Assignment 3_Solution - Assignment 3, Oscillator Design 4...

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Assignment 3, Oscillator Design 4 The transistor LAE2001R is unconditionally stable at 1.9GHz in both the common emitter and common base configuration. Connecting a 1pF between the base and the collector makes the transistor potentially unstable and the resultant scattering parameters are, - - - = o o o o s s s s 87 112 . 0 117 259 . 1 74 531 . 0 37 473 . 0 22 21 12 11 Design an oscillator using this transistor at 1.9GHz. In your design you are only allowed to use transmission lines, your resonator must be placed at the collector and the signal energy extracted from the base. In your design you must also consider how bias can be applied giving a sketch for illustration. Solution o 2 . 7 696 . 0 - = 933 . 0 = k o L C 5 . 10 603 . 0 - = 416 . 1 =
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Assignment 3_Solution - Assignment 3, Oscillator Design 4...

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