DESIGN OF A TUNABLE UWB DELAY-LINE WITH NANOSECONDEXCURSIONS USING CHIRPED ELECTROMAGNETIC BANDGAPSTRUCTURES

摘要

We present the design of an electronic ultra-wideband(UWB) tunable time-delay system suitable fornanosecond-scale delays. The system realizes much largerdelays than most existing UWB schemes by employingdispersive electromagnetic bandgap structures inmicrostrip or stripline technology, combined withconventional broadband mixers. System delay iscontrolled using a wideband voltage-controlled oscillator.We demonstrate in simulation a 1.6 ns delay excursion fora 4 GHz bandwidth signal.