Antenna device and portable radio communication device comprising such an antenna device
First Claim
Patent Images
1. An antenna device for a portable radio communication device operable in at least a first and a second frequency band, the antenna device comprising:
- a first electrically conductive radiating element (10;
110;
210;
310;
410;
510) having a feeding portion (12) connected to a feed device (RF) of the radio communication device;
a second electrically conductive radiating element (20;
120;
220;
320;
420;
520;
) having a grounding portion connectable to ground;
a controllable switch (30) arranged between the first and second radiating elements for selectively interconnecting and disconnecting the radiating elements, the state of the switch being controlled by means of a control voltage input (VSwitch);
a first filter (40;
340;
440;
540) arranged between the feeding portion (12) and the control voltage input (VSwitch), wherein the first filter is arranged to block radio frequency signals, characterized by a grounding portion (14) of the first radiating element, and a high pass filter (50) arranged between the grounding portion (14) of the first radiating element and ground, wherein the first and second radiating element are generally planar and arranged at a predetermined distance above a ground plane.
6 Assignments
0 Petitions
Accused Products
Abstract
A multi-band antenna device for a portable radio communication device has first and second radiating elements (10, 20). A controllable switch (30) is arranged between the radiating elements for selectively interconnecting and disconnecting thereof. The state of the switch is controlled by means of a control voltage input (VSwitch). A filter (40) that blocks radio frequency signals is arranged between the feeding portion and the control voltage input. A DC blocking arrangement (50) is arranged between a grounding portion (14) on the first radiating element and ground wherein the first and second radiating element are generally planar and arranged at a predetermined distance above a ground plane. By means of this arrangement, two broad and spaced apart frequency bands are obtained with retained performance and small overall size of the antenna device. A communication device comprising such an antenna device is also provided.
73 Citations
16 Claims
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1. An antenna device for a portable radio communication device operable in at least a first and a second frequency band, the antenna device comprising:
-
a first electrically conductive radiating element (10;
110;
210;
310;
410;
510) having a feeding portion (12) connected to a feed device (RF) of the radio communication device;
a second electrically conductive radiating element (20;
120;
220;
320;
420;
520;
) having a grounding portion connectable to ground;
a controllable switch (30) arranged between the first and second radiating elements for selectively interconnecting and disconnecting the radiating elements, the state of the switch being controlled by means of a control voltage input (VSwitch);
a first filter (40;
340;
440;
540) arranged between the feeding portion (12) and the control voltage input (VSwitch), wherein the first filter is arranged to block radio frequency signals,characterized by a grounding portion (14) of the first radiating element, and a high pass filter (50) arranged between the grounding portion (14) of the first radiating element and ground, wherein the first and second radiating element are generally planar and arranged at a predetermined distance above a ground plane. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A portable radio communication device, comprising a generally planar printed circuit board and an antenna device connected to a feed device (RF) with electronic circuits provided for transmitting and/or receiving RF signals, and a ground device, wherein the antenna device comprises:
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a first electrically conductive radiating element (10;
110;
210;
310;
410;
510) having a feeding portion (12) connected to the feed device (RF);
a second electrically conductive radiating element (20;
120;
220;
320;
420;
520) having a grounding portion connected to the ground device;
a controllable switch (30) arranged between the first and second radiating elements for selectively interconnecting and disconnecting the radiating elements, the state of the switch being controlled by a means of a control voltage input (VSwitch);
a first filter (40;
340;
440;
540) arranged between the feeding portion (12) and the control voltage input (VSwitch), wherein the first filter is arranged to block radio frequency signals,characterized by a grounding portion (14) of the first radiating element, and a high pass filter (50) arranged between the grounding portion (14) of the first radiating element and ground, wherein the first and second radiating element are generally planar and arranged at a predetermined distance above a ground plane.
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Specification
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Current AssigneeSamsung Electronics Co. Ltd.
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Original AssigneeAMC Centurion AB
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InventorsOstervall, Torsten, Thornell-Pers, Anders
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Granted Patent
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Time in Patent OfficeDays
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Field of Search
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US Class Current343/702
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CPC Class CodesH01Q 1/243 with built-in antennasH01Q 9/0421 with a shorting wall or a s...H01Q 9/0442 with particular tuning meansH01Q 9/14 Length of element or elemen...
