Patent ID: 11909361
Assignee: NANJING MILLIWAY MICROELECTRONICS TECHNOLOGY CO., LTD.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 4:
5. The broadband logarithmic detector with high dynamic range of claim 1, wherein the N stages of clipper amplifier have the same circuit structure, the circuit structure of the clipper amplifier comprises a first transistor M1 and a second transistor M2, the base of the first transistor M1 and the base of the second transistor M2 both serve as the input of the clipper amplifier, the phase of the base input signal for the first transistor M1 is different from the phase of the base input signal for the second transistor M2 by 180 degrees, the emitter of the first transistor M1 is grounded through the second current source Ib2, the emitter of the second transistor M2 is grounded through the fourth current source Ib4, the collector of the first transistor M1 is connected respectively to the base of the third transistor M3, the emitter of the fifth transistor M5 and the base of the seventh transistor M7, the collector of the second transistor M2 is connected respectively to the emitter of the sixth transistor M6, the base of the eighth transistor M8 and the base of the fourth transistor M4, the base of the fifth transistor M5 is connected respectively to the collector of the third transistor M3 and one end of the first resistor R1, the base of the sixth transistor M6 is connected respectively to the collector of the fourth transistor M4 and one end of the second resistor R2, the other end of the first resistor R1, the other end of the second resistor R2, the collector of the fifth transistor M5, the collector of the sixth transistor M6, the collector of the seventh transistor M7 and the collector of the eighth transistor M8 are all input with the first supply voltage VCC1, the emitter of the third transistor M3 is connected to the emitter of the fourth transistor M4, the emitter of the third transistor M3 is grounded through the third current source Ib3, the emitter of the seventh transistor M7 is grounded through the first current source Ib1, the emitter of the eighth transistor M8 is grounded through the fifth current source Ib5, and the emitter of the seventh transistor M7 and the emitter of the eighth transistor M8 both serve as the output of the clipper amplifier.