| 摘要 |
FIELD: radio engineering, communication.SUBSTANCE: invention relates to radio engineering and communication and can be used in devices for microwave filtering of radio signals in cellular communication systems, satellite television and radar. The selective microwave amplifier comprises an output transistor (1), the base of which is connected to an auxiliary voltage source (2), and the collector is connected through a first (3) resistor to a first (4) power supply bus, a voltage-to-current converter (5), matched with a second (6) power supply bus, the output (7) of which is connected to the emitter of output transistor (1), an input voltage source (8), connected to the input of the voltage-to-current converter (5), a first (9) and a second (10) balancing capacitor. The collector of the first (1) output transistor is connected via alternating current to the first (4) power supply bus through the series-connected first (9) and second (10) balancing capacitors, the common node of which is connected to the output of the device (11) and the output (7) of the voltage-to-current converter (5).EFFECT: high Q factor of the resonance frequency response of the amplifier and voltage gain at quasi-resonance frequency f.3 cl, 15 dwg |
