A wideband high-frequency amplifier is shown, the circuit resistance and capacitance coupling of common emitter amplifier can be used to amplify high frequency signals. When th
e high-frequency signal Jl end to (input impedance 50 n), applied to the amplifier via a coupling capacitor cl VTI base and amplified by the c5 coupled together to VT2 base, the amplified signal from the collector output. Adjust the band No. capacitor band frequency characteristic can reach l dB, with number of high-frequency capacitor compensation capacitor.