If it’s not causing any trouble, you can ignore it. Any time-varying signal in any circuit will generate EMR, and this includes digital signals. However, it is extremely easy to generate electromagnetic radiation (EMR), and in fact you generate it even when you don’t want to. Once generated, this wave will travel outward from its source, careening day after day, at the speed of light, toward the depths of the unknown.ĭesigning an entire RF communication system is not easy. This mutual regeneration is manifested as a distinct entity, namely, an electromagnetic wave. A changing electric field generates a magnetic field, and a changing magnetic field generates an electric field. The key to this propagation phenomenon is the self-sustaining relationship between the electric and magnetic components of electromagnetic radiation. The electric and magnetic components of an electromagnetic wave are represented as perpendicular sinusoids. If we want a wave that will propagate out into the universe, we need changes in voltage and current. However, these fields would not propagate. The electric and magnetic fields are present even if the magnitude of the voltage or current is constant.
If you have electric current-such as the current passing through the impedance of an antenna-you have a magnetic field (the strength of the field is proportional to the magnitude of the current). If you have voltage-such as the voltage across the impedance of an antenna-you have an electric field (from a mathematical standpoint, electric field is proportional to the spatial rate of change of voltage). But you do need to have a basic idea of the mysterious energy being emitted from your device’s antenna.Īs the name implies, electromagnetic radiation involves both electric fields and magnetic fields. Fortunately, you don’t need that sort of expertise to successfully design and implement RF circuits. You could spend years studying the details of electromagnetism. With this in mind, we can ask ourselves the more relevant questions: Why is electromagnetic radiation the preferred method? Why are other types of wireless communication of such secondary importance? Before we answer these questions, let’s make sure we understand what electromagnetic radiation is.
Anything that can travel through a nonconductive material-mechanical motion, sound waves, heat-could be used as a (perhaps crude) means of converting electrical energy into information that does not rely on conductive interconnections.Ĭarefully manipulated sinusoidal voltage (or current) signals are the foundation of the modern wireless age. However, it’s important to recognize that electromagnetic radiation is not unique in its ability to extend electrical circuitry into the wireless domain. One of these is the use of electromagnetic radiation, which is the basis for RF communication.
There are various ways to incorporate “wireless” functionality into an electrical system.
From high-voltage transmission lines to tiny traces on a printed circuit board, wires are still the fundamental means of transferring electrical energy from one location to another.īut history has consistently demonstrated that human beings are rarely, if ever, satisfied with the fundamental way of doing things, and thus we should not be surprised to learn that the proliferation of electricity was followed by widespread efforts to free electrical functionality from the constraints of physical interconnections. When we think of electricity, we naturally think of wires.
This step-by-step training will guide you through everything from professional guidelines and equipment, safety precautions, treatment protocol best practices and more.Learn about electromagnetic radiation and why it is so useful for wireless communication.
Vacuum RF trainingĪre you interested in learning how to use Vacuum RF technology? The Cryoform Body Contouring Courses offers online courses for Ultrasonic Cavitation & Vacuum RF.
The procedure can be performed on its own but it is often combined with Ultrasonic Cavitation for effective fat reduction, contouring, and skin tightening. It’s safe and noninvasive with virtually no downtime. The Vacuum RF treatment is quick, taking only 20-30 minutes per area. What is the duration of a Vacuum RF treatment? The result is an increase in dermal volume, improved skin texture that makes it look more youthful and tighter. Radio Frequency energy penetrates between two poles of skin to create heating in connective tissue fibers, dermal collagen fibers, and fat cells. The device creates a vacuum around the target area, which lifts away cellulite from muscles and encourages more blood flow.