Programmable harmonic rejection mixer (HRM)/subharmonic mixer (SHM) topology
AssigneeAnalog Devices, Inc.
InventorsPeter Delos, Ed Balboni
Life of this patent
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Abstract
One embodiment is a reconfigurable mixer topology for selectively implementing one of a harmonic rejection mixer (HRM) and a subharmonic mixer (SHM), the reconfigurable mixer topology comprising a mixer core comprising a plurality of differential mixers each having a first clock input and a second clock input; a clock generator for generating a plurality of clock signals each having a different phase; and a clock distributor for distributing the plurality of clock signals to the first and second clock inputs of the differential mixers in accordance with a designated operation of the reconfigurable mixer as an HRM or an SHM.
Claims20
A reconfigurable mixer topology for implementing one of a harmonic rejection mixer (HRM) and a subharmonic mixer (SHM) according to a designated mode of operation, the reconfigurable mixer topology comprising:
- a mixer core comprising a plurality of differential mixers each having a first clock input and a second clock input;
- a clock generator to generate a plurality of clock signals having respective specified phases relative to each other;
- a clock distributor to distribute the plurality of clock signals to the first and second clock inputs of the differential mixers in accordance with the designated mode of operation of the reconfigurable mixer topology as the HRM or the SHM according to a selection of an HRM mode or an SHM mode;
- and
- at least one resistor associated with at least one of the differential mixers, the at least one resistor bridged by a switch;
- and
- wherein a state of the switch is controlled according to the designated mode of operation.
A system comprising a power divider, a configurable harmonic rejection mixer (HRM)/subharmonic mixer (SHM) mixer core, a power combiner and a tunable bandpass filter, wherein the configurable HRM/SHM mixer core comprises:
- a plurality of differential mixers each having a first clock input and a second clock input;
- a clock distributor to distribute a plurality of clock signals to the first and second clock inputs of the differential mixers in accordance with a designated mode of operation of the configurable HRM/SHM mixer core as an HRM or an SHM;
- and
- at least one resistor associated with at least one of the differential mixers, the at least one resistor bridged by a switch;
- and
- wherein a state of the switch is controlled according to the designated mode of operation.
A method of reconfiguring a mixer topology as implementing one of a harmonic rejection mixer (HRM) and a subharmonic mixer (SHM) according to a designated mode of operation,
- wherein the mixer topology comprises a mixer core comprising a plurality of differential mixers each having a first clock input and a second clock input, and at least one resistor associated with at least one of the differential mixers, the at least one resistor bridged by a switch, the method comprising:
- generating a plurality of clock signals each having a different phase;
- and
- distributing the plurality of clock signals to the first and second clock inputs of the differential mixers in accordance with the designated mode of operation of the mixer topology as the HRM or the SHM;
- wherein a state of the switch is controlled according to the designated mode of operation.
Dependencies are inferred from the claim text.