| 摘要 |
FIELD: radio engineering, namely, amplifiers of intermediate frequency, possible use as preliminary amplifier of intermediate frequency of radio-receiving devices of radio-electronic equipment, may be used, in particular, in frequency converters. ^ SUBSTANCE: amplifier of intermediate frequency contains first, second, third, fourth resistors (4,5,10,11), first and second capacitors (6,7), first and second transistors (8,9). ^ EFFECT: ensured independency of value of input resistance of intermediate frequency amplifier from load resistance value and from influence of destabilizing factors, expanded working frequencies spectrum, increased dynamic range with simultaneous realization of low amplifier noise coefficient. ^ 2 dwg |
