MULTI-BAND MONOPOLE ANTENNA FOR A MOBILE COMMUNICATIONS DEVICE
First Claim
Patent Images
1. A cellular telephone handset, comprising:
- a device housing;
a display;
a keyboard;
a speaker;
a printed circuit board, the printed circuit board comprising;
a ground plane layer;
a feeding point;
a communication circuitry energized by means of a battery;
wherein the communication circuitry is mounted on the printed circuit board;
wherein the communication circuitry is coupled to the feeding point and to the ground plane layer;
an antenna including an antenna element;
wherein the antenna element operates in cooperation with the ground plane layer;
the antenna element comprising;
a common conductor including a feeding port;
a first longer radiating arm connected to the common conductor;
a second shorter radiating arm connected to the common conductor;
wherein the feeding port is coupled to the feeding point;
wherein an orthogonal projection of a footprint of the antenna element on a plane of the printed circuit board overlaps the ground plane layer in less than fifty percent of an area of said footprint;
wherein the display, the speaker, the printed circuit board, the communication circuitry, and the antenna are arranged inside the device housing; and
wherein the antenna and the cellular telephone handset operate at multiple frequency bands.
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Accused Products
Abstract
A multi-band monopole antenna for a mobile communications device includes a common conductor coupled to both a first radiating arm and a second radiating arm. The common conductor includes a feeding port for coupling the antenna to communications circuitry in a mobile communications device. In one embodiment, the first radiating arm includes a space-filling curve. In another embodiment, the first radiating arm includes a meandering section extending from the common conductor in a first direction and a contiguous extended section extending from the meandering section in a second direction.
2 Citations
20 Claims
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1. A cellular telephone handset, comprising:
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a device housing; a display; a keyboard; a speaker; a printed circuit board, the printed circuit board comprising; a ground plane layer; a feeding point; a communication circuitry energized by means of a battery; wherein the communication circuitry is mounted on the printed circuit board; wherein the communication circuitry is coupled to the feeding point and to the ground plane layer; an antenna including an antenna element; wherein the antenna element operates in cooperation with the ground plane layer;
the antenna element comprising;a common conductor including a feeding port; a first longer radiating arm connected to the common conductor; a second shorter radiating arm connected to the common conductor; wherein the feeding port is coupled to the feeding point; wherein an orthogonal projection of a footprint of the antenna element on a plane of the printed circuit board overlaps the ground plane layer in less than fifty percent of an area of said footprint; wherein the display, the speaker, the printed circuit board, the communication circuitry, and the antenna are arranged inside the device housing; and wherein the antenna and the cellular telephone handset operate at multiple frequency bands. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification