Title :
A 11.5–22GHz dual-resonance transformer-coupled quadrature VCO
Author :
Saberi, Shadi ; Paramesh, Jeyanandh
Author_Institution :
Electr. & Comput. Eng. Dept., Carnegie Mellon Univ., Pittsburgh, PA, USA
Abstract :
A wide-tuning CMOS quadrature VCO (QVCO) is presented that uses a transformer-coupled resonator that enables quadrature coupling and facilitates alternative tuning methods including mutual inductance switching, magnetic tuning, and dual resonance mode switching besides the conventional capacitor tuning. The QVCO, fabricated in 130nm CMOS, can generate quadrature signals in the frequency range of 11.56-18.1 GHz and 18.9-22 GHz. The phase noise was measured -107dBc/Hz at 1MHz offset from 13.3GHz. The QVCO consumes 20-29mW and the output buffers consume 21mW from a 1.2V supply.
Keywords :
CMOS analogue integrated circuits; field effect MMIC; microwave oscillators; microwave resonators; phase noise; tuning; voltage-controlled oscillators; QVCO; capacitor tuning; dual resonance mode switching; dual-resonance transformer-coupled quadrature VCO; frequency 11.5 GHz to 22 GHz; magnetic tuning; mutual inductance switching; phase noise; power 20 mW to 29 mW; size 130 nm; transformer-coupled resonator; tuning methods; voltage 1.2 V; wide-tuning CMOS quadrature VCO; Magnetic resonance; Phase noise; Switches; Tuning; Varactors; CMOS integrated circuits; dual band; mutual coupling; phase noise; transformers; varactors; voltage-controlled oscillators;
Conference_Titel :
Radio Frequency Integrated Circuits Symposium (RFIC), 2011 IEEE
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-4244-8293-1
Electronic_ISBN :
1529-2517
DOI :
10.1109/RFIC.2011.5940680
