Title :
A direct digital frequency synthesis system for low power communications
Author :
McEwan, Alistair ; Shah, Sunay ; Collins, Steve
Author_Institution :
Dept. of Eng. Sci., Oxford Univ., UK
Abstract :
This work describes a direct digital frequency synthesis (DDFS) architecture based on nonlinear interpolation for signal generation in mobile communications systems such as Bluetooth. DDFS is capable of well controlled, rapid changes in frequency, over a relatively large frequency range, however a conventional DDFS system requires a power hungry ROM. To avoid this problem a ROM-less architecture with a low power nonlinear interpolation DAC is proposed. This system is robust to parameter variations and consumes only 5mW at 100MHz.
Keywords :
Bluetooth; digital-analogue conversion; direct digital synthesis; interpolation; low-power electronics; mobile communication; nonlinear systems; read-only storage; 100 MHz; 5 mW; Bluetooth; DDFS; ROM-less architecture; direct digital frequency synthesis system; large frequency range; low power communications; low power nonlinear interpolation DAC; mobile communications systems; parameter variations; robust system; signal generation; Bluetooth; Communication system control; Control system synthesis; Control systems; Frequency synthesizers; Interpolation; Mobile communication; Read only memory; Signal generators; Signal synthesis;
Conference_Titel :
Solid-State Circuits Conference, 2003. ESSCIRC '03. Proceedings of the 29th European
Conference_Location :
Estoril, Portugal
Print_ISBN :
0-7803-7995-0
DOI :
10.1109/ESSCIRC.2003.1257155
