| 摘要 |
FIELD: radio engineering; oscilloscopes, signal generators; nanosecond and picosecond wavefront signal amplifiers. ^ SUBSTANCE: proposed broadband amplifier has cascaded high-pass input filter, first amplifier stage 2, and high-pass output filter 3; cascaded first resistor 7, second amplifier stage 5, and low-pass output filter 6; it also has low-pass input filter 4 with resistor 8 connected in parallel with its output; series-connected third resistor 9 and capacitor 10 inserted between output of amplifier stage 2 and that of low-pass filter 4. Output frequency-integrating circuit of high-pass filter 3 and low-pass filter 4 sums up amplified high- and low-frequency components of signal spectrum across load. Resistor 7 functions as isolating means. Resistor 9 and capacitor 10 afford frequency-dependent positive feedback functioning in interfacing band of low- and high-frequency amplification channels. ^ EFFECT: reduced distortions of gain-frequency and transient response due to dual-channel structure of broadband amplifier. ^ 1 cl, 6 dwg |
