International Business Machines Corporation

Pat Rosno

Sudipto Chakraborty

Layne A Berge

Rajiv V Joshi

Phillip V Mann

John Francis Bulzacchelli

Paul Eric Dahlen

Raymond Alan Richetta

George Russell Zettles, Iv

Daniel Ramirez

Timothy Joseph Schmerbeck

Kyle Schoneck

Ray Clement Laning

Brandon R Christenson

Joseph Allen Glick

A device comprises a radio frequency (RF) signal generator and a calibration system. The RF signal generator is configured to upconvert a baseband signal to an RF signal using first and second LO signals. The RF signal generator comprises first and second signal paths to process first and second differential signals. The calibration system comprises calibration control circuitry and actuator circuitry. In response to digital control signals generated by the calibration control circuitry, the actuator circuitry is configured to: inject currents into the first and second signal paths to adjust offsets of the first and second differential signals, and to balance amplitudes of the first and second differential signals; and adjust at least one of respective duty cycles of the first and second local oscillator signals, and a phase difference between the first and second local oscillator signals.

Spur and image suppression in a radio frequency signal generator

Systems for optimizing mounting points for coaxial RF connectors, including a printed circuit board (PCB) comprising a coaxial radio frequency (RF) connector; a faceplate comprising an opening adapted to receive the coaxial RF connector; and a bushing positioned within the opening, wherein the coaxial RF connector is positioned within the bushing.

Optimizing mounting points for coaxial RF connectors

A filter stage system, includes a continuous time baseband filter comprising a feedback loop that employs at least one first impedance node and at least one second impedance node, wherein the at least one first impedance node has a higher impedance than the at least one second impedance node, and wherein the at least one first impedance node provides a dominant pole and the at least one second impedance node provides a non-dominant pole, and wherein the continuous time baseband filter generates a filtered current, and a mirroring component mirrors the filtered current to an output.

Current mode transconductance capacitance filter within a radio frequency digital to analog converter

Surface mount device (SMD) placement to control a signal path in a printed circuit board (PCB), including: adding, to a PCB, a plurality of signal path segments, each signal path segment of the plurality of signal path segments ending at corresponding pad of a plurality of pads, wherein a first pad of the plurality of pads is couplable to a second pad of the plurality of pads to create a first signal path and is couplable to a third pad of the plurality of pads to create a second signal path; and coupling, via a discrete SMD, the first pad and the second pad to create the first signal path comprising a first signal path segment of the plurality of signal path segments and a second signal path segment of the plurality of signal path segments.

Surface mount device placement to control a signal path in a printed circuit board

A method of validating support circuits of a qubit array includes generating virtual control waveforms from one or more abstracted support circuits of the qubit array. An abstracted pulse sequence is created from the virtual control waveforms. The abstracted pulse sequence is converted into waveforms. The waveforms are sent to individual qubits of the qubit array. Output data from the qubit array is captured in response to the sent waveforms.

Virtual to real waveform emulator

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Rochester, MN, United States of America

Pat Rosno