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US 2018/0006628 A1Published application
Method, System, and Apparatus for Resonator Circuits and Modulating Resonators
AssigneePeregrine Semiconductor Corporation
InventorsMark L. Burgener, James S. Cable
Life of this patent
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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.
Claims31
A filter module for providing a pass-band and a tunable rejection band, comprising:
- an acoustic wave resonator (AWR), the AWR having a resonant frequency (RFA) and an anti-resonant frequency (AFA);
- and
- a capacitor module coupled in parallel to the AWR, the capacitor module configured to modify the transduction of the electrical signal by the AWR.
A filter module for providing a tunable pass-band and a tunable rejection band, comprising:
- an acoustic wave resonator (AWR), the AWR having a resonant frequency (RFA) and an anti-resonant frequency (AFA);
- a first capacitor module coupled in parallel to the AWR, the first capacitor module configured to modify the transduction of the electrical signal by the AWR;
- and
- a second capacitor module coupled in series to the AWR and the first capacitor module, the second capacitor module configured to modify the transduction of the electrical signal by the AWR.
1 more element
A filter module for providing a switchable pass-band and a tunable rejection band, the filter module comprising:
- an acoustic wave resonator (AWR), the AWR having a resonant frequency (RFA) and an anti-resonant frequency (AFA);
- a switch coupled in series with the AWR, wherein the AWR is inoperative when the switch is opened and active when the switch is closed;
- a capacitor module coupled in parallel to the switch and the AWR, the capacitor module configured to modify the transduction of the electrical signal by the AWR when the switch is closed.
A filter module for providing a switchable pass-band and a tunable rejection band, the filter module comprising:
- a first acoustic wave resonator (AWR), the first AWR having a resonant frequency (RFA1) and an anti-resonant frequency (AFA1);
- a first switch coupled in series with the first AWR, wherein the first AWR is inoperative when the first switch is opened and active when the first switch is closed;
- a second AWR, the second AWR having a resonant frequency (RFA2) different from RFA1, and an anti-resonant frequency (AFA2) different from AFA1;
- a second switch coupled in series with the second AWR, wherein the second AWR is inoperative when the second switch is opened and active when the second switch is closed, and wherein a combination of the first switch and first AWR is coupled in parallel to a combination of the second switch and second AWR;
- and
- a first capacitor module coupled in parallel to a) the the combination of the first switch and first AWR and b) the combination of the second switch and second AWR, the first capacitor module configured to modify the transduction of the electrical signal by one of the first AWR and the second AWR when the corresponding one of the first switch and the second switch is closed.
3 more elements
A filter module, including:
- a switchable pass-band and tunable rejection band filter module, comprising:
- a first acoustic wave resonator (AWR);
- a first switch coupled serially to the first AWR wherein the first AWR is inoperative when the first switch is opened and active when the first switch is closed, the first AWR having a resonant frequency (RFA1) and an anti-resonant frequency (AFA1);
- a second AWR;
- a second switch coupled serially to the second AWR,
- wherein:
- (a) the second AWR is inoperative when the second switch is opened and active when the second switch is closed;
- (b) a combination of the first switch and first AWR is coupled in parallel to a combination of the second switch and second AWR;
- (c) the second AWR has a resonate frequency (RFA2) and an anti-resonate frequency (AFA2), wherein the RFA1 and RFA2 are offset in frequency;
- and
- a first variable capacitor coupled in parallel with the combination of the first switch and the first AWR, the first variable capacitor configured to vary at least one of the AFA1 and the AFA2 thereby configuring the switchable pass-band and tunable rejection band filter module;
- and
- a tunable filter module, comprising:
- a third AWR, the third AWR coupled to the first AWR and the second AWR, the third AWR configured to filter electrical signals and having a resonate frequency (RFA3) and an anti-resonate frequency (AFA3);
- and
- a second variable capacitor configured to vary the AFA3 thereby configuring the tunable filter module.
13 more elements
An electrical signal processing system, including:
- a first acoustic wave resonator (AWR), the AWR having a resonant frequency (RFA1) and an anti-resonant frequency (AFA1), and
- a first variable capacitor module (FVCM) coupled to the first AWR, the FVCM having a plurality of selectable capacitances configurable for modifying RFA1 and AFA1;
- wherein:
- at least one of the plurality of selectable capacitances is selected based on statistical data representing at least one of:
- a) an anti-resonant frequency probability function representing manufacturing variations of the first AWR and b) a resonant frequency probability function representing manufacturing variations of the first AWR.
2 more elements
An electrical signal processing system, including:
- a tunable filter module comprising a first variable capacitor module (FVCM) coupled to a first acoustic wave resonator (AWR), the FVCM having a plurality of selectable capacitances;
- a memory device having stored thereon, variable capacitor deltas for various voltage standing wave ratios, the voltage standing wave ratios related to ratios between target input and output impedances for the tunable filter module;
- and
- a control logic module configured for using the memory device to select at least one of the plurality of selectable capacitances based at least in part on the variable capacitor deltas stored in the memory device and a derived voltage standing wave ratios differential.
1 more element
Dependencies are inferred from the claim text.