Techniques for filtering multi-component signals
Techniques are described herein for filtering and/or otherwise isolating or extracting components of multi-component signals. More specifically, embodiments of the present disclosure describe techniques for filtering and/or otherwise extracting a continuous wave component (or wireless power component) and a modulated data component from a multi-component signal. In some embodiments, the techniques describe systems, apparatuses and methods for filtering and/or otherwise isolating or extracting a frequency (e.g., modulated data component) from a continuous wave (e.g., wireless power component) without affecting the levels of other frequencies. The individual components or signals can be transmitted by one or more sources and received at one or more existing antennas of an electronic device simultaneously.
1. An apparatus comprising:
means for receiving a multi-component wireless signal having: a modulated data component, and a power component;
means for splitting the multi-component wireless signal into input signals on: a first path, and a second path;
means for removing the modulated data component from the multi-component wireless signal on the second path;
means for coupling in-phase signals of the multi-component wireless signal on the first and second paths; and
means for extracting electric power from the in-phase signals.
2. The apparatus of claim 1 , wherein the means for extracting electric power from the in-phase signals is configured to extract alternating current (AC) power from the in-phase signals.
3. The apparatus of claim 2 further comprising means for converting the AC power to direct current (DC) power.
4. The apparatus of claim 1 further comprising means for transmitting the extracted electric power to at least one of: an electric energy storage device, and a circuit.
5. The apparatus of claim 1 , wherein the means for receiving the multi-component wireless signal includes an antenna configured to simultaneously receive the power and modulated data components of the multi-component wireless signal.
6. The apparatus of claim 5 , wherein the antenna includes an antenna array.
7. The apparatus of claim 6 further comprising means for combining a plurality of received multi-component wireless signals received from a plurality of antennas of the antenna array.
8. The apparatus of claim 1 further comprising means for delaying the input signals on at least one of the first, and second, paths to facilitate receipt of the in-phase signals by the means for extracting electric power.
9. The apparatus of claim 1 , wherein the means for extracting electric power comprises a rat-race coupler.
10. The apparatus of claim 1 further comprising means for compensating an amplitude of the input signals on at least one of the first, and second, paths to facilitate receipt of amplitude compensated signals by the means for extracting electric power.
11. An apparatus comprising:
means for receiving a multi-component wireless signal having: a power component, and a modulated data component;
means for splitting the multi-component wireless signal into input signals on: a first path, and a second path;
means for removing the modulated data component from the multi-component wireless signal on the second path;
means for coupling in-phase signals of the multi-component wireless signal on the first and second paths; and
means for extracting the modulated data component from the in-phase signals.
12. The apparatus of claim 11 further comprising means for transmitting the extracted modulated data component to modulated data processing circuitry.
13. The apparatus of claim 11 , wherein the means for receiving the multi-component wireless signal includes an antenna configured to simultaneously receive the modulated data, and the power, components of the multi-component wireless signal.
14. The apparatus of claim 13 , wherein the antenna includes an antenna array.
15. The apparatus of claim 14 further comprising means for combining a plurality of received multi-component wireless signals received from a plurality of antennas of the antenna array.
16. The apparatus of claim 15 , wherein the means for combining comprises a Wilkinson power divider circuit.
17. The apparatus of claim 11 further comprising means for delaying input signals on at least one of the first, and second, paths to facilitate receipt of the in-phase signals by the means for extracting the modulated data component.
18. The apparatus of claim 11 further comprising means for compensating an amplitude of the input signals on at least one of the first, and second, paths to facilitate receipt of amplitude compensated signals by the means for extracting the modulated data.
19. A method comprising:
receiving a multi-component wireless signal having: a modulated data component, and a power component;
splitting the multi-component wireless signal into input signals on: a first path, and a second path;
removing the modulated data component from the input signals on the second path;
coupling in-phase signals of the input signals on the first and second paths;
extracting the modulated data component from the in-phase signals; and
extracting electric power from the in-phase signals.
20. The method of claim 19 further comprising at least one of:
delaying the input signals on at least one of the first, and the second, paths; and
compensating an amplitude of the input signals on at least one of the first, and the second, paths,
to facilitate at least one of: extracting the modulated data component, and extracting electric power, from the in-phase signals.