Title :
A low power quadrature class D LC oscillator with 0.4V supply
Author :
Bispo, Andre ; Quendera, Filipe ; Madeira, Ricardo ; Oliveira, Joao P. ; Oliveira, Luis B.
Author_Institution :
Dept. de Eng. Electrotec., Univ. Nova de Lisboa, Lisbon, Portugal
Abstract :
Quadrature oscillators obtained by superharmonic coupling are known for its good phase noise performance. By making use of the presence of a second harmonic in the common-mode node of an Class D LC oscillator it is possible to design a 2.4 GHz quadrature oscillator using an inverting on-chip transformer. Simulation results in a circuit prototype in 130 nm CMOS technology show that it is possible to lower Vdd down to 0.4 V and power consumption to only 1.92 mW, achieving a FoM of 186.9 dBc/Hz, with a Phase Noise of -137.2 dBc/Hz at the 5 MHz offset, when operating at 2.4 GHz.
Keywords :
CMOS analogue integrated circuits; LC circuits; UHF integrated circuits; UHF oscillators; integrated circuit design; integrated circuit noise; invertors; low-power electronics; phase noise; transformers; CMOS technology; common-mode node; frequency 2.4 GHz; inverting on-chip transformer; low power quadrature class D LC oscillator; phase noise performance; power 1.92 mW; superharmonic coupling; voltage 0.4 V; Capacitors; Couplings; Harmonic analysis; Inductors; Phase noise; Receivers; Class D; LC Oscillator; Low-Voltage; Phase Noise; QVCO; Superharmonic Coupling;
Conference_Titel :
Mixed Design of Integrated Circuits & Systems (MIXDES), 2014 Proceedings of the 21st International Conference
Conference_Location :
Lublin
Print_ISBN :
978-83-63578-03-9
DOI :
10.1109/MIXDES.2014.6872169
