Method and system for a wireless integrated test and measurement device
View Patent ↗Aspects of a method and system for a wireless integrated power test and measurement are provided. In this regard, concurrently with receiving a first signal via a first antenna, a second signal that indicates received signal strength of the first signal may be generated and transmitted via a second antenna. The second signal may be utilized to determine performance of the first antenna. A frequency of the generated second signal may be controlled so as to mitigate interference between the transmitted second signal and the received first signal. The first signal may be formatted in accordance with one or more first wireless standards and the second signal may be formatted in accordance with one or more second wireless standards. The received signal strength of the first signal may be determined via an analog-to-digital converter and the second signal may be updated at the sample rate of the analog-to-digital converter.
1. A method for signal measurement, the method comprising:
in a wireless communication device:
receiving a first signal via a first antenna at said wireless communication device during a test duration, the first signal being modulated according to a first communication protocol;
during the test duration when the first antenna is under test, measuring a received signal strength of the received first signal at said wireless communication device;
in response to the measured received signal strength, generating a characterization signal;
concurrently with receiving said first signal via said first antenna during said test duration, modulating a second signal with the characterization signal so that the second signal indicates said measured received signal strength of said first signal, including
determining a frequency of the received first signal, and
selecting a frequency of said generated second signal so as to mitigate interference with said received first signal such that there is minimal or acceptable interference of the generated second signal from the received first signal, and
modulating the generated second signal according to a second communication protocol, the second communication protocol being selected to be different from the first communication protocol; and
concurrently with receiving said first signal via said first antenna during said test duration, transmitting said generated second signal via a second antenna during the test duration.
2. The method according to claim 1 , wherein transmitting said generated second signal comprises:
transmitting the generated second signal in real time such that, as the first signal is received at an input, the second antenna concurrently transmits the second signal.
3. The method according to claim 1 , wherein said first signal is formatted in accordance with one or more first wireless standards and said second signal is formatted in accordance with a second wireless standard, the second wireless standard chosen to mitigate interference between the second signal and the first signal.
4. The method according to claim 3 , wherein generating a second signal that indicates said measured received signal strength of said first signal comprises generating one or more Bluetooth packets that convey the measured received signal strength of the first signal.
5. The method according to claim 1 , comprising:
determining said received signal strength of said first signal via an analog-to-digital converter which samples the first signal;
generating the characterization signal using a single sample of the first signal by the analog-to-digital converter; and
updating said second signal at the sample rate of said analog-to-digital converter.
6. The method according to claim 5 , comprising configuring one or more of the analog-to-digital converter, a matching network, and a power amplifier based on characteristics of said first signal.
7. The method according to claim 5 , comprising:
processing the single sample of the first signal to determine an instantaneous power of the first signal; and
producing the characterization signal with a value indicative of the instantaneous power of said first signal.
8. The method according to claim 5 , comprising:
in the analog-to-digital converter, sampling the first signal so that each characterization signal corresponds to a plurality of samples of the first signal;
processing the plurality of samples of the first signal to determine a time-averaged power of the first signal and to produce the characterization signal with a value indicative of the time-averaged power of said first signal.
9. The method according to claim 5 , further comprising:
initially, selecting a range or a resolution of the analog-to-digital converter; and
subsequently, using the generated characterization signal to update the range or the resolution of the analog-to digital converter.
10. The method according to claim 9 , wherein the range or resolution of the analog-to-digital converter is selected using characteristics of the first antenna.
11. A wireless communication device comprising:
a first antenna configured to receive a first signal during a test duration, the first signal being modulated according to a first communication protocol;
a received signal strength indicator configured to measure a received signal strength of the received first signal at said wireless communication device during the test duration when the first antenna is under test;
a baseband processor responsive to the measured received signal strength to generate a characterization signal;
circuitry configured to modulate a second signal with the characterization signal concurrently with receiving said first signal via said first antenna during said test duration so that the second signal indicates said measured received signal strength of said first signal, including
by the baseband processor, determining a frequency of the received first signal, and
by the baseband processor, selecting a frequency of said generated second signal so as to mitigate interference with said received first signal such that there is minimal or acceptable interference of the generated second signal from the received first signal, and
by a modulator, modulating the generated second signal according to a second communication protocol, the second communication protocol being selected to be different from the first communication protocol; and
concurrently with receiving said first signal via said first antenna during said test duration, transmitting by the wireless communication device said generated second signal via a second antenna during the test duration.
12. The wireless communication device according to claim 11 , wherein the wireless communication device is further configured for transmitting the generated second signal in real time such that, as the first signal is received at an input, the second antenna concurrently transmits the second signal.
13. The wireless communication device according to claim 11 , wherein said first signal is formatted in accordance with one or more first wireless standards and said second signal is formatted in accordance with a second wireless standard, the second wireless standard chosen to mitigate interference between the second signal and the first signal.
14. The wireless communication device according to claim 13 , further comprising a transmitter configured to generate one or more Bluetooth packets that convey the measured received signal strength of the first signal.
15. The wireless communication device according to claim 11 , comprising:
the received signal strength indicator is configured to determine said received signal strength of said first signal via an analog-to-digital converter which samples the first signal;
the baseband processor is configured to generate the characterization signal using a single sample of the first signal by the analog-to-digital converter; and
the circuitry is configured to update said second signal at the sample rate of said analog-to-digital converter.
16. The wireless communication device according to claim 15 , further comprising a processor operative to configure one or more of the analog-to-digital converter, a matching network, and a power amplifier based on characteristics of said first signal.
17. The wireless communication device according to claim 15 , comprising:
circuitry configured to process the single sample of the first signal to determine an instantaneous power of the first signal; and
wherein the baseband processor is configured to produce the characterization signal with a value indicative of the instantaneous power of said first signal.
18. The wireless communication device according to claim 15 , wherein the analog-to-digital converter is configured to sample the first signal so that each characterization signal corresponds to a plurality of samples of the first signal; and further comprising:
circuitry configured to process the plurality of samples of the first signal to determine a time-averaged power of the first signal, the baseband processor operative to produce the characterization signal with a value indicative of the time-averaged power of said first signal.
19. The wireless communication device according to claim 15 , further comprising:
a processor configured for initially selecting a range or a resolution of the analog-to-digital converter; and subsequently, using the generated characterization signal to update the range or the resolution of the analog-to digital converter.
20. The wireless communication device according to claim 19 , wherein the processor is configured to select the range or resolution of the analog-to-digital converter using characteristics of the first antenna.