Highly Tunable Triangular Wave UWB Baseband Pulse Generator With Amplitude Stabilization in 40-nm CMOS

摘要

This brief introduces a highly configurable ultrawideband triangular wave baseband pulse generator designed in 40-nm complementary metal-oxide-semiconductor technology. The baseband pulse width is adjustable between 660 ps and 3.8 ns. An extra amplitude compensation loop is implemented to prevent amplitude changes when the pulse width varies. The amplitude variations are limited to 13% compared with the maximum amplitude over the entire pulse width range. The amplitude compensation loop allows a pulse amplitude tuning range between 280 and 640 mV, whereas the pulse width only varies 80 ps over this entire range. The pulse generator has a maximum simulated signal-to-noise ratio of 59 dB and a measured maximum power consumption of 6.2 pJ/pulse from a 0.9-V power supply and a 100-MHz pulse repetition frequency.