Patent ID: 9240754
Filing Date: 2016-01-19
CPC Classification: H03B,H03L

Claim Text:
1. An oscillator comprising: an oscillating circuit for generating an output signal having an output signal frequency, the oscillating circuit comprising an inductive element and a capacitive element, the capacitive element having a variable capacitance for coarsely tuning the output signal frequency; a first pair of cross coupled transistors, a first transistor of the first pair being coupled to a first terminal of the inductive element and a second transistor of the first pair being coupled to the second terminal of the inductive element; a second pair of cross coupled transistors, a particular transistor of the second pair of transistors being coupled to said first terminal and said first transistor, and the other transistor of the second pair being coupled to the second terminal and the second transistor; and a current supply for supplying current to the oscillating circuit, the current supply being variable for finely tuning the output signal frequency, the current supply being coupled to the first pair of cross coupled transistors, the fine tuning of the output signal frequency being dependent on the current supplied to the first and second pairs of cross coupled transistors.