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A direct digital RF amplitude modulator

Publiceringsår: 2002
Språk: Engelska
Sidor: 141-144
Publikation/Tidskrift/Serie: Proceedings - IEEE International Symposium on Circuits and Systems
Volym: 1
Dokumenttyp: Konferensbidrag
Förlag: Institute of Electrical and Electronics Engineers Inc.


This paper describes a direct digital RF amplitude modulator, which uses a 10-bit linear interpolation current steering digital to analog converter (DAC) and a Gilbert cell mixer to generate an RF amplitude modulated signal directly. The linear interpolation increases the attenuation of the DAC's image components. The low pass filter (LPF) is eliminated, and the RF transmitter structure can be simplified. This modulator is suitable for realizing the system-on-chip design. The chip has been fabricated in a 0.35μm, 3.3V digital CMOS process.



  • Technology and Engineering
  • RF amplitude modulator
  • System-on-chip
  • Gilbert cell mixer


2002 IEEE International Symposium on Circuits and Systems
Phoenix, AZ
  • ISSN: 0271-4310

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