Granted Patent B2

US 7,065,331 · App. 10/381,355 · Granted Jun 20, 2006

Abstract

Claims (27)

1. A resonator system, comprising:

a tunable reference resonator;

parts for tuning the reference resonator to a reference value via a controlled variable for the tunable reference resonator;

a first tunable circuit resonator; and

parts for tuning the first tunable circuit resonator wherein the controlled variable for the tunable reference resonator is used as a measure of the tuning of the first tunable circuit resonator;

wherein at least one of the tunable reference resonator and the first tunable circuit resonator are arranged as at least one of a circuit acoustic wave component, a bulk acoustic wave component, and a diaphragm oscillator.

2. A resonator system as claimed in claim 1 , further comprising:

an oscillator circuit which includes the tunable reference resonator; and

parts for comparing an oscillator circuit frequency with a reference frequency;

wherein the parts for tuning the tunable reference resonator are designed such that, through the tuning of the tunable reference resonator, the oscillator circuit frequency is set to the reference frequency.

3. A resonator system as claimed in claim 2 , further comprising a filter in which the first tunable circuit resonator is arranged.

4. A resonator system as claimed in claim 3 , wherein the oscillator circuit frequency lies outside a useful bandwidth of the filter.

5. A resonator system as claimed in claim 2 , wherein the oscillator circuit can be operated temporally discontinuously.

6. A resonator system as claimed in claim 5 , further comprising a transmitting and/or receiving circuit in which the circuit resonator is arranged.

7. A resonator system as claimed in claim 6 , wherein the oscillator circuit can be switched off as soon as the transmitting and/or receiving circuit respectively transmits and/or receives.

8. A resonator system as claimed in claim 2 , further comprising setting parts for setting a circuit frequency signal which is mixed with an output signal of a filter circuit, the setting parts being designed such that the oscillator circuit frequency also can be set by the setting parts.

9. A resonator system as claimed in claim 2 , wherein the oscillator circuit includes an oscillator which further serves as an oscillator for a circuit in which a circuit frequency signal is generated.

10. A resonator system as claimed in claim 1 , further comprising at least one second tunable circuit resonator.

11. A resonator system as claimed in claim 10 , wherein the first and second tunable circuit resonators are detuned with respect to one another.

12. A resonator system as claimed in claim 10 , further comprising a ladder-type filter in which the first and second tunable circuit resonators are arranged.

13. A resonator system as claimed in claim 1 , wherein the tunable reference resonator and the first tunable circuit resonator originate from a same wafer.

14. A resonator system as claimed in claim 1 , wherein the tunable reference resonator and the first tunable circuit resonator are adjacently arranged.

15. A resonator system as claimed in claim 1 , further comprising parts for thermally coupling the tunable reference resonator and the first tunable circuit resonator.

16. A method for resonator tuning, the method comprising the steps of:

tuning a tunable reference resonator to a reference value via a controlled variable for the reference resonator; and

using the controlled variable for the reference resonator as a measure of the tuning of at least one tunable circuit resonator;

wherein at least one of the reference resonator and the circuit resonator is designed as at least one of a surface acoustic wave component, a bulk acoustic wave component, and a diaphragm oscillator.

Assignments (12)