A Novel CMOS High-Power Terahertz VCO Based on Coupled Oscillators Theory and Im

Abstract

We introduce a novel frequency tuning method for high-power terahertz sources in CMOS. In this technique, mul- tiple core oscillators are coupled to generate, combine, and deliver t h e i rh a r m o n i cp o w e rt ot h eo u t p ut node without using varactors. By exploiting the theory of non linear dynamics, we control the coupling between the cores to set their phase shift and frequency . Using this method, two high-power terahertz VCOs are fabricated i na6 5n mL Pb u l kC M O Sp r o c e s s .