High dynamic range radio frequency signal power detection circuit

The invention belongs to the technical field of integrated circuit design, in particular a radio frequency signal power detection circuit. The radio frequency signal power detection circuit comprises a rectifier, a gain-variable transimpedance amplifier, a level adjusting circuit, a high-precision comparator, a counter and automatic gain control circuit, an RC calibrating circuit and a clock generation and control circuit. The power detection circuit realizes the function of detecting the frequency signal power through voltage detection and programming adjustment and control of the dynamic range of the detection circuit according to the input signal power. In order to realize the high precision and high dynamic range, the RC charging and discharging circuit is provided with the special RC calibrating circuit. The clock generation circuit is used for controlling the comparator, the RC charging and discharging circuit, the RC calibrating circuit and the counter and automatic gain control circuit to work. With the RC charging and discharging circuit, the RC calibrating circuit and the automatic gain control circuit additionally arranged in the power detection circuit, the invention realizes the high dynamic range and high-precision logarithmic-to-linear power detection for the radio frequency signal.