Impedance tuning of transmitting and receiving antennas

• US 8,928,536 B2
• Filed: 07/30/2012
• Issued: 01/06/2015
• Est. Priority Date: 05/29/2009
• Status: Active Grant

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Knudsen, Mikael Bergholz, Bundgaard, Peter, Mueller, Jan-Erik, Pedersen, Gert F., Pelosi, Mauro
• Primary Examiner(s): MANCUSO, HUEDUNG XUAN CAO
• Application Number:
  US13/562,303
• Publication Number:
  US 20120293384A1
• Time in Patent Office: 890 Days
• Field of Search: 343/702, 343/850, 343/853, 343/860, 455/283
• US Class Current: 343/702
• CPC Class Codes: H01Q 1/241 used in mobile communications, e.g. GSM H01Q1/247, H01Q1/248 take precedence
• CPC Class Codes: H01Q 19/005 Patch antenna using one or more coplanar parasitic elements
• 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
• CPC Class Codes: H04B 1/18 Input circuits, e.g. for coupling to an antenna or a transmission line coupling networks between antennas or lines and receivers independent of the nature of the receiver H03H
• CPC Class Codes: H04B 1/40 Circuits

Abstract

The present disclosure relates to impedance tuning of transmitting and receiving antennas.

Claims

1. A device comprising:

a transceiver;

a receiving antenna;

a transmitting antenna;

a receiving branch coupled between the transceiver and the receiving antenna, the receiving branch including a receiving tuning circuit and a first filter, and wherein the receiving tuning circuit matches an impedance of the receiving narrowband antenna with an impedance of a receiving amplifier and further matches the impedance of the receiving antenna with an impedance of the first filter;

a transmitting branch coupled between the transceiver and the transmitting antenna, the transmitting branch including a transmitting tuning circuit, wherein the transmitting tuning circuit matches an impedance of the transmitting antenna with an impedance of a transmitting amplifier;

a control unit to determine the impedance of the receiving amplifier and the impedance of the transmitting amplifier.

2. The device of claim 1, wherein the transmitting branch further includes a second filter, and the transmitting tuning circuit further matches the impedance of the transmitting antenna with an impedance of the second filter.

3. The device of claim 1, wherein the receiving amplifier and the transmitting amplifier are included in the transceiver.

4. The device of claim 1, wherein the receiving amplifier is included in the receiving branch and the transmitting amplifier is included in the transmitting branch.

5. The device of claim 1, wherein the receiving antenna, the transmitting antenna, or a combination thereof, are a planar inverted F antenna (PIFA).

6. The device of claim 1, wherein the transmitting antenna, the receiving antenna, or a combination thereof, have a building height less than or equal to 1 millimeter.

7. The device of claim 1, wherein the receiving tuning circuit matches impedances of the receiving antenna with the impedance of a receiving amplifier across a plurality of frequency ranges, wherein each frequency range is associated with a receiving band of a different wireless communication technology.

8. The device of claim 1, wherein the transmitting tuning circuit matches impedances of the transmitting antenna with the impedance of the transmitting amplifier across a plurality of frequency ranges, wherein each frequency range is associated with a transmitting band of a different wireless communication technology.

9. The device of claim 1, wherein the transmitting antenna includes one or more tuning elements to match an impedance of the narrowband antenna with the impedance of the receiving amplifier.

10. The device of claim 1, wherein the transmitting antenna includes one or more tuning elements to match an impedance of the transmitting antenna with the impedance of the transmitting amplifier.

11. The device of claim 1, wherein the transmitting tuning circuit matches impedances of the transmitting antenna with impedances of a plurality of filters across a plurality of frequency ranges.

12. The device of claim 1, wherein the receiving tuning circuit matches impedances of the receiving antenna with impedances of a plurality of filters across a plurality of frequency ranges.