Title :
Low-power ultra-wideband wavelets generator with fast start-up circuit
Author :
Barras, David ; Ellinger, Frank ; Jäckel, Heinz ; Hirt, Walter
Author_Institution :
Electron. Lab., Swiss Fed. Inst. of Technol., Zurich, Switzerland
fDate :
5/1/2006 12:00:00 AM
Abstract :
A low-power fully integrated ultra-wideband (UWB) wavelet generator is presented. This UWB generator is intended for low-power and low-complexity UWB radio technology using the noncoherent energy collection approach. The wavelet generator is based on a cross-coupled inductance-capacitance (LC) oscillator. It can be directly driven by two digital signals, which can modulate the length, position, and phase of the output wavelet. An additional digital circuit improves the startup time of the oscillator so that the oscillator and output buffers can be switched off between each wavelet generation. The entire chip-including output buffers-uses a 0.18-μm CMOS technology. When operating at 10 megapulses per second (Mp/s) with a 1.2-GHz bandwidth wavelet, the generator provides a typical average output power of -20 dBm and consumes only 1.8 mW. The differential output signal is a multicycle waveform centered at 4.5 GHz.
Keywords :
MMIC; low-power electronics; microwave oscillators; signal generators; ultra wideband communication; 0.18 micron; 1.2 GHz; 1.8 mW; 4.5 GHz; UWB radio; cross-coupled inductance-capacitance oscillator; monolithic microwave integrated circuits; noncoherent energy collection; start-up circuit; ultra wideband wavelets generator; Bandwidth; CMOS technology; Digital circuits; Digital modulation; Integrated circuit technology; Oscillators; Phase modulation; Power generation; Switching circuits; Ultra wideband technology; Monolithic microwave integrated circuit (MMIC); oscillator; ultra-wideband (UWB); wavelet generator;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
DOI :
10.1109/TMTT.2006.873631