A Broadband Signal Detection Method Based on Logarithmic Peak Detection

Abstract

The invention discloses a wideband signal detection method based on a logarithmic peak detection method, and can achieve simultaneous reception of wideband electric field sensing signals. The wideband signal detection method comprises a first step of amplifying electric field sensing signals by using a wideband low-noise amplifier so as to fall within a detection range of a wideband logarithmic peak detector; a second step of converting, by using the wideband logarithmic peak detector, the amplified electric field sensing signals into output voltage retaining only electric field sensing signal peak information; and a third step of converting the output voltage into digital signals by using an AD sampling circuit, and transmitting to a computer for processing. The invention can achieve detection and processing of the wideband electric field sensing signals, with high detection efficiency, without requiring known field frequency to be detected or repeated parameter adjustment; and meanwhile, the circuit structure is simple, the detection cost is saved, and the whole electric field sensing system is simplified.

Description

Technical field [0001] The invention belongs to the field of electric field sensing and radio frequency circuit design, and is specifically a wideband signal detection method based on a logarithmic peak detection method. Background technique [0002] With the rapid development of communication technology, the complexity of electronic equipment has become greater and greater, but the survivability has also become worse. The changeable electromagnetic environment will directly affect the normal operation of systems and equipment, which makes the real-time monitoring of electric fields change. It is especially important. The traditional electric field measurement method uses various antennas, and the system often contains metal structures, which will interfere with the electric field to be measured. At the same time, it is difficult for a single antenna to meet the wide-band measurement requirements, so multiple antennas are often used in the measurement. , Which greatly increases ...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the disadvantages of low efficiency, high cost and complex system in the existing electric field sensing signal processing method, the present invention proposes a broadband signal detection method based on the logarithmic peak detection method, based on a broadband low-noise amplifier, and a broadband logarithmic peak detection method The device and the AD sampling circuit are realized in cooperation with three parts; the specific steps are as follows:

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