Mixer Circuit

A mixer having input nodes for receiving signals to be mixed, and comprising at least two gates, each arranged to selectively couple a respective input node to an output node, the gates being arranged to be driven by respective sampling clock signals, each gate comprising at least one FET having a respective control node and a source node, the mixer having circuitry for applying a voltage between the control and source nodes of the at least one FET in the on state, which voltage is independent of signals at the input nodes.

A mixer having an input node for receiving a signal, and plural output nodes, the mixer comprising at least two gates, each arranged to selectively couple a respective input node to a respective output node, the gates being arranged to be driven by respective sampling clock signals, each gate comprising at least one FET having a respective control node and a source node, the mixer having circuitry for applying a voltage between the control and source nodes of the at least one FET in the on state, which voltage is independent of the signal at the input node.

A method of operating a gating circuit using an input signal, the gating having first and second supply rails providing first and second supply voltages, the method comprising adding, to the input signal voltage, a voltage substantially equal to the mean of the supply rail voltages.

A mixer having input nodes for receiving signals to be mixed, and comprising at least one gate arranged to selectively couple an input node to an output node, the gate being arranged to be driven by a sampling clock signal, the gate comprising at least one transistor having a respective control node, the mixer having circuitry for applying a voltage between the control and reference nodes of the at least one transistor in the on state, which voltage is independent of signals at the input nodes.