Invention Grant
- Patent Title: Digital predistortion and uptilt and cable communication
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Application No.: US14982701Application Date: 2015-12-29
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Publication No.: US09660675B2Publication Date: 2017-05-23
- Inventor: Patrick Pratt
- Applicant: Analog Devices Global
- Applicant Address: BM Hamilton
- Assignee: Analog Devices Global
- Current Assignee: Analog Devices Global
- Current Assignee Address: BM Hamilton
- Agency: Schwegman Lundberg & Woessner, P.A.
- Main IPC: H04L25/03
- IPC: H04L25/03 ; H04B1/04 ; H04L27/36 ; H03F3/24 ; H03F3/19 ; H03M1/66 ; H03M1/12

Abstract:
Otherwise incompatible digital predistortion and uptilt can be used together, such as in a cable television or other cable communications system having a frequency-dependent signal loss at high frequencies. The predistortion can be used to compensate for a nonlinear gain compression of a power amplifier at higher frequencies. Additional uptilt and equalizer circuits can be included to address deleterious distortion effects that may otherwise arise by using predistortion and uptilt together. Training and adaptation of various components are described. Fine and coarse uptilt adjustments can be provided.
Public/Granted literature
- US20170104502A1 DIGITAL PREDISTORTION AND UPTILT AND CABLE COMMUNICATION Public/Granted day:2017-04-13
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