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BTF Testing Lab Radio frequency (RF) introduction

RF

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  • BTF Testing Lab Radio frequency (RF) introduction
  • BTF Testing Lab Radio frequency (RF) introduction

BTF Testing Lab Radio frequency (RF) introduction

short description:

Radio frequency is referred to as RF, radio frequency is RF current, it is a kind of high-frequency AC change electromagnetic wave for short. BTF Testing Lab has a complete radio frequency laboratory. Alternating current that changes less than 1000 times per second is called low-frequency current, and frequency current that is greater than 10,000 times is called high-frequency current, and radio frequency is such a high-frequency current. Cable television system is using the radio frequency transmission mode.

In electronics, an electric current flows through a conductor and a magnetic field forms around it. Alternating current passes through a conductor, and an alternating electromagnetic field is formed around the conductor, called an electromagnetic wave.


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When the electromagnetic wave frequency is lower than 100kHz, the electromagnetic wave will be absorbed by the surface and cannot form an effective transmission, but when the electromagnetic wave frequency is higher than 100kHz, the electromagnetic wave can spread in the air and be reflected by the ionosphere at the outer edge of the atmosphere, forming a long-distance transmission capability, we call the high-frequency electromagnetic wave with long-distance transmission capability radio frequency, English abbreviation: RF

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