公开(公告)号：US20210119661A1

公开(公告)日：2021-04-22

申请号：US17072104

申请日：2020-10-16

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Sriram MURALI ,  Jaiganesh BALAKRISHNAN ,  Pooja SUNDAR ,  Harshavardhan ADEPU ,  Wenjing LU ,  Yeswanth GUNTUPALLI

IPC: H04B1/40 ,  H04B1/00

Abstract: A digital up-converter (DUC) includes conjugate-mixer-combiner. The conjugate-mixer-combiner includes a pre-combiner configured to generate combinations of a first in-phase (I) value to be transmitted at a first frequency of a first frequency band, a first quadrature (Q) value to be transmitted at the first frequency of a first frequency band, a second I value for to be transmitted at a second frequency of a second frequency band, and a second Q value to be transmitted at the second frequency of a second frequency band. The conjugate-mixer-combiner further includes a plurality of multipliers collectively configured to shift the combinations based on an average difference between the first frequency and the second frequency.

公开(公告)号：US20220029657A1

公开(公告)日：2022-01-27

申请号：US17493943

申请日：2021-10-05

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Sriram MURALI ,  Jaiganesh BALAKRISHNAN ,  Pooja SUNDAR ,  Harshavardhan ADEPU ,  Wenjing LU ,  Yeswanth GUNTUPALLI

IPC: H04B1/40 ,  H04B1/00

Abstract: A digital up-converter (DUC) includes conjugate-mixer-combiner. The conjugate-mixer-combiner includes a pre-combiner configured to generate combinations of a first in-phase (I) value to be transmitted at a first frequency of a first frequency band, a first quadrature (Q) value to be transmitted at the first frequency of a first frequency band, a second I value for to be transmitted at a second frequency of a second frequency band, and a second Q value to be transmitted at the second frequency of a second frequency band. The conjugate-mixer-combiner further includes a plurality of multipliers collectively configured to shift the combinations based on an average difference between the first frequency and the second frequency.