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US 2021/0203049 A1Published application
Reconfigurable Filter Based on Commutation of Single Frequency Resonators
AssigneeNortheastern University
InventorsMatteo RINALDI, Giuseppe MICHETTI
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Abstract
Adaptive RF filters based on modulated resonators are provided. The filter architecture is based on time-interleaved commutation of passive RF resonators. The architecture can behave as a two-port filter network, with a fully tunable instantaneous filter bandwidth. The filters are applicable as miniaturized, environment-aware RF signal processing components and can be used in mobile communications.
Claims20
A filter device comprising:
- a substrate, an electrical input port and an electrical output port supported on the substrate;
- at least two resonators having a same resonant frequency, the resonators connected on parallel paths between the input port and the output port;
- and
- a plurality of switch elements comprising, on each path, a pair of switches, a first switch of the pair connected between the input port and the resonator and a second switch of the pair connected between the resonator and the output port, the switches operable to be sequentially commutated at a modulation period and a duty cycle selected to provide a bandpass mode or a bandstop mode.
1 more element
A circuit device including a filter device, the filter device comprising:
- a substrate, an electrical input port and an electrical output port supported on the substrate;
- at least two resonators having a same resonant frequency, the resonators connected on parallel paths between the input port and the output port;
- and
- a plurality of switch elements comprising, on each path, a pair of switches, a first switch of the pair connected between the input port and the resonator and a second switch of the pair connected between the resonator and the output port, the switches operable to be sequentially commutated at a modulation period and a duty cycle selected to provide a bandpass mode or a bandstop mode.
1 more element
A method of operating a filter device,
- the filter device comprising:
- a substrate, an electrical input port and an electrical output port supported on the substrate;
- at least two resonators having a same resonant frequency, the resonators connected on parallel paths between the input port and the output port;
- and
- a plurality of switch elements comprising, on each path, a pair of switches, a first switch of the pair connected between the input port and the resonator and a second switch of the pair connected between the resonator and the output port, the switches operable to be sequentially commutated at a modulation period and a duty cycle selected to provide a bandpass mode or a bandstop mode;
- the method comprising operating the switch assemblies to actuate the resonators over time in the bandpass mode or the bandstop mode.
3 more elements
Dependencies are inferred from the claim text.