LINEAR POWER AMPLIFIER Russian patent published in 2000 - IPC

FIELD: radio electronics. SUBSTANCE: device has isolating capacitor 1, voltage divider, which has two resistors 3, 4, current-clipping resistor 9, first, second, third and fourth transistors 5, 11, 12, 15, third, fourth and fifth resistors 8, 13, 17. Collectors of first and second transistors are connected. Bases of second and third transistors 11, 12 are connected. Emitters of third transistor 12 are connected to first power supply line. Emitter of fourth transistor 15 is connected to collector of third transistor 12. collector of 4 12. collector of fourth transistor 15 is connected to fifth resistor 17 and is designed as device output. EFFECT: high linearity of heavy signal amplification without negative feedback circuit, decreased influence of transistor characteristics and temperature on device operation mode. 1 dwg