Title :
A 3.2-to-7.3GHz Quadrature Oscillator with Magnetic Tuning
Author :
Cusmai, Giuseppe ; Repossi, Matteo ; Albasini, Guido ; Svelto, Francesco
Author_Institution :
Universita di Pavia
Abstract :
A quadrature oscillator employs a transformer-capacitor network as an energy tank. Frequency tuning is done by varying the transformer magnetic field via the ratio of currents in the two windings. Realized prototypes have a 3.2 to 7.3GHz frequency tuning range, a phase noise FOM of 176.5dB at 3.2GHz, 170.5dB at 6.4GHz, and 164dB at 7GHz, all calculated at 10MHz offset, and a phase error of <1.5deg
Keywords :
capacitors; circuit tuning; magnetic fields; microwave oscillators; phase noise; transformers; 10 MHz; 3.2 to 7.3 GHz; energy tank; frequency tuning; magnetic tuning; phase noise; quadrature oscillator; transformer magnetic field; transformer-capacitor network; Bonding; CMOS process; Frequency; Inductance; Phase noise; Q factor; Resonance; Spirals; Tuning; Voltage-controlled oscillators;
Conference_Titel :
Solid-State Circuits Conference, 2007. ISSCC 2007. Digest of Technical Papers. IEEE International
Conference_Location :
San Francisco, CA
Print_ISBN :
1-4244-0853-9
Electronic_ISBN :
0193-6530
DOI :
10.1109/ISSCC.2007.373603
