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1. WO2020139681 - SYSTEM AND METHOD FOR CONTROLLING A VOLTAGE TUNABLE MULTILAYER CAPACITOR

Note: Text based on automatic Optical Character Recognition processes. Please use the PDF version for legal matters

[ EN ]

WHAT IS CLAIMED IS:

1. A controller for tuning a voltage tunable capacitor, the controller comprising:

at least one analog-to-digital converter configured to receive at least one input signal and convert the at least one input signal into at least one digital signal; a processor configured to process the at least one digital signal using logic to generate an output signal; and

a charge pump configured to boost the output signal to generate a boosted output signal;

wherein the controller is configured to provide the boosted output signal to the voltage tunable capacitor to adjust a bias voltage of the voltage tunable capacitor.

2. The controller of claim 1 , wherein the controller is configured to adjust the bias voltage from about 0 volts to at least about 50 volts.

3. The controller of claim 1 , wherein the boosted output signal adjusts a capacitance of the voltage tunable capacitor.

4. The controller of claim 1 , wherein the at least one input signal is indicative of at least one of a voltage, a current, or a capacitance.

5. The controller of claim 1 , wherein the at least one input signal is indicative of a capacitance associated with the voltage tunable capacitor.

6. The controller of claim 1 , wherein the at least one input signal is indicative of a temperature.

7. The controller of claim 1 , wherein the at least one input signal ranges from about 0 volts to at least about 5 volts.

8. The controller of claim 1 , wherein at least one input signal comprises at least two input signals.

9. The controller of claim 1 , wherein the at least one input signal comprises a manual control signal indicative of at least one of a desired

capacitance or a desired voltage associated with the voltage tunable capacitor.

10. The controller of claim 9, wherein the manual control signal ranges from about 0 volts to at least about 3 volts.

11. A system for tuning a voltage tunable capacitor, comprising:

one or more control devices comprising a charge pump;

a voltage tunable capacitor comprising a plurality of active electrodes, a plurality of bias electrodes, and a plurality of dielectric layers disposed between the pluralities of active electrodes and bias electrodes, and wherein at least some of the dielectric layers contain a tunable dielectric material that exhibits a variable dielectric constant upon the application of an applied voltage;

wherein the one or more control devices are configured to:

receive at least one input signal;

process the at least one input signal to generate an output signal using logic;

boost the output signal using the charge pump; and

provide the boosted output signal to the voltage tunable capacitor to adjust a bias voltage applied across the plurality of bias electrodes.

12. The system of claim 11 , wherein the one or more control devices are configured to provide the output signal so as to adjust the bias voltage from about 0 volts to at least about 50 volts.

13. The system of claim 11 , wherein the boosted output signal adjusts a capacitance of the voltage tunable capacitor.

14. The system of claim 11 , wherein the at least one input signal is indicative of at least one of a voltage, a current, or a capacitance.

15. The system of claim 11 , wherein the at least one input signal is indicative of a capacitance associated with the voltage tunable capacitor.

16. The system of claim 11 , wherein the at least one input signal is indicative of a temperature.

17. The system of claim 11 , wherein the at least one input signal comprises at least two input signals.

18. The system of claim 11 , wherein the at least one input signal comprises a manual control signal indicative of at least one of a desired

capacitance or a desired voltage associated with the voltage tunable capacitor.

19. The system of claim 11 , wherein the manual control signal ranges from about 0 volts to at least about 3 volts.

20. The system of claim 11 , wherein the one or more control devices further comprise an analog-to-digital converter configured to generate a digital

signal from the input signal, and wherein processing the input signal comprises processing the digital signal.

21. The system of claim 11 , wherein the tunable dielectric material has a voltage tunability coefficient of from about 10% to about 90%, wherein the voltage tunability coefficient is determined according to the following general equation:

T = 100 x (eo-en)/eo

wherein,

T is the voltage tunability coefficient;

eo is the static dielectric constant of the material without an applied voltage; and

en is the variable dielectric constant of the material after application of an

applied voltage (DC).

22. The system of claim 11 , wherein a static dielectric constant of the dielectric material ranges from about 100 to about 10,000 as determined in accordance with ASTM D2149-13 at an operating temperature of 25°C and frequency of 1 kHz.

23. The system of claim 11 , wherein the voltage tunable capacitor is capable of being tuned to a capacitance value of about 100 pF or more.

24. The system of claim 11 , wherein the voltage tunable capacitor is capable of being tuned to a capacitance value of less than about 100 pF.

25. The system of claim 11 , wherein the one or more control devices are assembled in a monolithic device.

26. The system of claim 11 , wherein the voltage tunable capacitor further comprises a first active terminal, a second active terminal, a first bias terminal, and a second bias terminal, and wherein:

the plurality of active electrodes comprises a plurality of first active electrodes electrically connected with the first active terminal;

the plurality of active electrodes comprises a plurality of second active electrodes electrically connected with the second active terminal; the plurality of bias electrodes comprises a plurality of first bias electrodes electrically connected with the first bias terminal; and

the plurality of bias electrodes comprises a plurality of second bias electrodes electrically connected with the second bias terminal.

27. The system of claim 11 , wherein thicknesses of the plurality of dielectric layers range from about 0.5 micrometers to about 15 micrometers.

28. The system of claim 11 , wherein thicknesses of the plurality of dielectric layers range from about 15 micrometers to about 150 micrometers.

29. A method for controlling a voltage tunable capacitor, the method comprising:

receiving at least one input signal;

converting the at least one input signal into at least one digital signal; processing the at least one digital signal using logic to generate an output signal;

boosting the output signal using a charge pump to generate a boosted output signal; and

providing the boosted output signal to the voltage tunable capacitor to adjust a bias voltage of the voltage tunable capacitor.