Why is radio frequency important?（1）

What is radio frequency? Why can't we do without radio frequency?

In the previous article, we have repeatedly elaborated on a topic-Maxwell and electromagnetic waves. Whether it is forwarding the excellent article "The Most Beautiful Formula: The Maxwell Equations You Can Understand (Differential)", "The Most Beautiful Formula: The Maxwell Equations You Can Understand (Integral)", "The Moment of Witnessing Miracles: How Introducing electromagnetic waves from Maxwell’s equations? ". Or is the little carpenter RF summarizing the meaning of Maxwell's equations by himself-"Maxwell's equations are so simple? ! ". We want to prove the significance of electromagnetic wave discovery. In fact, the significance is self-evident. All aspects of our modern life are inseparable from electromagnetic waves-mobile phones, wifi, smart homes, cars, etc., all have electromagnetic wave applications. However, when we "Retake the Electromagnetic Road-Discover Electromagnetic Waves", we discovered that it was actually because of people's dissatisfaction that today's wireless era was brought about.

The invention of electricity spurred the second industrial revolution. When we think of electricity, we first think of all kinds of wires, from high-voltage transmission lines to small wires on circuit boards. Wires are used to transmit electricity from one place to another. The basic method of office. But people are not satisfied with the application of electricity. It is like Tesla's electromagnetic charging, which allows electricity to be transmitted wirelessly, just like Hertz's electromagnetic wave experiment and later Marconi's transatlantic communication. People are eager to be able to be liberated from the wired, anytime, anywhere communication-the Internet of Everything. The radio frequency RF is the basic way of interconnecting everything.

The essence of radio frequency is electromagnetic radiation EMR, and electromagnetic radiation involves electric and magnetic fields. In fact, if there is a voltage, then there is an electric field (mathematically speaking, the spatial rate of change of the voltage and the electric field is proportional). If there is a current, Then there is a magnetic field (the intensity of the magnetic field is proportional to the magnitude of the current). In other words, as long as there are voltages and currents, there are electric and magnetic fields. Will the presence of electric and magnetic fields necessarily produce electromagnetic radiation? Can electromagnetic waves be generated? No, according to Maxwell's equations, we know that only changing electric and magnetic fields can generate electromagnetic waves, as shown in the figure below.

ZOMWAVE Technology specializes in design, development and manufacturing of RF(Radio Frequency) and Millimeter wave interconnect solutions, including Coaxial RF Cable Assemblies, RF Test Probe/ RF GS and GSG Test Probe, Coaxial RF adapters, Coaxial RF Attenuator, Coaxial RF Termination Load, RF Power Divider, Coaxial RF Switch, and Microwave Cable Assemblies and RF Coaxial Connectors (1.85mm(DC to 67GHz), 2.4mm, 2.92mm, 3.5mm, 1.0/2.3, SMA, BNC, BMA, N Type, HN,TNC, SMP, SMPM, MCX, MMCX, SSMCX and so on for plug/male and jack/female etc.).

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1. Why is radio frequency important?(2)

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