Computing device with configurable antenna

• US 9,461,673 B2
• Filed: 10/13/2015
• Issued: 10/04/2016
• Est. Priority Date: 12/14/2007
• Status: Active Grant

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Inventors: Hassan, Amer A., Huitema, Christian
• Primary Examiner(s): Tran, Tuan A
• Application Number:
  US14/881,446
• Publication Number:
  US 20160065246A1
• Time in Patent Office: 357 Days
• Field of Search: 455 78- 83, 455/552.1, 455/553.1, 455/561, 455/562.1, 455/101, 455/121, 455123-125, 4551931-1933, 455280-282, 455/334, 343820-823, 343850-853, 343860-861, 343/724, 343/725, 343/729, 375/219
• US Class Current: 1/1
• CPC Class Codes: H01Q 1/2291 used in bluetooth or WI-FI devices of Wireless Local Area Networks [WLAN] H01Q1/241 takes precedence; WLAN in general H04W
• CPC Class Codes: H01Q 21/30 Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
• CPC Class Codes: H01Q 3/24 varying the orientation by switching energy from one active radiating element to another, e.g. for beam switching
• CPC Class Codes: H01Q 5/321 within a radiating element or between connected radiating elements
• CPC Class Codes: H01Q 5/328 between a radiating element and ground
• CPC Class Codes: H01Q 9/27 Spiral antennas
• CPC Class Codes: H01Q 9/30 with feed to end of elongated active element, e.g. unipole H01Q9/44 takes precedence
• CPC Class Codes: H04B 1/0003 Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain digital baseband systems H04L25/00; digital modulation/demodulation H04L27/00; CDMA H04B1/707; TDMA H04B7/2643; image transmission H04N5/00
• CPC Class Codes: H04B 1/0035 Channel filtering, i.e. selecting a frequency channel within a software radio system multiplexing of multicarrier modulation signals being represented by different frequencies H04L5/06; multiplexing of multicarrier modulation signals H04L5/023
• CPC Class Codes: H04B 1/005 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
• CPC Class Codes: H04B 1/0064 with separate antennas for the more than one band H04B1/0053 takes precedence
• CPC Class Codes: H04B 1/401 for selecting or indicating operating mode
• CPC Class Codes: H04B 1/48 in circuits for connecting transmitter and receiver to a common transmission path, e.g. by energy of transmitter H04B1/46 takes precedence
• CPC Class Codes: H04B 1/54 using the same frequency for two directions of communication H04B1/44 takes precedence

Abstract

A computing device with a configurable antenna. The antenna is configured through a switching circuit operating under software control. Operating characteristics of the antenna are configured based on connections between conducting segments established by the switching circuit, allowing the nominal frequency, bandwidth or other characteristics of the antenna to be configured. Because the switching is software controlled, the configurable antenna may be integrated with a software defined radio. The radio and antenna can be reconfigured to support communication according to different wireless technologies at different times or to interleave packets according to different wireless technologies to support concurrent sessions using different wireless technologies.

Claims

1. A computing device, comprising:

a radio configured to receive a communications signal; and

a memory and a processor that are respectively configured to store and execute instructions, including for instructions causing the computing device to;

receive information from the radio regarding at least one characteristic of the received communications signal, wherein the at least one characteristic of the received communications signal differs from parameters recorded in an antenna configuration data structure of the computing device;

determine a record from the antenna configuration data structure that best matches the at least one characteristic of the received communications signal; and

reconfigure a configurable antenna according to the obtained record.

2. The computing device of claim 1, wherein the information from the radio identifies a wireless technology according to which the received communications signal was generated.

3. The computing device of claim 1, wherein the instructions also cause the computing device to:

derive control signals for the configurable antenna.

4. The computing device of claim 1, wherein the information from the radio is based on frequency parameters of the received communications signal.

5. The computing device of claim 4, wherein the frequency parameters comprise a nominal frequency of the received communications signal and a bandwidth of the received communications signal.

6. The computing device of claim 1, wherein:

the information from the radio comprises a first specification and a second specification; and

the record from the antenna configuration data structure comprises a first record and a second record.

7. The computing device of claim 6, wherein the instructions also cause the computing device to:

derive control signals for the configurable antenna by combining data from the first record and the second record.

