Invention Grant
- Patent Title: Digital modulation jitter compensation for polar transmitter
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Application No.: US13412533Application Date: 2012-03-05
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Publication No.: US09699014B2Publication Date: 2017-07-04
- Inventor: Markus Schimper , Franz Kuttner
- Applicant: Markus Schimper , Franz Kuttner
- Applicant Address: DE Neubiberg
- Assignee: Infineon Technologies AG
- Current Assignee: Infineon Technologies AG
- Current Assignee Address: DE Neubiberg
- Agency: Shumaker & Sieffert, P.A.
- Main IPC: H04L27/36
- IPC: H04L27/36

Abstract:
This disclosure is directed towards techniques and methods of suppressing the effect of modulated clock jitter in a digital to analog conversion (DAC) circuit of a polar modulator in a transceiver. A phase locked loop (PLL) in a modulator circuit may introduce a deterministic jitter in DAC generated pulses which may lead to amplitude variations in the DAC generated pulses. The clock jitter may change the duty cycle of the input amplitude to the DAC which may result in a variation of the output of the DAC generated pulse. A digital pre-distortion or digital multiplier circuit may be introduced before the DAC circuit to increase or decrease the DAC amplitude to compensate for the pulse width modulation.
Public/Granted literature
- US20120170673A1 DIGITAL MODULATION JITTER COMPENSATION FOR POLAR TRANSMITTER Public/Granted day:2012-07-05
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