Acoustic wave filter with temperature sensor
AssigneeSkyworks Solutions, Inc.
InventorsJoshua James Caron, Joel Anthony Penticoff
Life of this patent
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Abstract
Aspects of this disclosure relate to a surface acoustic wave filter with an integrated temperature sensor. The integrated temperature sensor can be a resistive thermal device configured as a reflective grating for a surface acoustic wave resonator, for example. A radio frequency system can provide over temperature protection by reducing a power level of a radio frequency signal provided to the surface acoustic wave filter responsive to an indication of temperature provided by the integrated temperature sensor satisfying a threshold.
Claims21
(canceled)
A method of over temperature protection for an acoustic wave filter, the method comprising:
- detecting an over temperature condition associated with an acoustic wave filter, the acoustic wave filter including a plurality of acoustic wave resonators, and the acoustic wave filter being a transmit filter;
- and
- in response to the detecting the over temperature condition, reducing a power level of a radio frequency signal provided to the acoustic wave filter.
A radio frequency system with over temperature protection, the radio frequency system comprising:
- an acoustic wave filter configured to filter a radio frequency signal, the acoustic wave filter including a plurality of acoustic wave resonators, and the acoustic wave filter being a transmit filter;
- and
- an over temperature circuit configured to detect an over temperature condition associated with the acoustic wave filter, and to cause a power level of the radio frequency signal to be reduced responsive to detecting the over temperature condition.
A packaged module comprising:
- an acoustic wave filter configured to filter a radio frequency signal, the acoustic wave filter including a plurality of acoustic wave resonators, and the acoustic wave filter being a transmit filter;
- an over temperature circuit configured to detect an over temperature condition associated with the acoustic wave filter, and to cause a power level of the radio frequency signal to be reduced responsive to detecting the over temperature condition;
- and
- a package enclosing the acoustic wave filter and the over temperature circuit.
Dependencies are inferred from the claim text.