Multi-band signal detection

• US 8,588,351 B2
• Filed: 08/22/2007
• Issued: 11/19/2013
• Est. Priority Date: 08/22/2007
• Status: Active Grant

• Current Assignee: Google Technology Holdings LLC (Alphabet Inc.)
• Original Assignee: Motorola Mobility LLC (Lenovo Group Ltd.)
• Inventors: Bush, Kevin J., Barr, John R., Binzel, Charles P., Buskey, Ronald F., Storm, Brian D.
• Primary Examiner(s): Ahn, Sam K
• Assistant Examiner(s): Perez, James M
• Application Number:
  US11/843,334
• Publication Number:
  US 20090052500A1
• Time in Patent Office: 2,281 Days
• Field of Search: 342 52- 58, 342/60, 375219-221, 375259-260, 375/130, 375/140, 375146-148, 375/267, 375271-285, 375295-299, 375302-307, 375/316, 375322-351, 370/310, 370/328, 370338-339
• US Class Current: 375/347
• 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 1/0092 using a wideband front end

Abstract

Apparatus may be provided including a spectrum analyzer and decision circuitry. The spectrum analyzer may be configured to ascertain wireless signal signature data from a wide range of frequency bands. The decision circuitry may be configured to modify operation of one or both of a receiver and a transmitter based on the signal signature data.

Claims

1. Apparatus comprising:

a spectrum analyzer including a sweep along a frequency spectrum ranging from about 800 MHz to about 5.0 GHz, the spectrum analyzer being configured to ascertain wireless signal signature data, the wireless signal signature data being for respective different active carrier frequencies, the different active carrier frequencies including at least four carrier frequencies in the 800 MHz to 2200 MHz range and at least two carrier frequencies in the 2.4 GHz to 5.0 GHz range, and the wireless signal signature data includes distinguishing communication protocols of the active carrier frequencies; and

decision circuitry configured to modify operation of one of a receiver and a transmitter based on the wireless signal signature data,

wherein the spectrum analyzer includes a broad frequency Kalman scanner multi-mode resonator.

2. The apparatus according to claim 1, further comprising a wireless interface including front end circuitry and at least one antenna.

3. The apparatus according to claim 1, wherein the signal signature data includes wireless frequency band identifying information.

4. The apparatus according to claim 1, wherein the signal signature data includes signal metrics.

5. The apparatus according to claim 1, wherein the signal signature data includes signal amplitudes within respective plural different frequency bands and includes band information.

6. The apparatus according to claim 5, wherein the band information includes frequency location information.

7. The apparatus according to claim 6, wherein the band information further includes a spectral breadth of each of the plural different frequency bands for which the signal amplitudes are included.

8. The apparatus according to claim 1, wherein the spectrum analyzer includes a dynamically tuned resonator.

9. The apparatus according to claim 1, wherein the spectrum analyzer includes a dedicated receive chain including parallel bandpass filters.

10. The apparatus according to claim 1, wherein the decision circuitry is configured to modify the operation of one of a receiver and a transmitter by choosing a carrier frequency to receive data via a receiver at the apparatus.

11. The apparatus according to claim 1, wherein the decision circuitry is configured to, at certain times, modify the operation of one of a receiver and a transmitter by choosing a carrier frequency, and the decision circuitry is configured to, at other times, modify the operation of both a receiver and a transmitter by choosing a set of carrier frequencies for duplex communication.

12. The apparatus according to claim 1, wherein the decision circuitry is configured to modify the operation of one of a receiver and a transmitter by choosing a carrier frequency for transmission of data via the transmitter to another device separate from the apparatus.

13. A method comprising:

employing a spectrum analyzer including a sweep along a frequency spectrum ranging from about 800 MHz to about 5.0 GHz, the spectrum analyzer being configured for ascertaining wireless signal signature data, the wireless signal signature data being for respective different active carrier frequencies, the different active carrier frequencies including at least four carrier frequencies in the 800 MHz to 2200 MHz range and at least two carrier frequencies in the 2.4 GHz to 5.0 GHz range, and the wireless signal signature data includes distinguishing communication protocols of the active carrier frequencies; and

modifying operation of one of a receiver and a transmitter based on the wireless signal signature data,

wherein the spectrum analyzer includes a broad frequency Kalman scanner multi-mode resonator.

14. The method according to claim 13, wherein the signal signature data includes wireless frequency band identifying information.

15. The method according to claim 13, wherein the signal signature data includes signal metrics.

16. The method according to claim 13, wherein the signal signature data includes signal amplitudes within respective plural different frequency bands and includes band information.

17. The apparatus according to claim 16, wherein the band information includes frequency location information.

18. The apparatus according to claim 17, wherein the band information further includes a spectral breadth of each of the plural different frequency bands for which the signal amplitudes are included.

19. An electronic device comprising:

a spectrum analyzer including a sweep along a frequency spectrum ranging from about 800 MHz to about 5.0 GHz, the spectrum analyzer being configured to ascertain wireless signal signature data, the wireless signal signature data being for respective different active carrier frequencies, the different active carrier frequencies including at least four carrier frequencies in the 800 MHz to 2200 MHz range and at least two carrier frequencies in the 2.4 GHz to 5.0 GHz range, and the wireless signal signature data includes distinguishing communication protocols of the active carrier frequencies; and

decision circuitry configured to modify operation of one of a receiver and a transmitter based on the wireless signal signature data,

wherein the spectrum analyzer includes a broad frequency Kalman scanner multi-mode resonator.