Marki amplified quadruplers come in two different configurations. One is an amplifier followed by a quadrupler and another amplifier (AQA) and the other is a doubler followed by an amplifier followed by a doubler (DAD). The former offers higher output levels and better suppression of the fundamental while the latter offers better suppressions of the higher order harmonics. As with all multipliers and mixers, it is important to drive amplified quadruplers with the recommended drive level.
Parameter INPUT OUTPUT Min Typ Max
  (GHz) (GHz)      
Input (dBm)          
F(in) 1.9-3.3   +2   +5
Output Converted Power (dBm)          
4F(out)   8.5-12.0 +10 +13  
4F(out)   7.6-13.2 +8 +12  
Suppressions (dBc)          
F(in) Fundamental   1.9-3.3   20  
2F(out) Second Harmonic   3.8-6.6   10  
3F(out) Third Harmonic   5.7-9.9   10  
Bias Requirements (mA) 1          
+5 Volts DC       150 200
1It is recommended that the negative bias be applied before or concurrent with the positive bias.