A method of reading multi-channel radio-frequency signal power value detection circuit and method

The present invention belongs to the field of mobile communication technologies, and particularly to a method of reading multiple RF signal power value method and detection circuit, the method comprising: reading the multi-channel signal power, an AD converter chip configuration, the AD converter input mouth and down the voltage delay; switching RF signals, the RF signal will be read into the power value detection circuit; an AD converter input port configured as a high impedance state, the RF power and the voltage charged up delay; read LTE pilot instantaneous power values. The present invention is a power error between the detection signals from various quarters out is small, the power applied at the output of the detector and hold circuit to ensure the accuracy and LTE user when there is no user sampled signal power, CPU facilitate sample readings. Using the residual power voltage holding cancellation techniques, to eliminate the influence of power all the way to the front of the detection voltage, so that the CPU can quickly read power voltage.