down against the main section when not in use. Another similar antenna is fitted in the main section, and both antennae are connected to the transceiver circuitry via the same node. The two antennae are specially designed so as to introduce deliberate mismatch so as to provide an effective switching system between the two antenna without the need for separate circuit elements.
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Citations
12 Claims
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1. A portable electronic apparatus having a housing made, at least in part, of insulating material, and incorporating an antenna comprising an active element and a ground plane, said active element comprising a length of conductive material disposed parallel to the ground plane and fed from one end;
- wherein the antenna is mounted on a sheet of insulating material forming part of said housing, and comprises a first rectangular sheet of conductive material forming said ground plane, and a second, elongate, rectangular sheet of conductive material forming said active element; and
wherein the housing is in two sections which are movable with respect to one another, and wherein said sheet of insulating material forms part of one of said sections, and wherein the other section contains electronic circuitry which is electrically connected to said antenna; and
wherein said other section includes a second antenna which is likewise electrically connected to said electronic circuitry; and
wherein both antennae are connected to said electronic circuitry via the same node; and
wherein said antennae are electrically mismatched as seen by the electronic circuitry; and
wherein a mechanical tuning element is attached for movement with one of said sections of the housing, said tuning element being positioned such that as the two sections are moved with respect to one another, the element detunes one of the antennae, but not the other, thus introducing an electrical mismatch between them. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 11, 12)
- wherein the antenna is mounted on a sheet of insulating material forming part of said housing, and comprises a first rectangular sheet of conductive material forming said ground plane, and a second, elongate, rectangular sheet of conductive material forming said active element; and
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2. A portable electronic apparatus having a housing made, at least in part, in insulating material, and incorporating an antenna comprising an active element and a ground plane, said active element comprising a length of conductive material disposed parallel to the ground plane and fed from one end;
- wherein the antenna is mounted on a sheet of insulating material forming part of said housing, and comprises a first rectangular sheet of conductive material forming said ground plane, and a second, elongate, rectangular sheet of conductive material forming said active element; and
wherein the housing is in two sections which are movable with respect to one another, and wherein said sheet of insulating material forms part of one of said sections, and wherein the other section contains electronic circuitry which is electrically connected to said antenna; and
wherein said other section includes a second antenna which is likewise electrically connected to said electronic circuitry; and
wherein both antennae are connected to said electronic circuitry via the same node; and
wherein, in a first relative position of said sections, said antenna is spaced from said electronic circuitry, and is well matched electrically to said electronic circuitry in this position and wherein, in a second relative position of said sections, said antenna is relatively closer to said electronic circuitry such that its proximity to said electronic circuitry detunes the antenna and causes it to be electrically mismatched to said electronic circuitry. - View Dependent Claims (10)
- wherein the antenna is mounted on a sheet of insulating material forming part of said housing, and comprises a first rectangular sheet of conductive material forming said ground plane, and a second, elongate, rectangular sheet of conductive material forming said active element; and
Specification