Title :
A 415 MHz direct digital quadrature modulator in 0.25-μm CMOS
Author :
Wu, Yanlin ; Fu, Dengwei ; Willson, Alan
Author_Institution :
Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA
Abstract :
With a 32-bit frequency-control-word and two 15-bit (I and Q) data inputs, while employing less hardware than a conventional 2-multiplier/DDFS approach, this interleaved IC provides a quadrature DDFS (nearly for free!) with 100 dB spurious-free dynamic range and produces a 16-bit modulated sinusoidal output. Power dissipation is 0.5 W at an 830 MHz clock-rate with a 2.5 V supply.
Keywords :
CMOS digital integrated circuits; UHF integrated circuits; direct digital synthesis; modulators; 0.25 micron; 0.5 W; 15 bit; 16 bit; 2.5 V; 32 bit; 415 MHz; 830 MHz; CMOS; DDQM; direct digital quadrature modulator; modulated sinusoidal output; quadrature DDFS; spurious-free dynamic range; Clocks; Digital modulation; Dynamic range; Frequency; Hardware; Laboratories; Logic gates; Power dissipation; Read only memory; Signal generators;
Conference_Titel :
Custom Integrated Circuits Conference, 2003. Proceedings of the IEEE 2003
Print_ISBN :
0-7803-7842-3
DOI :
10.1109/CICC.2003.1249405
