IMPEDANCE TUNING OF TRANSMITTING AND RECEIVING ANTENNAS

• US 20120293384A1
• Filed: 07/30/2012
• Published: 11/22/2012
• Est. Priority Date: 05/29/2009
• Status: Active Grant

• Current Assignee: Intel Corporation
• Original Assignee: Gert F. Pedersen, Jan-Erik Mueller, Mauro Pelosi, Mikael Bergholz Knudsen, Peter Bundgaard
• Inventors: Knudsen, Mikael Bergholz, Bundgaard, Peter, Mueller, Jan-Erik, Pedersen, Gert F., Pelosi, Mauro
• Granted Patent: US 8,928,536 B2
• Time in Patent Office: Days
• US Class Current: 343/745
• 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 method comprising:

determining an impedance of an antenna;

determining an impedance of an amplifier and an impedance of at least one filter; and

matching the impedance of the antenna with the impedance of the amplifier and matching the impedance of the antenna with the impedance of the at least one filter.

2. The method of claim 1, wherein the impedance of the antenna is based on a frequency of signals.

3. The method of claim 1, wherein the impedance of the antenna is based on interaction between a user of a wireless communication device and the antenna, the wireless communication device including the antenna.

6. The method of claim 1, wherein the tuning circuit is to match impedances of the antenna with impedances of a plurality of filters across a plurality of frequency ranges.

7. The method of claim 1, further comprising matching an impedance of another antenna with an impedance of another amplifier and matching the impedance of the another antenna with an impedance of at least one another filter.

8. 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.

4. The method of claim 10 further comprising:

determining an impedance of another antenna;

determining an impedance of another amplifier; and

matching the impedance of the another antenna to the impedance of the another amplifier.

5. The method of claim 4, wherein a pass band of signals that are transmitted from the another antenna does not overlap with a pass band of signals that are received via the antenna.

9. The device of claim 8, 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

10. The device of claim 8, wherein the receiving amplifier and the transmitting amplifier are included in the transceiver.

11. The device of claim 8, wherein the receiving amplifier is included in the receiving branch and the transmitting amplifier is included in the transmitting branch.

12. The device of claim 8, wherein the receiving antenna, the transmitting antenna, or a combination thereof, are a planar inverted F antenna (PIFA).

13. The device of claim 8, wherein the transmitting antenna, the receiving antenna, or a combination thereof, have a building height less than or equal to 1 millimeter.

14. The device of claim 8, 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.

15. The device of claim 8, 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.

16. The device of claim 8, wherein the receiving antenna includes one or more tuning elements to match an impedance of the narrowband antenna with the impedance of the receiving amplifier.

17. The device of claim 8, 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.

18. The device of claim 8, wherein the transmitting tuning circuit matches impedances of the transmitting antenna with impedances of a plurality of filters across a plurality of frequency ranges.

19. The device of claim 8, wherein the receiving tuning circuit matches impedances of the receiving antenna with impedances of a plurality of filters across a plurality of frequency ranges.