8. A wireless communications system, comprising:

a memory and a processor that are respectively configured to store and execute instructions, wherein the instructions cause the wireless communications system to perform operations in response to execution by the processor, wherein the operations include;

determining at least one characteristic associated with a received wireless signal, wherein the at least one determined characteristic is different than characteristics for predefined antenna configurations of a plurality of predefined antenna configurations;

selecting a closest available antenna configuration for the at least one determined characteristic from the plurality of predefined antenna configurations; and

configuring a configurable antenna in accordance with the selected antenna configuration.

9. The wireless communications system of claim 8, further comprising:

the configurable antenna, wherein the configurable antenna includes;

an antenna element configured to transmit wireless signals, receive wireless signals, or transmit and receive wireless signals; and

at least one additional element that is selectively connectable to the antenna element.

10. The wireless communications system of claim 8, further comprising:

the configurable antenna, wherein the configurable antenna includes;

a signal connection;

multiple antenna elements configured to transmit wireless signals, receive wireless signals, or transmit and receive wireless signals; and

at least one switching element configured to selectively couple particular antenna elements of the multiple antenna elements to the signal connection.

11. The wireless communications system of claim 8, further comprising:

at least one data plane component configured to at least one of generate data for transmission via the configurable antenna or receive data via the configurable antenna.

12. The wireless communications system of claim 8, wherein the at least one determined characteristic comprises a bandwidth associated with the signal, wherein each of the plurality of antenna configurations is associated with a corresponding antenna bandwidth, and wherein the operations also include:

selecting the antenna configuration having the smallest corresponding antenna bandwidth that subsumes the bandwidth associated with the signal.

13. The wireless communications system of claim 8, wherein the operations further comprise:

deriving control signals for the configurable antenna by combining data from the multiple records of the plurality of predefined antenna configurations.

14. A wireless communications system, comprising:

a memory and a processor that are respectively configured to store and execute instructions, wherein the instructions cause the wireless communications system to perform operations in response to execution by the processor, wherein the operations include;

iteratively, on a packet-by-packet basis;

selecting a closest matching antenna configuration profile from a collection of antenna configuration profiles, wherein at least one characteristic for the selected closest matching antenna configuration profile differs from at least one characteristic of a signal received or transmitted via the antenna; and

configuring an antenna according to the selected particular antenna configuration.

15. The wireless communications system of claim 14, wherein the at least one characteristic comprises a bandwidth associated with the signal, wherein the antenna configuration profiles of the collection of antenna configuration profiles are associated with respective antenna bandwidths, and wherein selecting the closest matching antenna configuration profile includes:

identifying the antenna configuration profile having the smallest corresponding antenna bandwidth that subsumes the bandwidth associated with the signal; and

selecting the identified antenna configuration profile.

16. The wireless communications system of claim 14, wherein the at least one characteristic comprises a nominal frequency associated with the signal, wherein the antenna configuration profiles of the collection of antenna configuration profiles are associated with respective nominal frequencies, and wherein selecting the closest matching antenna configuration profile includes:

identifying a nominal frequency associated with another signal;

selecting another antenna configuration profile from the collection of antenna configurations profiles based on the nominal frequency associated with the signal and the nominal frequency associated with the other signal; and

configuring the antenna in accordance with the other antenna configuration profile.

17. The wireless communications system of claim 14, wherein the at least one characteristic comprises a nominal frequency associated with the signal, wherein the antenna configuration profiles of the collection of antenna configuration profiles are associated with respective antenna nominal frequencies, and wherein selecting the closest matching antenna configuration profile includes:

identifying the antenna configuration profile having the corresponding antenna nominal frequency that best matches the nominal frequency associated with the signal.

18. The wireless communications system of claim 14, wherein the at least one characteristic comprises a type of wireless standard associated with the signal.

19. The wireless communications system of claim 14, wherein the operations further comprise:

maintaining connection information, corresponding to a network connection communicated over the antenna, during a reconfiguration of the antenna in accordance with another antenna configuration profile.

20. The wireless communications system of claim 14, wherein the operations further comprise:

controlling a software defined radio coupled to the configurable antenna to send and/or receive data via the configurable antenna.