| 摘要 |
FIELD: physics; radio. ^ SUBSTANCE: invention relates to radio engineering and communication and can be used in automatic gain control devices, phase detectors and modulators, as well as phase-locked loop systems and frequency multiplication systems or as an amplifier whose voltage transfer ratio depends on the control signal level. The analogue voltage multiplier has first and second input transistors of a first differential amplifier whose emitters are connected to the current input of the first differential amplifier, first and second input transistors of a second differential amplifier whose emitters are connected to the current input of the second differential amplifier, a third differential amplifier which has first and second inputs of a first multiplication channel, as well as first and second current outputs. The circuit includes first, second, third and fourth reference current sources, first and second potential matching circuits. ^ EFFECT: lower permissible voltage of bipolar supply and increased linearity of the multiplication channel. ^ 12 dwg |
