Title :
UWB waveform generator for digital CMOS radar
Author :
Bjorndal, Oystein ; Hamran, Svein-Erik ; Lande, Tor Sverre
Author_Institution :
Norwegian Defence Res. Establ. (FFI), Kjeller, Norway
Abstract :
A digital asynchronous waveform generator is presented and analysed for FMCW chirp generation. A novel delay line based sequencer is proposed, where the maximum output frequency scales with the gate delay of the process. At 2.9 GHz, OdBm is measured over a 50 Ω load, drawing 8 mA from a single 1.2 V supply. System simulation show the flexible generator can be programmed for either large bandwidth (resolution) or improved dynamic range. With a sweep to 2.9 GHz a free space resolution of 10 cm is feasible.
Keywords :
CMOS digital integrated circuits; CW radar; FM radar; delay lines; ultra wideband technology; waveform generators; FMCW chirp generation; UWB waveform generator; complementary metal oxide semiconductor; current 8 mA; delay line based sequencer; digital CMOS radar; digital asynchronous waveform generator; free space resolution; frequency 2.9 GHz; frequency scale; frequency-modulated continuous wave chirp generation; gate delay; ultra wideband waveform generator; voltage 1.2 V; Chirp; Delay lines; Harmonic analysis; Jitter; Radar; Signal generators; Time-frequency analysis;
Conference_Titel :
Circuits and Systems (ISCAS), 2015 IEEE International Symposium on
Conference_Location :
Lisbon
DOI :
10.1109/ISCAS.2015.7168932
