Oscillators – With particular source of power or bias voltage
Reexamination Certificate
2005-09-29
2010-06-01
Pascal, Robert (Department: 2817)
Oscillators
With particular source of power or bias voltage
C331S1170FE, C331S167000
Reexamination Certificate
active
07728687
ABSTRACT:
An oscillation circuit and the method for operating the same. The circuit includes (a) an LC oscillator including an inductor and a variable capacitor; (b) first and second differentially-coupled transistors (i) electrically coupled to the LC oscillator and (ii) configured to provide negative resistance to the LC oscillator; and (c) a first current-injecting circuit (i) electrically coupled to the first differentially-coupled transistor and (ii) configured to inject a first additional electric current into the first differentially-coupled transistor so as to cause the first differentially-coupled transistor to create a first additional negative resistance to the LC oscillator; and (d) a second current-injecting circuit (i) electrically coupled to the second differentially-coupled transistor and (ii) configured to inject a second additional electric current into the second differentially-coupled transistor so as to cause the second differentially-coupled transistor to create a second additional negative resistance to the LC oscillator.
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Kelkar Ram
Malladi Anjali R.
Goodley James E
Harding Riyon
International Business Machines - Corporation
Pascal Robert
Schmeiser Olsen & Watts
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