System and method for filter enhancement
AssigneeQUALCOMM Incorporated
InventorWilhelm Steffen Hahn
Life of this patent
Estimating the term…
Abstract
A system for filter enhancement, preferably including one or more analog taps and a controller, and optionally including one or more couplers. The system is preferably configured to integrate with a filter, such as a passband filter or other frequency-based filter. The system can be configured to integrate with an RF communication system, an RF front end, or any other suitable RF circuitry. A method for filter enhancement, preferably including configuring one or more analog taps, and optionally including calibrating a system for filter enhancement and/or receiving temperature information.
Claims19
A system for filter enhancement, the system configured to be electrically coupled in parallel with a filter, the system comprising:
- an analog tap comprising:
- a variable attenuator;
- a variable phase shifter;
- and
- a delay;
- wherein the variable attenuator, the variable phase shifter, and the delay are electrically coupled in a series arrangement;
- and
- control logic operable to:
- receive a temperature measurement;
- and
- control the analog tap based on the temperature measurement, comprising dynamically tuning the variable attenuator and the variable phase shifter based on the temperature measurement.
A filter system comprising:
- a radio frequency (RF) filter electrically coupled along a primary signal path;
- an analog tap electrically coupled to the primary signal path in parallel with the RF filter, the analog tap comprising a set of RF components electrically coupled in a series arrangement, the set of RF components comprising:
- an attenuator;
- a phase shifter;
- and
- a delay;
- wherein at least one RF component of the set of RF components is operable to be dynamically tuned;
- and
- control logic configured to dynamically tune the at least one RF component based on a performance characteristic associated with the RF filter.
Dependencies are inferred from the claim text.