Semiconductor device and fabrication method

• US 9,225,380 B2
• Filed: 11/26/2014
• Issued: 12/29/2015
• Est. Priority Date: 05/29/2009
• Status: Active Grant

• Current Assignee: Intel Corporation
• Original Assignee: Intel Mobile Communications GmbH (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:
  US14/554,318
• Publication Number:
  US 20150079913A1
• Time in Patent Office: 398 Days
• Field of Search: 343/702, 343/850, 343/853, 343/860
• US Class Current: 1/1
• 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. An apparatus comprising:

a transceiver;

a receive antenna;

a transmit antenna;

a receive path coupled between the transceiver and the receive antenna, the receive path comprising a receive amplifier and a first filter;

at least one receive tuning element configured to match an impedance of the receive antenna and an impedance of the receive path;

a transmit path coupled between the transceiver and the transmit antenna, the transmit path comprising a transmit amplifier;

at least one transmit tuning element configured to match an impedance of the transmit antenna and an impedance of the transmit path;

a control circuitry configured to determine the impedance of the receive path and the impedance of the transmit path.

2. The apparatus of claim 1, wherein the impedance of the receive path depends on an impedance of the receive amplifier and an influence by the first filter.

3. The apparatus of claim 1, wherein the impedance of the transmit path depends on an impedance of the transmit amplifier.

4. The apparatus of claim 1, wherein the transmit path further comprises a second filter.

5. The apparatus of claim 4, wherein the impedance of the transmit path depends on an impedance of the transmit amplifier and an influence by the second filter.

6. The apparatus of claim 1, wherein the control circuitry is further configured to provide control signals to the at least one receive tuning element and the at least one transmit tuning element.

7. The apparatus of claim 6, wherein the control circuitry is further configured to control the at least one receive tuning element and the at least one transmit tuning element independently.

8. The apparatus of claim 1, wherein the at least one receive tuning element and/or the at least one transmit tuning element comprises a capacitor and/or a microelectromechanical system (MEMS) capacitor.

9. The apparatus of claim 1, wherein the at least one receive tuning element comprises a tuning circuit of the receive path.

10. The apparatus of claim 1, wherein the at least one transmit tuning element comprises a tuning circuit of the transmit path.

11. The apparatus of claim 1, wherein the receive antenna and the transmit antenna are separate antennas.

12. The apparatus of claim 1, wherein the receive antenna and the transmit antenna comprise a common feed.

13. The apparatus of claim 1, wherein the receive antenna and/or the transmit antenna is a narrowband antenna.

14. A communication device comprising the apparatus of claim 1.

15. A mobile phone comprising the apparatus of claim 1.