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參數(shù)資料
| 型號： | RMDA20420 |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 衰減器 |
| 英文描述： | 20-42 GHz Broadband Driver Amplifier |
| 中文描述： | 20000 MHz - 42000 MHz RF/MICROWAVE WIDE BAND MEDIUM POWER AMPLIFIER |
| 封裝： | 1.72 X 0.76 MM, DIE |
| 文件頁數(shù)： | 9/12頁 |
| 文件大?。?/td> | 819K |
| 代理商： | RMDA20420 |
2004 Fairchild Semiconductor Corporation
RMDA20420 Rev. D
R
Figure 6. RMDA20420 Configured as Doubler
For each input frequency and input power level, Vg1 was adjusted to peak the second harmonic. Small changes in Vg2 and
Vd2 at this point help in suppressing odd harmonics. Figure 7 shows the doubler performance over the 20 to 42GHz band
for a fixed input power level of +12dBm. The graph shows doubled frequencies with output power levels greater than
+16dBm over the 20-42GHz band. The graph also shows the increasing power level of the fundamental at the higher end
of the band since the fundamental frequency approaches the lower band edge of the amplifier passband. Based on these
measurements the RMDA20420 can be used a doubler to give desired frequencies anywhere in the 20-42GHz band with a
conversion gain up to 8dB and second harmonic power levels up to 20dBm.
Figure 7. Measured Doubler Performance
Vg2
Vd2
Vd1
Vg1
RF IN
RF OUT
Vd1
Vg1
Vg2 alt
Vd2
Vd3
Vd4
Vg4
Vg3
Vg2
2x Fo
1x Fo
0
-10
-20
-30
10
20
30
20
22
24
26
28
30
32
34
36
38
40
42
Second Harmonic Frequency (GHz)
P
Gain=0
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