Title :
Standing wave oscillators utilizing wave-adaptive tapered transmission lines
Author :
Andress, William ; Ham, Donhee
Author_Institution :
Harvard Univ., Cambridge, MA, USA
Abstract :
This paper introduces a novel standing wave oscillator (SWO) utilizing a tapered transmission line adapted to the position-dependent amplitudes of standing waves. The tapered line fully exploits the core property of standing waves to enhance Q and lower phase noise, demonstrating the benefits of wave-based oscillators. Measurements confirm the advantages of the proposed technique. The phase noise of a fully-integrated MOS SWO with the tapered line is about 8 dB superior to that of a uniform-line SWO over a wide range of offset frequencies, where the oscillation frequencies are around 15 GHz.
Keywords :
CMOS integrated circuits; phase locked oscillators; phase noise; 15 GHz; CMOS integrated circuits; fully-integrated CMOS SWO; phase noise; position-dependent amplitudes; standing wave oscillators; standing waves; wave-adaptive tapered transmission lines; wave-based oscillators; Circuits; Coplanar transmission lines; Frequency; Inverters; Oscillators; Phase noise; Stripline; Transmission lines; Vehicles; Voltage;
Conference_Titel :
VLSI Circuits, 2004. Digest of Technical Papers. 2004 Symposium on
Print_ISBN :
0-7803-8287-0
DOI :
10.1109/VLSIC.2004.1346499
