RF shielding brief

The attenuation of the radio frequency signal to the obstruction is one of the important reasons that affect the quality of the radio frequency signal. However, for the interference signal, the obstruction has a beneficial effect. This is shielding. In addition to reducing the amplitude of the interference signal, it also protects The external radiation of radio frequency signals, especially in power amplifier circuits, can significantly reduce the probability of self-excitation by adding shielding strips. Commonly used shielding materials are aluminum or copper. If the silver plating effect is better, the shielding structure design can achieve the shielding effect The key is to refer to the height, width and wavelength ratio of the working frequency band, and try to avoid the approximate size of half the wavelength. for reference only!