Hybrid Wi-Fi and power router transmitter

• US 10,128,695 B2
• Filed: 06/25/2013
• Issued: 11/13/2018
• Est. Priority Date: 05/10/2013
• Status: Active Grant

• Current Assignee: Energous Corporation
• Original Assignee: Energous Corporation
• Inventors: Leabman, Michael A., Brewer, Gregory Scott
• Primary Examiner(s): Tran, Thienvu
• Assistant Examiner(s): Baxter, Brian K
• Application Number:
  US13/926,055
• Publication Number:
  US 20140376646A1
• Time in Patent Office: 1,967 Days
• Field of Search: 307104
• CPC Class Codes: H02J 50/23 characterised by the type of transmitting antennas, e.g. directional array antennas or Yagi antennas
• CPC Class Codes: H02J 50/27 characterised by the type of receiving antennas, e.g. rectennas
• CPC Class Codes: H02J 50/402 the two or more transmitting or the two or more receiving devices being integrated in the same unit, e.g. power mats with several coils or antennas with several sub-antennas
• CPC Class Codes: H02J 50/80 involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
• CPC Class Codes: H02J 50/90 involving detection or optimisation of position, e.g. alignment
• CPC Class Codes: H02J 7/00034 Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge
• CPC Class Codes: H04B 1/04 Circuits
• CPC Class Codes: H04B 3/54 Systems for transmission via power distribution lines

Abstract

The present disclosure provides a method of wireless transmission of power and Wi-Fi signals to electronic devices. The method includes identifying a first receiver that is associated with a first electronic device that requires power and a second receiver that is associated with a second electronic device that requires Wi-Fi signals, generating RF signals at least in part by converting power provided by a power source, where the transmitter includes a first set of antennas for transmitting RF signals and a second set of antennas for transmitting Wi-Fi signals, and transmitting, to the first receiver, the RF signals using at least two antennas of the first set of antennas connected to the transmitter. The method further includes, while transmitting the RF signals using the at least two antennas of the first set of antennas, simultaneously transmitting, to the second receiver, Wi-Fi signals using the second set of antennas.

Claims

1. A method for wireless transmission of power and wireless communication signals to portable electronic devices, comprising:

identifying a first receiver that is associated with a first electronic device that requires power and a second receiver that is associated with a second electronic device that requires wireless communication signals;

generating, using a radio frequency (RF) circuit connected to a transmitter, RF signals at least in part by converting power provided by a power source, wherein the transmitter (i) is connected to the power source and (ii) includes a first set of antennas for transmitting RF signals and a second set of antennas for transmitting wireless communication signals;

transmitting, to the first receiver, the RF signals using at least two antennas of the first set of antennas connected to the transmitter, wherein the RF signals are transmitted so that they constructively interfere proximate to the first electronic device; and

while transmitting the RF signals using the at least two antennas of the first set of antennas, simultaneously transmitting, to the second receiver, wireless communication signals using the second set of antennas.

2. The method of claim 1, wherein:

generating the RF signals includes using a controller in conjunction with the RF circuit, and the controller is a digital signal processor, a micro-controller, a microprocessor, an application specific integrated circuit or other suitable processor for controlling the RF signals and the wireless communication signals.

3. The method claim 1, wherein the transmitter further includes a switch to change transmitter operation between a power mode in which only RF signals are transmitted or a communication mode in which only wireless communication signals are transmitted.

4. The method of claim 1, further comprising:

establishing channels or paths between the transmitter and the first receiver for transmitting the RF signals.

5. The method of claim 4, wherein:

the first set of antennas includes onmi-directional antennas, and

establishing the channel or path includes allowing the RF signals to bounce over the walls or ceiling inside a room until the path or channel is established between the transmitter and first receiver.

6. The method of claim 1, wherein the first receiver is configured to rectify the RF signals and convert the rectified RF signals into a constant DC voltage for charging or powering the first electronic device.

7. The method of claim 1, wherein the transmitter is configured in a generally flat plane along with the first and second sets of antennas.

8. The method of claim 1, wherein generating the RF signals includes using a digital signal processor (DSP) in conjunction with the RF circuit within the transmitter to control phases and amplitudes of the RF signals to generate pockets of energy and null spaces at desired locations.

9. The method of claim 4, wherein establishing the channel or path between the transmitter and the first receiver includes receiving gain and phase information from the first receiver through wireless communication signals and using the received gain and phase information to establish the channel or path.

10. The method of claim 9, wherein identifying the first receiver and the second receiver includes receiving respective unique identifiers from the first and second electronic device.

11. The method of claim 1, wherein transmitting the RF signals includes focusing and avoiding obstacles interfering with the RF signals between the first receiver and the transmitter.

12. The method of claim 1, wherein the first and second receivers correspond to a same receiver, and the first and second electronic devices correspond to a same electronic device.

13. The method of claim 1, wherein the first and second receivers correspond to distinct receivers, and the first and second electronic devices correspond to distinct electronic devices.

14. The method of claim 1, wherein:

the RF signals are RF power transmission signals.

15. The method of claim 1, wherein the first set of antennas is distinct from the second set of antennas.

16. A hybrid transmitter for wireless transmission of power and wireless communication signals to portable electronic devices, the hybrid transmitter comprising:

a controller configured to identify a first receiver that is associated with a first electronic device that requires power and a second receiver that is associated with a second electronic device that requires wireless communication signals;

a radio frequency (RF) circuit configured to generate RF signals at least in part by converting power provided by a power source connected to the hybrid transmitter;

a first set of antennas configured to transmit RF signals to the first receiver using at least two antennas of the first set of antennas, wherein the RF signals are transmitted so that they constructively interfere proximate to the first electronic device; and

a second set of antennas configured to, while transmitting the RF signals using the at least two antennas of the first set of antennas, simultaneously transmit, to the second receiver, wireless communication signals.

17. The hybrid transmitter of claim 16, wherein:

the controller is further configured to generate the RF signals in conjunction with the RF circuit, and

the controller is a digital signal processor, a micro-controller, a microprocessor, an application specific integrated circuit or other suitable processor for controlling the RF signals and the wireless communication signals.

18. The hybrid transmitter of claim 16, wherein the first receiver is configured to rectify the RF signals and convert the rectified RF signals into a DC voltage for charging and/or powering the first electronic device.

19. The hybrid transmitter of claim 16, wherein the first and second receivers correspond to a same receiver, and the first and second electronic devices correspond to a same electronic device.

20. The hybrid transmitter of claim 16, wherein the first and second receivers correspond to distinct receivers, and the first and second electronic devices correspond to distinct electronic devices.

21. The hybrid transmitter of claim 16, wherein:

the RF signals are RF power transmission signals.

22. The hybrid transmitter of claim 16, wherein the first set of antennas is distinct from the second set of antennas.