A Low Power, Startup Ensured and Constant Amplitude Class-C VCO in 0.18 mu m CMOS
2011 (English)In: IEEE Microwave and Wireless Components Letters, ISSN 1531-1309, E-ISSN 1558-1764, Vol. 21, no 8, 427-429 p.Article in journal (Refereed) Published
A low power and robust class-C voltage-controlled oscillator (VCO) is presented in this letter. It features 1) an automatic startup loop to achieve the optimal point and address the inherent risk of startup failure and 2) a digital amplitude control loop to stabilize amplitude and enhance the PVT ( process, voltage and temperature) tolerance. The design is implemented in a 0.18 mu m CMOS process. Measurement demonstrates the VCO has a 20% tuning range and phase noise of -123.0 dBc/Hz at 1 MHz offset from a 3.1 GHz carrier while consuming 1.57-mW power from a 1 V supply, yielding a Figure-of-Merit (FoM) of 191.1. While operating under the minimum power of 560 mu W, it produces -111.3 dBc/Hz phase noise at 1 MHz offset from a 3.1 GHz carrier showing a 183.8 FoM.
Place, publisher, year, edition, pages
2011. Vol. 21, no 8, 427-429 p.
Class-C, current shaping, phase noise, pulse wave, startup, voltage controlled oscillator (VCO)
Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:kth:diva-38979DOI: 10.1109/LMWC.2011.2160620ISI: 000293754300011ScopusID: 2-s2.0-80051788038OAI: oai:DiVA.org:kth-38979DiVA: diva2:438774
FunderICT - The Next Generation