Abstract
A highly integrated CMOS direct digital RF quadrature modulator, consisting of two 10-bit linear interpolation current steering digital-to-analog converters (DACs) and two Gilbert cell based mixers, is described. By employing linear interpolation, the attenuation of the DAC's image components is significantly increased, and the reconstruction filter is therefore eliminated. The DAC's differential current signals are directly sent to the mixer, which improves the linearity of the modulated RF signal. Measurement results on operations of 16 QAM and GSM are presented. This structure is suitable for system-on-chip (SOC) design
Original language | English |
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Title of host publication | ESSCIRC 2004 - 29th European Solid-State Circuits Conference |
Publisher | IEEE - Institute of Electrical and Electronics Engineers Inc. |
Pages | 573-576 |
ISBN (Print) | 0-7803-7995-0 |
DOIs | |
Publication status | Published - 2003 |
Event | ESSCIRC 2004 - 29th European Solid-State Circuits Conference - Estoril, Portugal Duration: 2003 Sept 16 → 2003 Sept 18 |
Conference
Conference | ESSCIRC 2004 - 29th European Solid-State Circuits Conference |
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Country/Territory | Portugal |
City | Estoril |
Period | 2003/09/16 → 2003/09/18 |
Subject classification (UKÄ)
- Electrical Engineering, Electronic Engineering, Information Engineering
Free keywords
- direct digital RF quadrature modulator
- modulated RF signal
- SOC design
- differential current signals
- reconstruction filter
- Gilbert cell based mixers
- linear interpolation
- CMOS
- digital-to-analog converters