|
The RF circuit is a C-Class power amplifier . it is used in last stage
of transmitters . its maximum power output is about 1 Watt . the circuit can be used in 3 frequency range :
| frequency |
P-Out
|
C1
|
C2
|
C3
|
L1
|
L2
|
RFC
|
Q1
|
| 30 MHz |
30 dB
|
150 pf
|
15 pf
|
39 pf
|
1.5 uH
|
1.2 uH
|
33 uH
|
2N5109
|
| 100 MHz |
24 dB
|
68 pf
|
10 pf
|
None
|
0.82 uH
|
0.47 uH
|
10 uH
|
2N5109
|
| 200 MHz |
30 dB
|
33 pf
|
10 pf
|
None
|
0.47 uH
|
0.27 uH
|
5.6 uH
|
MRF227
|
The P-Out column at the above table has been calculated when P-In ( Input
Power ) is 13 dB .
Reference :
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|
Last
Updated : September 17, 2001