Invention Grant
- Patent Title: Current-mode signal path of an integrated radio frequency pulse generator
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Application No.: US17564859Application Date: 2021-12-29
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Publication No.: US11641188B1Publication Date: 2023-05-02
- Inventor: Sudipto Chakraborty , John Francis Bulzacchelli , David James Frank
- Applicant: International Business Machines Corporation
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Amin, Turocy & Watson, LLP
- Main IPC: H03K3/012
- IPC: H03K3/012 ; G06N10/40 ; H03K5/1252

Abstract:
One or more systems, devices and/or methods of use provided herein relate to a device that can facilitate a signal generation. A current-mode end-to-end signal path can include a digital to analog converter (DAC) operating in current-mode and an upconverting mixer, operating in current-mode and operatively coupled to the DAC. Analog inputs and analog outputs of the DAC and the upconverting mixer can be represented as currents, and the DAC can generate a baseband signal. In one or more embodiments, a current source and a diode-connected transistor can be arranged in parallel in the current-mode signal path between a baseband filter and an output stage comprising the upconverting mixer. The device and/or system can be a radio frequency DAC. The diode-connected transistor can be programmable to vary gain and/or can be directly connected to the output stage absent a turnaround current mirror connected therebetween.
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