a) A 20 nH inductor has a seri tance of 15 2. Compute the eq parallel resistance, Rp, at 2 G b) Design a 2 GHz Colpitts oscil ing this inductor with a pow get of 2 mW and Yon = 1.

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13.56. (a) A 20 nH inductor has a series resis-
tance of 15 2. Compute the equivalent
parallel resistance, Rp, at 2 GHz.
(b) Design a 2 GHz Colpitts oscillator us-
ing this inductor with a power bud-
get of 2 mW and VDD = 1.5 V. For
simplicity, neglect the capacitances
of the bipolar transistor and assume
C1 =C2. Verify that the startup con-
dition is met.
Transcribed Image Text:13.56. (a) A 20 nH inductor has a series resis- tance of 15 2. Compute the equivalent parallel resistance, Rp, at 2 GHz. (b) Design a 2 GHz Colpitts oscillator us- ing this inductor with a power bud- get of 2 mW and VDD = 1.5 V. For simplicity, neglect the capacitances of the bipolar transistor and assume C1 =C2. Verify that the startup con- dition is met.
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