Qualcomm Incorporated

Chen Jiang

Dongwon Seo

Shahin Mehdizad Taleie

Roberto Rimini

Bhushan Shanti Asuri

Udara Fernando

Shrenik Patel

Behnam Sedighi

Nitz Saputra

Ibrahim Ramez Chamas

Anant Gupta

An RF-DAC transmitter is provided that includes an in-phase channel, a quadrature-phase channel, a first intermediate-phase channel, and a second intermediate-phase channel. Each channel includes a pair of interleaved RF-DACs for producing a pair of interleaved RF signals and a subtractor.

Digital RF-DAC

Certain aspects of the present disclosure generally relate to a programmable multi-mode digital-to-analog converter (DAC) for generating a frequency-modulated signal. For example, certain aspects provide a circuit for sweeping a frequency of an output signal. The circuit generally includes a DAC having an input coupled to an input path of the circuit and an output coupled to an output path of the circuit, a first mixer selectively incorporated in the input path coupled to the input of the DAC, and a second mixer selectively incorporated in the output path coupled to the output of the DAC.

Programmable multi-mode digital-to-analog converter (DAC) for wideband applications

Growing community of inventors

Davis, CA, United States of America

Chen Jiang