Patent · US Active

Polar modulation without analog filtering

US7619487B2 · kind B2 · utility

3Cited by

2References

21Claims

0Family size

Assignee

Infineon Technologies AG · DE

Inventor

Andreas Schmid · Duisburg, DE

Key dates

Filing date	Sep 14, 2007
Grant date	Nov 17, 2009
Priority date	—
Expiry date	Mar 5, 2028

Classification

Technology area (CPC H)Electricity
CPC primaryH04L27/361
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

This disclosure relates to systems and methods for polar modulation without analog filters. Digitals filters, a second order hold interpolator and a reconfigurable third order noise shaper can be used instead of the analog filters used in conventional polar modulators. The polar modulator receives either receives the input in polar coordinates or converts the signal into polar phase and amplitude components. The phase and amplitude components are processed separately using digital signal processing components including digital filters, PLL, interpolator and noise shaper. The processed phase and amplitude components are then mixed to generate the modulated signal.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.