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A 300-GHz Fundamental Oscillator in 65-nm CMOS Technology

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1 Author(s)
Razavi, B. ; Electr. Eng. Dept., Univ. of California, Los Angeles, CA, USA

Fundamental oscillators prove the existence of gain at high frequencies, revealing the speed limitations of other circuits in a given technology. This paper presents an oscillator topology that employs feedback from an output stage to the core, thus achieving a high speed. The behavior of the proposed oscillator is formulated and simulations are used to compare it with the conventional cross-coupled pair circuit. Three prototypes realized in 65-nm CMOS technology operate at 205 GHz, 240 GHz, and 300 GHz, each drawing 3.7 mW from a 0.8-V supply.

Published in:

Solid-State Circuits, IEEE Journal of  (Volume:46 ,  Issue: 4 )