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1000MHz two-level broadband amplifier circuit diagram

2015-01-02 00:46  
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1000MHz two-level broadband amplifier circuit diagram
Wide-band amplifier composed of two BFT65 is packaged in one 50×50mm copper coated board. When noise factor is 0.5dB, the gain is 20dB; when crossover modulation attenuation is60dB, theoutput voltage is 130mV. The first level transistor T1 intergrated current is 8mA, the second level T2 collector current is 20mA. Main technical data: work voltage: UB=12Vwork current: Ib=28mAamplification factor ( when 1~1000MHz, RC=RL=60Ω) : VP>20dBnoise factor ( when 1~1000MHz, RC=RL=60Ω) : F<5dBstanding-wave ratio ( when 1~1000MHz, RC=RL=60Ω) : S<2output voltage ( when f=800MHz, RC=RL=60Ω) : Ua=130mV