资料介绍
RF资料 Sheet
1 of 2
Derivation of Colpitts feedback capacitor values.
Iin
C1
Vin
RL
Zin
C2
Simplified schematic diagram showing the reflection amplifier part of the Colpitts
oscillator. The capacitor network of C1 and C2 would provide positive feedback from
the emitter to base.
Vin = Iin (XC 1 + XC 2 ) - Ib (XC 1 - βXC 2 ) - (1)
0 = - Iin (XC 1 ) + Ib (XC 1 + hie ) - (2)
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