Method, system, and apparatus for resonator circuits and modulating resonators

Patent metadata

Field	Value
Publication number	US-9660611-B2
Application number	US-201514720613-A
Country	US
Kind code	B2
Filing date	May 22, 2015
Priority date	Dec 10, 2010
Publication date	May 23, 2017
Grant date	May 23, 2017

Abstract

Embodiments of resonator circuits and modulating resonators and are described generally herein. One or more acoustic wave resonators may be coupled in series or parallel to generate tunable filters. One or more acoustic wave resonances may be modulated by one or more capacitors or tunable capacitors. One or more acoustic wave modules may also be switchable in a filter. Other embodiments may be described and claimed.

First claim

What is claimed is:

1. An electrical signal processing system, including:
an acoustic wave resonator (AWR);
an inversion module coupled to an electrical signal processing system output to provide an inversion functionality, and
a first capacitor module coupled to the AWR, the AWR having a resonant frequency and an anti-resonant frequency, the AWR configured to transduce an electrical signal, and the combination of the AWR and the first capacitor module configured to modify the transduction of the electrical signal.

2. The electrical signal processing system of claim 1 , the first capacitor module coupled in parallel to the AWR.

3. The electrical signal processing system of claim 2 , the combination of the AWR and the first capacitor module modifying the AWR anti-resonant frequency.

4. The electrical signal processing system of claim 1 , the first capacitor module coupled serially to the AWR.

5. The electrical signal processing system of claim 4 , the combination of the AWR and the first capacitor module modifying the AWR resonant frequency.

6. The electrical signal processing system of claim 1 , wherein the first capacitor module is variable having a plurality of selectable capacitances.

7. The electrical signal processing system of claim 6 , the first capacitor module variably modifying one of the resonant frequency and the anti-resonant frequency.

8. The electrical signal processing system of claim 6 , the first capacitor module coupled in parallel to the AWR.

9. The electrical signal processing system of claim 8 the combination of the AWR and the first capacitor module variably modifying the AWR anti-resonant frequency.

10. The electrical signal processing system of claim 1 , the first capacitor module coupled in parallel to the AWR and further comprising a second capacitor module coupled serially to the AWR.

11. The electrical signal processing system of claim 10 , the combination of the AWR, the first capacitor module, and the second capacitor module modifying the AWR resonant frequency and AWR anti-resonant frequency.

12. The electrical signal processing system of claim 11 , wherein the first capacitor module is variable having a plurality of selectable capacitances.

13. The electrical signal processing system of claim 12 , the first capacitor module variably modifying the AWR anti-resonant frequency.

14. The electrical signal processing system of claim 13 , wherein the second capacitor module is variable having a plurality of selectable capacitances.

15. The electrical signal processing system of claim 14 , the first capacitor module and the second capacitor module variably modifying the AWR anti-resonant frequency and resonant frequency.

16. The electrical signal processing system of claim 1 , wherein the first capacitor module includes at least two selectable capacitors.

17. The electrical signal processing system of claim 1 , wherein the inversion module is a K-filter.

18. The electrical signal processing system of claim 1 , wherein the inversion module is a capacitor.

19. The electrical signal processing system of claim 1 , wherein the inversion module comprises two capacitors in series with a third capacitor coupled in between the two capacitors.

20. An electrical signal processing system, including:
a first acoustic module resonator (FAWR);
a first capacitor module coupled in parallel to the FAWR;
a second acoustic wave resonator (SAWR), the SAWR coupled to the FAWR and to ground; and
an inversion module coupled to an electrical signal processing system output to provide an inversion functionality,
wherein an electrical signal is configured to be processed by the combination of the FAWR, the SAWR, the first capacitor module and the inversion module.

21. The electrical signal processing system of claim 20 , the FAWR filtering the electrical signal and the SAWR filtering the electrical signal.

22. The electrical signal processing system of claim 21 , the FAWR filter having a resonant frequency (RFA1) and an anti-resonant frequency (AFA1) and the SAWR filter having resonant frequency (RFA2) and an anti-resonant frequency (AFA2).

23. The electrical signal processing system of claim 18 , the first capacitor module modifying the anti-resonant frequency AFA1.

24. The electrical signal processing system of claim 20 , the RFA1 creating an effective passband and the AFA1 creating an effective stopband.

25. The electrical signal processing system of claim 24 , the AFA2 creating an effective passband and the RFA2 creating an effective stopband.

26. The electrical signal processing system of claim 25 , the combination of the FAWR and the SAWR forming a bandpass filter.

27. The electrical signal processing system of claim 25 , the combination of the FAWR and the SAWR forming a band reject filter.

28. The electrical signal processing system of claim 25 , wherein the first capacitor module is variable having a plurality of selectable capacitances.

29. The electrical signal processing system of claim 28 , wherein the combination of the FAWR, the variable first capacitor module and the SAWR form a tunable bandpass filter.

30. The electrical signal processing system of claim 28 , wherein the combination of the FAWR, the variable first capacitor module and the SAWR form a tunable band reject filter.

31. The electrical signal processing system of claim 22 , further comprising a second capacitor module one of parallel coupled and serially coupled to the SAWR.

32. The electrical signal processing system of claim 31 , the second capacitor module modifying one of the RFA2 and the AFA2.

33. The electrical signal processing system of claim 22 , further comprising a second capacitor module parallel coupled to the SAWR and the second capacitor module modifying the AFA2.

34. The electrical signal processing system of claim 22 , wherein the first capacitor module is variable having a plurality of selectable capacitances and variably modifies the AFA1.

35. The electrical signal processing system of claim 31 , wherein the second capacitor module is variable having a plurality of selectable capacitances and variably modifies the AFA2.

36. The electrical signal processing system of claim 31 , wherein the second capacitor module is variable having a plurality of selectable capacitances.

37. The electrical signal processing system of claim 22 , further comprising a second capacitor module serially coupled to the SAWR and the second capacitor module modifying the RFA2.

38. The electrical signal processing system of claim 37 , wherein the second capacitor module is variable having a plurality of selectable capacitances and variably modifies the RFA2.

39. The electrical signal processing system of claim 20 , wherein the inversion module is a K-filter.

40. The electrical signal processing system of claim 20 , wherein the inversion module is a capacitor.

41. The electrical signal processing system of claim 20 , wherein the inversion module comprises two capacitors in series with a third capacitor coupled in between the two capacitors.

42. An electrical signal processing system, including:
a first acou

Assignees

• Peregrine Semiconductor Corp

Inventors

• Burgener Mark L
• Cable James S

Classifications

• H03H9/54 Primary

  comprising resonators of piezoelectric or electrostrictive material (comprising resonators using surface acoustic waves H03H9/64) · CPC title

• H03H9/547 Primary

  Notch filters, e.g. notch BAW or thin film resonator filters · CPC title

• H03H2210/025

  Capacitor · CPC title

• H03J2200/10

  Tuning of a resonator by means of digitally controlled capacitor bank · CPC title

• H03H7/48

  Networks for connecting several sources or loads, working on the same frequency or frequency band, to a common load or source (phase shifters providing two or more output signals H03H7/21) · CPC title