Circuit for detecting radio frequency power
A detection circuit, radio frequency power technology, applied in the direction of measuring electric power, measuring electric variables, electric vehicles, etc., can solve the problems of increasing the area of printed circuit boards, small detection range, and signals detected by power detectors, so as to save area and eliminate Limitation of forward voltage, effect of increased range
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[0010] The circuit diagram of the radio frequency power detection circuit of the present invention is as figure 2 As shown, resistors R1, R2, R3 and a first diode are serially connected in series from the power supply terminal VCC to the ground, the cathode of the first diode is grounded, and the signal input terminal RF IN The capacitor C1 is connected to the node between the resistors R2 and R3, and this node is also connected to the base of the transistor Q2, and the collector of the transistor Q2 is connected to the node between the resistors R1 and R2, and the transistor Q2 A second diode and a resistor R4 are serially connected in series between the emitter of the transistor Q2 and the resistor R4, the cathode of the second diode is connected to the resistor R4, and the emitter of the triode Q2 is connected to the signal output terminal V OUT Resistors R5 and R7 are connected in series in sequence, a capacitor C2 is connected between the node between the resistors R7 an...
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