Source-injection parallel coupled LC-quadrature voltage...

Details Source-injection parallel coupled LC-quadrature voltage... Source-injection parallel coupled LC-quadrature voltage...

2007-04-03

2007-04-03

Pascal, Robert (Department: 2817)

Oscillators

Solid state active element oscillator

Transistors

C331S167000

Reexamination Certificate

active

10915850

ABSTRACT:
A quadrature VCO comprises: a first delay cell including a first differential VCO coupled between a power supply and a first current source; and first and second coupling transistors that each include a first terminal, a second terminal coupled to the power supply, and a third terminal, and that vary a current flowing from the second terminal to the third terminal according to quadrature-phase signals applied to the first terminal; and a second delay cell including a second differential VCO coupled between a power supply and a second current source; and third and fourth coupling transistors that each include a first terminal, a second terminal coupled to the power, and a third terminal, and that vary a current flowing from the second terminal to the third terminal according to in-phase signals applied to the first terminal.

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patent: 2001-111341 (2001-04-01), None
patent: 2002-208818 (2002-07-01), None

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