Digital self-aware charge pump calibration technique for frequency synthesizers

• As radio design complexity increases and features sizes decrease, more innovative solutions are explored to ensure analog circuit designs meet specifications. Digital calibration is an inexpensive and effective solution. A novel digital calibration technique to improve charge pump current mismatch in frequency synthesizers is presented. This method detect. The charge pump error by measurin. The low pass filter voltage oy the system forced to operate at a fixed phase error. A reference table developed from a mathematical model oy the system use. The measurement result to produce a digital control word. The digital control word acts on a charge pump array to correc. The error. The technique is implemented and tested in Matlab/Simulink for a case study frequency synthesizer. The calibration technique correct. The charge pump current absolute error to within 1.4% oy the nominal value. Additionally. The technique is exceptionally effective for correctin. The charge pump current mismatch to within 1%.

Ämnesord

TEKNIK OCH TEKNOLOGIER  -- Elektroteknik och elektronik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)

Nyckelord

Absolute error

Analog Circuit Design

Calibration techniques

Charge pump

Charge pump currents

Digital calibrations

Digital control

Effective solution

Innovative solutions

MATLAB /simulink

Measurement results

Phase error

Radio design

System use

Calibration

Digital control systems

Frequency synthesizers

Integrated circuit manufacture

Low pass filters

Mathematical models

Pumps

Publikations- och innehållstyp

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