Invention Grant
- Patent Title: Low-complexity inverse sinc for RF sampling transmitters
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Application No.: US17022871Application Date: 2020-09-16
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Publication No.: US11171674B2Publication Date: 2021-11-09
- 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; Charles A. Brill; Frank D. Cimino
- Priority: IN201941037591 20190918
- Main IPC: H04L5/12
- IPC: H04L5/12 ; H04L23/02 ; 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 sinc 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 sinc 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
- US20210083695A1 LOW-COMPLEXITY INVERSE SINC FOR RF SAMPLING TRANSMITTERS Public/Granted day:2021-03-18
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