Invention Grant
- Patent Title: Low-complexity inverse sinc for RF sampling transmitters
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Application No.: US17492710Application Date: 2021-10-04
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Publication No.: US11757475B2Publication Date: 2023-09-12
- Inventor: Jaiganesh Balakrishnan , Sriram Murali , Sundarrajan Rangachari , Yeswanth Guntupalli
- Applicant: TEXAS INSTRUMENTS INCORPORATED
- Applicant Address: US TX Dallas
- Assignee: TEXAS INSTRUMENTS INCORPORATED
- Current Assignee: TEXAS INSTRUMENTS INCORPORATED
- Current Assignee Address: US TX Dallas
- Agent John R. Pessetto; Frank D. Cimino
- Priority: IN 1941037591 2019.09.18
- Main IPC: H04B1/10
- IPC: H04B1/10 ; H04B1/00

Abstract:
A radio-frequency (RF) sampling transmitter (e.g., of the type that may be used in 5G wireless base stations) includes a complex baseband digital-to-analog converter (DAC) response compensator that operates on a complex baseband signal at a sampling rate lower than the sampling rate of an RF sampling DAC in the RF sampling transmitter. The DAC response compensator flattens the sample-and-hold response of the RF sampling DAC only in the passband of interest, addressing the problem of a sin c response introduced by the sample-and-hold operation of the RF sampling DAC and avoiding the architectural complexity and high power consumption of an inverse sin c filter that operates on the signal at a point in the signal chain after it has already been up-converted to an RF passband.
Public/Granted literature
- US20220029644A1 LOW-COMPLEXITY INVERSE SINC FOR RF SAMPLING TRANSMITTERS Public/Granted day:2022-01-27
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