3 5解:Q
11
2126-12
0C0R2 3.14 1.5 10 100 10 5
L0
11
112 μH 226-12 0C02 3.14 1.5 10100 10
Vom1 10-3
Iom 0.2 mA
R5
VLom VCom Q0VSm 212 1 10-3 212 mV
11
3 6解:L 2 253 μH
0C2 3.14 1062 100 10 12
Q0
VC10 100VS0.1
C CX11
2 100 pF CX 200pF
C CX 0L2 3.14 1062 253 10 6
2 3.14 106 253 10 62 3.14 106 253 10 6
RX 47.7 Ω
QQ02.0.1100
0L 0L
11
47.7 j 47.7 j796 Ω 6 12
0CX2 3.14 10 200 1011
3 7解:L 2 20.2 μH
ω0C2 3.14 5 106 50 10 12
ZX RX j
f05 106100
Q0
2Δf0.7150 1033
2Δf1002 5.5 5 10620ξ Q0 6
f035 103
2 2 f0.7,则Q 因2Δf0.7,所以应并上21kΩ电阻。 0 0.5Q0,故R 0.5R
2πf0CωC
3 8证明:4πΔf0.7C 0 g
f02Δf0.7Q
C C0 C1 5 20 20 20 18.3 pF 3 9解:C Ci 2
C2 C0 C120 20 20
f0
11 41.6 MHz 6 12
2πLC2 3.140.8 10 18.3 10
L
100 C12
0.8 10 6
20.9 kΩ
20 20 10 12
2
2
RP Q0
C2 C0 C1 20 20 20
R RiRP R 1020.9 5 5.88 kΩ 0
C20 1 R 5.88 103
QL 28.26 6
ω0L2 3.14 41.6 10 0.8 102Δf0.7
f041.6 106 1.48 MHz QL28.2