Title :
A PPM Gaussian pulse generator for ultra-wideband communications
Author :
Bagga, Sumit ; De Vita, Giuseppe ; Haddad, Sandro A P ; Serdij, Wouter A. ; Long, John R.
Author_Institution :
Fac. of Electr. Eng., Math. & Comput. Sci., Delft Univ. of Technol., Netherlands
Abstract :
A Gaussian pulse generator incorporating a pulse position modulator for use in an ultra-wideband or impulse radio system is described. The pulse generator is preceded by a programmable pulse-position modulator and consists of a cascade of complex first-order systems, which, in turn, are made up of differential pairs employing partial positive feedback. The resulting PPM Gaussian pulse generator has been designed to be implemented in AMS 0.35μm CMOS IC technology. Simulations predict the correct operation of the circuit for supply voltages of 3.3Vand a power consumption of 95mW. The output monocycle indeed approximates a Gaussian monocycle very well and has a pulse duration of about 230ps. Proper modulation of the pulse in time is confirmed.
Keywords :
CMOS analogue integrated circuits; Gaussian processes; broadband networks; circuit simulation; programmable circuits; pulse generators; pulse position modulation; radio networks; 0.35 microns; 230 ps; 3.3 V; 95 mW; AMS; CMOS IC; Gaussian monocycle; Gaussian pulse generator; PPM; analog integrated circuits; complex first-order systems; differential pairs; impulse radio system; partial positive feedback; programmable pulse-position modulator; transceiver; ultra-wideband communications; ultra-wideband radio; CMOS integrated circuits; CMOS technology; Circuit simulation; Feedback; Modulation coding; Predictive models; Pulse generation; Pulse modulation; Ultra wideband technology; Voltage;
Conference_Titel :
Circuits and Systems, 2004. ISCAS '04. Proceedings of the 2004 International Symposium on
Print_ISBN :
0-7803-8251-X
DOI :
10.1109/ISCAS.2004.1328143
