Interpretation of the microwave is "ultra-high frequencies".Many will think that this is something complex from the field 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 lives, and they can be found everywhere. But what is it?
Range of super high frequencies
Microwave Interpretation - Ultra High Frequencieselectromagnetic radiation, which are located in the spectrum between the frequency of the infrared far-field 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 foreign technical literature, microwave decoding is a microwave range. It is understood that the wavelength is very small in comparison with the waves of broadcasting, which are of the order of several hundred meters.
Microwave Properties
According to its length, this type of wave is intermediatebetween the emission of light and radio signals, so he has the properties of both types. For example, like light, these waves propagate in a straight path and overlap with almost all more or less solid objects. Similar to light radiation, microwave can be focused, reflected, spread in the form of rays. Despite the fact that the decoding of the microwave emphasizes the "over" -high range, many antennas and radar devices are a slightly larger version of mirrors, lenses and other optical elements.
Generation
Since the emission of microwave frequencies is similar toradio waves, it is generated by similar methods. The decoding of the microwave implies the application of the classical theory of radio waves to it, however, due to the increased range, it is possible to increase the efficiency of its use. For example, only one beam can "carry" immediately up to thousands of telephone conversations at a time. The similarities of microwave waves and light, expressed in increased density of the transmitted information, have proven to be useful for radar technology.
The use of ultra-high frequencies in radar
Centimeter and decimeter wavesbecame the subject of interest during the Second World War. At that time, there was a need for an effective and innovative detection tool. Then investigated microwave waves for their use in radar. The bottom line is that intense and short impulses are launched into space, and then some of these rays are recorded after returning from the desired distant objects.
The use of ultra-high frequencies in the field of communications
As we have said, the decoding of the microwave -ultra high frequency. Engineers and technicians decided to use these radio waves in communication. All countries actively use commercial lines of communication based on the transmission of high-range waves. Such radio signals go not along the curve of the earth's surface, but in a straight line, through relay stations of communication, located at altitudes with intervals of about fifty kilometers.
No need for high transferelectricity, as the microwave waves allow highly targeted reception and transmission, as well as at the stations amplified by electronic amplifiers before retransmitting. The system of antennas, towers, transmitters and receivers seems expensive, but it all pays off the information capacity of such communication channels.
The use of ultra-high frequencies in the field of satellite communications
Radio tower system for microwave retransmissionover long distances can exist only on land. For intercontinental negotiations, artificial satellites are used, which are in geostationary orbit of the Earth and perform the functions of repeaters. Each satellite provides several thousand high-quality communication channels to its customers for transmitting television and telephone signals simultaneously.
Heat treatment products
The first attempts to use microwave frequencies forfood processing received positive and even rave reviews. Microwave ovens today are used both at home and in large food industry. The energy generated by high-power electronic lamps is concentrated in an insignificant volume, which allows us to thermally process products cleanly, compactly and silently.
Встраиваемая СВЧ-печь получила наибольшее spread in the household, and it can be found in many kitchens. Also, similar devices for domestic use 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 suchelectrovacuum devices like klystron and magnetron, which are capable of generating huge amounts 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 the walls is the capacitance of the resonant circuit. The dimensions of this element are chosen according to the required resonant ultra-high frequency, which would correspond to the necessary ratios between capacitance and inductance.
So, microwave decoding is ultrahigh frequencies.The size of the generator directly affects the power of such radiation. Small magnetrons for high frequencies are so small that their power can not reach the desired values. The problem also stands with the use of heavy magnets. In the klystron, it is partially solved, since an external field is not needed in this electrovacuum device.
