I. Introduction
Yesterday, I used the spectrometer to test the ability to suppress the high -frequency signal. Today, comparing it, a 10 -micro -heang color ring inductance has the ability to suppress the high -frequency signal under the same circumstances.
Use the trace function of the spectrometer to output a 0dbm radio frequency signal. After measuring the decaying characteristics of the corresponding signal after the magnetic beads and inductors are measured.

2. Measurement results
First, the power of the spectrum output of the tractor output by using the wires to connect the spectrometer is 0dbm.
Next, use the Normalize function to normalize the receiving spectrum, and the ingenuity 0dB. In this way, you can directly read the attenuation characteristics of the inductance and magnetic beads on different frequencies.

▲The spectrum numerical curve after the normalization

First, measure the attenuation characteristics of porous magnets. This measurement result is basically the same as yesterday's measurement results. At about 200MHz, high frequency attenuation reached 20DB. After that, as the frequency increases, the attenuation ability weakens. At about 1GHz, attenuation is only 5DB. Replace the color ring inductance of 10 micro -Heng. This is the result of measurement. Within 30MHz, as the frequency increases, the high frequency attenuation decreases, and then the attenuation gradually weakens. When it reaches 115MHz, the attenuation is less than 10dB. Next, at 285MHz, the high frequency attenuation capacity reached the extreme value. Subsequently, as the frequency increased, attenuation weakened, and after 1.1GHz, there was almost no decay characteristics.

▲The decaying characteristics corresponding to the color ring inductance (10UH)

This is the ability to suppress the high -frequency signal of porous magnets and color rings for high -frequency signals. In some frequency bands, the high frequency of the color ring inductance is stronger. However, in other frequency bands, porous magnetic beads have greater ability to suppress high -frequency signals. After some special frequency points and more than 1GHz, the ability of magnetic beads to suppress high -frequency signals is better than inductance.

▲Compared with the characteristics of magnetic beads and guide rods for high -frequency attenuation

3. Summary

This article tested the porous magnetic beads and color ring inductances of the high -frequency signal through the spectrometer. Overall, it is better to use porous magnetic beads to suppress high -frequency signals as a whole.

Article Source: 21IC Electronic Network Public Account