Antenna Device

• US 20080030419A1
• Filed: 03/24/2005
• Published: 02/07/2008
• Est. Priority Date: 03/26/2004
• Status: Abandoned Application

• Current Assignee: Perlos Technology Oy
• Original Assignee: Perlos Technology Oy
• Inventors: Sjöblom, Peter
• Application Number:
  US10/594,179
• Publication Number:
  US 20080030419A1
• Time in Patent Office: Days
• US Class Current: 343/853
• CPC Class Codes: H01Q 1/242 specially adapted for hand-held use
• CPC Class Codes: H01Q 1/52 Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure absorbing means H01Q17/00
• CPC Class Codes: H04B 1/0458 Arrangements for matching and coupling between power amplifier and antenna or between amplifying stages matching circuits in general H03H

Abstract

An antenna device for a mobile phone designed for operation in full duplex comprises a transceiver unit (1) having one transmitting subunit (2) and one receiving subunit (3). At least one first antenna (6) is connected to the transmitting subunit (2) via an active matching network (5). At least a second antenna (8), separate and discrete from the first antenna (6), is connected to the receiving subunit (3). In one embodiment there is also an active matching network (11) between the second antenna (8) and the receiving subunit (3). Both the first and the second antennas may comprise more than one radiating element.

Claims

1. An antenna device for a radiocommunications apparatus, for example a cell or mobile telephone, designed for operation in full duplex, comprising:

a transceiver unit (1) and means for radiating and receiving radio waves, said means including an active matching network (5), characterised in that said means for radiating and receiving radio waves includes at least a first antenna element (6) which, via the active matching network (5), is connected to the transmitter subunit (2) of the transceiver unit (1), and at least a second antenna element (8), separate and discrete from the first, which is connected to the receiver subunit (3) of the transceiver unit (1).

2. The antenna device as claimed in claim 1, characterised in that said means for radiating and receiving radio waves includes two or more antenna elements (9, 10) connected via the matching network (5) to the transmitter subunit (2).

3. The antenna device as claimed in claim 1 or 2, characterised in that the first antenna element or elements (6) include a number of radiator elements which are mutually interconnectable and interconnectable to the matching network (5) in a number of alternative combinations.

4. The antenna device as claimed in any of claims 1 to 3, characterised in that said means for radiating and receiving radio waves includes two or more antenna elements connected to the receiver subunit (3) of the transceiver unit (1).

5. The antenna device as claimed in any of claims 1 to 4, characterised in that said means for radiating and receiving radio waves includes a second active matching network connected between the second antenna element or elements (8) and the receiver subunit (3) of the transceiver unit (1).

6. The antenna device as claimed in any of claims 1 to 5, characterised in that the first and second antenna elements (6;

8) are supplied via separate feeding lines (4 and 7, respectively).

7. The antenna device as claimed in any of claims 1 to 6, characterised in that the first antenna element or elements (6) is/are located at the upper end of the mobile telephone while the second antenna element or elements (8) is/are located at the lower end thereof, or vice versa.