Intel Corporation

Naor Shay

Ofir Degani

Assaf Ben-Bassat

Ina Shternberg

Anna Nazimov

Ashoke Ravi

David Ben-Haim

Limor Zohar

Yishai Eilat

Techniques are disclosed to instruct how a switched capacitor digital power amplifier (PA) is configured to operate using high supply voltage levels beyond twice the maximum voltage rating for any of the transistor terminals such as Vds/Vdg/Vsg. The digital PA has a topology that comprises a dual-feedback capacitive path that comprises a capacitive divider and a voltage stabilizing feedback path to selectively couple the capacitive divider to DC bias voltages.

Dual feedback stacking method for increasing digital power amplifier supply range

Techniques are described to address P-MOS bias temperature instability (BTI) stress issues within capacitive radio frequency digital-to-analog converter (CDAC) using a circuit architecture solution that functions to protect the transistors in various operating conditions. Techniques are disclosed that function to float one or both of the negative and positive power supply rail voltages higher or lower, respectively, for CDAC cells depending upon various operating scenarios. These scenarios include the transmitting state of individual CDAC cells and the transmitting state of the CDAC array in which the CDAC cell is implemented.

Dynamic power rail floating for CDAC circuits

Various embodiments provide systems, devices, and methods for a multi-core digital power amplifier with an unbalanced power combiner. In one example, two or more cores are combined with a transformer section that has a first coupling coefficient and another two or more cores are combined with a second transformer section that has a second coupling coefficient that is different than the first coupling coefficient. The outputs of different cores may be cross-coupled with the primary inductors of the transformers. The digital power amplifier may provide an output power that is flat over a relatively wide operating range. Other embodiments may be described and claimed.

Multi-core digital power amplifier with unbalanced combiner

Techniques are disclosed to allow for a switched capacitor digital power amplifier (PA) that operates using high supply voltage levels beyond twice the maximum voltage rating for any of the transistor terminals such as Vds/Vdg/Vsg.

Growing community of inventors

Rehovot, Israel

Naor Shay