Adaptive power detection system and detection method

Abstract

The invention discloses an adaptive power detection system which includes an envelope detector, an adaptive period detection module, a high-speed analog-to-digital converter and an arithmetic unit. The method includes the following steps: detecting a periodic voltage envelope signal from a modulation signal coupled from a coupling port; measuring the period of the voltage envelope signal, and transmitting the period to the arithmetic unit; converting the voltage envelope signal into an envelope digital signal and transmitting the envelope digital signal to the arithmetic unit; and integrating and averaging the envelope digital signal according to the period of the voltage envelope signal to obtain the average power corresponding to a modulated signal. The adaptive power detection system and the method can accurately detect the average power of a modulated signal with unknown frequency.

Description

technical field [0001] The invention relates to the radio field, in particular to an adaptive power detection system and a detection method. Background technique [0002] In systems such as wireless communication and sensor interface with a large dynamic range of input signals, especially in wireless communication systems, due to channel attenuation and multipath effects, as well as the uncertainty of the distance between the receiver and the transmitter, the receiving The power of the signal received by the machine will fluctuate in a wide range, so it is often necessary to detect the average power of the modulated signal; at present, the power detection technology in the prior art can only detect the average power of the modulated signal with a known frequency detection, but for the modulated signal with unknown frequency, its average power cannot be accurately detected. Contents of the invention [0003] In view of the above-mentioned shortcomings in the prior art, the...

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Problems solved by technology

[0002] In systems such as wireless communication and sensor interface with a large dynamic range of input signals, especially in wireless communication systems, due to channel attenuation and multipath effects, as well as the uncertainty of the distance between the receiver and the transmitter, the receiving The power of the signal received by the machine will fluctuate in a wide range, so it is often necessary to detect the average power of the modulated signal; at present, the power detection technology in the prior art can only detect the average power of the modulated signal with a known frequency detection, but for the modulated signal with unknown frequency, its average power cannot be accurately detected

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