Radio frequency receiver and method for down-converting signals to baseband signal components
AssigneeStichting IMEC Nederland
InventorsEric Antonius Maria Klumperink, Vijaya Kumar Purushothaman
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Abstract
A radio frequency receiver comprising mixer circuitry to down-convert a received signal, which is transported on a signal line to baseband signal components, is provided. The mixer circuitry comprises a plurality of switched capacitors, each connected to the signal line through a signal side node and to a corresponding switch through a switch side node. In this context, a voltage is sensed at each switch side node of the plurality of switched capacitors and is read out through a respective grounded capacitor.
Claims20
A radio frequency receiver comprising:
- a mixer circuitry to down-convert a received signal that is transported on a signal line to baseband signal components, wherein the mixer circuitry is arranged in a bottom plate configuration and further comprises:
- a plurality of switched capacitors, each of the plurality of switched capacitors is driven according to a respective clock phase and is connected to the signal line through a signal side node;
- and
- a switch side node connecting a corresponding switch to the signal side node such that a voltage detected at each switch side node of the plurality of switched capacitors and is read out through a respective grounded capacitor driven according to a second clock phase, wherein the second clock phase is different than the clock phase.
A method for down-converting a received signal that is transported on a signal line to baseband signal components in a radio frequency receiver comprising mixer circuitry arranged in a bottom plate configuration, wherein the method comprises:
- connecting each of a plurality of switched capacitors to the signal line through a signal side node, wherein each of the plurality of switched capacitors is driven according to a respective clock phase;
- and
- connecting each of the plurality of switched capacitors to a corresponding switch through a switch side node;
- sensing a voltage at each switch side node of the plurality of switched capacitors;
- and
- reading out the sensed voltage through a respective grounded capacitor driven according to a second clock phase, wherein the second clock phase is different than the clock phase driving the corresponding switch associated with one of the plurality of switched capacitors.
Dependencies are inferred from the claim text.