What is an "ultrahigh range" and what is the decryption of the microwave?

The decoding of the microwave is "ultrahigh frequencies". Many will think that this is something complicated from the domain of abstruse physics and mathematics, and that this does not concern them. However, the situation is quite different. Microwave devices have long and densely entered our life, and they can be found everywhere. But what is it?

Ultra-high frequency range

The decoding of the microwave is the ultrahigh frequencies of electromagnetic radiation that are located in the spectrum between the infrared far-field frequency and ultra-high frequencies. The wavelength of this range is from thirty centimeters to one millimeter. That is why the microwave is sometimes called centimeter and decimeter waves. In the foreign technical literature the decoding of the microwave is a microwave range. It means that the wavelength is very small in comparison with the waves of radio broadcasting, which are of the order of several hundred meters.

Microwave properties

In its length, this type of waves is intermediate between the emission of light and radio signals, and therefore it possesses the properties of both types. For example, like light, these waves propagate along a straight trajectory and overlap with almost all more or less solid objects. Similarly to light radiation, the microwave can be focused, reflected, spread in the form of rays. Despite the fact that the decoding of the microwave frequency focuses on the "over" -high band, many antennas and radar devices are a slightly enlarged version of mirrors, lenses and other optical elements.

Generation

Since the radiation of ultrahigh frequencies is similar to radio waves, it is generated by similar methods. The interpretation of the microwave provides for the application of the classical theory of radio waves to it, but due to the increased range, it is possible to increase the efficiency of its use. For example, only one beam can "carry" up to a thousand telephone conversations at once. The similarities of microwave waves and light, expressed in an increased density of portable information, turned out to be useful for radar technology.

Application of ultrahigh frequencies in radar

Waves of centimeter and decimeter bands became a subject of interest even during the Second World War. At that time, there was a need for an effective and innovative means of detection. Then, microwave waves were investigated for their application in radar. The essence is that intense and short pulses are triggered into space, and then some of these rays are recorded after returning from the desired remote objects.

Application of ultrahigh frequencies in the field of communication

As we have already said, the decoding of microwave frequencies is ultrahigh frequencies. Engineers and technicians decided to apply these radio waves in communication. In all countries, commercial lines of communication based on the transmission of high-range waves are actively used. Such radio signals do not follow the curve of the earth's surface, but in a straight line, through relay communication stations located at altitudes with intervals of about fifty kilometers.

Transmission does not require large power consumption, since microwave waves allow narrow-band reception and transmission, and at stations are amplified by electronic amplifiers before retransmission. The system of antennas, towers, transmitters and receivers seems expensive, but all this pays off the information capacity of such communication channels.

Application of ultrahigh frequencies in the field of satellite communication

The radio tower system for relaying microwave signals over long distances can exist only on land. For intercontinental negotiations, use artificial satellites that are located on the geostationary orbit of the Earth and perform the function of repeaters. Each satellite provides several thousand high-quality communication channels to its customers for the transmission of television and telephone signals simultaneously.

Heat treatment of products

The first attempts to use ultra-high frequencies for food processing received positive, and even enthusiastic, reviews. Microwave ovens are used today both at home and in the large food industry. The energy generated by the electronic high-power lamps is concentrated in an insignificant amount, which makes it possible to thermally treat the products cleanly, compactly and noiselessly.

Built-in microwave oven has become most widespread in the household, and it can be found in many kitchens. Also, such household devices are used in all places where fast heating and preparation of dishes is necessary. A microwave oven with a grill, for example, is an absolutely necessary element for any self-respecting restaurant.

Main sources of radiation

Progress in the use of microwave waves is associated with such electrovacuum devices as the klystron and magnetron, which are capable of generating a huge amount of high-frequency energy. The use of a magnetron is based on the principle of a cavity resonator, the walls of which are inductance, and the space between walls is the capacity of a resonant circuit. The dimensions of this element are chosen according to the necessary resonant ultrahigh frequency, which would correspond to the required ratios between capacitance and inductance.

So, the decoding of the microwave is ultrahigh frequencies. The size of the generator directly affects the power of such emissions. Small-size magnetrons for high frequencies are so small that their power can not reach the required values. The problem also stands with the use of heavy magnets. In the klystron it is partly solved, since in this electrovacuum device no external field is needed.