Series-resonance oscillator

A wireless communication device comprising:

• an oscillator circuit comprising:
• a first tank circuit comprising an inductive element and a capacitive element coupled in series between a voltage rail and a first drive node and comprising a first tank output for outputting a voltage present at a node topologically located between the inductive element and the capacitive element in series;
• and
• a feedback stage coupled to the first tank output of the first tank circuit and to the first drive node;
• wherein the feedback stage is arranged to generate, responsive to a first oscillating tank voltage present at the first tank output, a first oscillating drive signal at the first drive node in-phase with an oscillating tank current flowing in the inductive element and the capacitive element, thereby causing the oscillator circuit to oscillate in a series resonance mode of the inductive element and the capacitive element.