Categorization:Product Information
In the process of practical application of radio communication technology, antenna as one of the important components, in the process of the whole radio communication system has a very important role. Usually, the antenna function is mainly applied to the signal propagation, in the whole radio communication system plays a role of wave output and reception. Therefore, in the process of radio communication system installation and construction, the selection and installation of antenna is very important. With the continuous development of science and technology, radio communication technology has been widely used by people, which is not only conducive to the development of human society and economy, but also brings a lot of convenience to people's life. And we are in the process of radio communication technology, the main content is involved in the transmission and launch of the two aspects of the wave, but these two aspects of the content are radio communication antenna to complete, so it has a very important significance in it. Below we have a brief introduction to the role of radio communication antenna.
First, the working principle of the antenna As we all know, in the process of radio communication system operation, the antenna is mainly used for the reception and transmission of radio waves, which is one of the indispensable components of the radio communication system. But how does it receive and transmit radio waves? To this end, we need to analyze the working principle of the antenna in detail. The working principle of the antenna and the changes in the magnetic field has a very close relationship, and the so-called changes in the magnetic field refers to, caused by the electric field, the magnetic field acts on the electric field of the electromagnetic wave changes, in which the fluctuation of electromagnetic wave has the radiance, can be used for the transmission of information, and the antenna this is through the radiation out of the electromagnetic wave perception, so that the electromagnetic wave in the propagation of the process, with a certain directionality, so as to Meet the relevant requirements of electromagnetic wave information reception. Second, the role of antenna in radio communication in the process of social and economic development, radio communication technology has been widely used by people, which is not only conducive to the construction of social and economic development, but also to people's daily life and social production has brought a lot of convenience. The role of antenna in the radio passage is mainly manifested in the following aspects. 1, first of all, the antenna in the process of radio communication, radio electromagnetic wave signals have a strong perception ability, it can be relatively weak signal to play a good perception effect, so that the electromagnetic wave to play a good directional role, so that people on the electromagnetic wave in the extraction of the useful signals. Secondly, the antenna can also separate the signals in the radio waves in the process of normal use, so that it is very good to reduce the signal interference, so that the radio communication system to accept the signal ability to be further improved. Finally, the radio communication antenna in the process of practical application, can also establish a wireless connection between the user, which makes the performance of radio communication technology has been further improved. 2, the conductor of the antenna will occur in the actual use of the process of loss, such loss will have an impact on the accurate propagation of radio signals, resulting in the antenna's power can not be converted completely into electromagnetic waves. At this time, the antenna can be an energy converter, its role is to reduce the loss caused by various reasons, and then match with the feed line, enhance the resistance of the radiation, in order to reduce the loss of the signal, to ensure that the signal is converted and transmitted accurately. 3, the antenna gain, that is, the efficiency of the antenna and the direction of the system of the product. Antenna gain is used to measure the actual efficiency of the antenna to convert energy, is an important parameter to measure the signal conversion and propagation, the more layers of the antenna, the greater the antenna gain. Antenna gain helps to realize system gain. The so-called system gain is to use the antenna to significantly increase the power radiated, increase the benefit. 4, input impedance and radiation impedance: the so-called input impedance, refers to the impedance presented in the feed side, the value of this impedance is the ratio between the feed current and the feed voltage. Typically, this ratio is a complex number. We consider the real number of this complex number as the input resistance and the imaginary part as the reactance. The input impedance is an important parameter because we must know the values of the output resistance and input reactance when there is a matching or coordination problem in the antenna loop. In the radio communication system, the main factors affecting the input impedance are the specific construction of the antenna and how many working frequencies of the antenna, in addition to the working environment of the antenna and other related factors will also have an impact on the input impedance. Therefore, we should have strict requirements on the size and shape of the antenna in the actual installation process, and select the antenna with reasonable construction. In addition, selecting the antenna with larger radiation resistance can effectively ensure that the input impedance of the antenna matches the feed line impedance up 5, antenna array: antenna array is a method invented to strengthen the directionality of the electromagnetic wave radiation and the strength of the electromagnetic wave radiation, which is one of the important roles of the antenna in the actual radio communication in the actual radio communication in the actual work of the radio communication system. The specific practice is: a number of antennas with equal operating frequencies are arranged and combined in a certain law, which forms the antenna array we are talking about. When electromagnetic waves pass by, under the action of the antenna array, the electromagnetic waves will be superimposed in the right amount. This can effectively enhance the directionality of electromagnetic wave radiation and radiation intensity, the whole radio communication has an immeasurable huge increase. Third, the choice of antenna and set up how to choose the ideal antenna is related to the role played by the antenna in radio communication, the quality of radio communication has a greater impact. Ideal antenna should have the following qualities: scientific design, strong antenna gain, better matching, longer service life, high safety factor, easy to set up. After selecting the ideal antenna, it is also necessary to set it up correctly: when setting up, it should be far away from those conductors which can absorb and reflect the electric wave; it can't be set up in parallel with the telephone line, power line and other related lines; different types of antennas should have a certain distance, the radio antenna, telephone antenna, TV antenna should be set up separately, and it can't be too close to each other, and so on.
Modern society is a society of rapid development of science and technology, people's life, study, work and other aspects rely on high technology. The invention and further development of radio communication technology has brought great convenience to people's life and work. Antenna is an important component in radio communication technology, which is a device for sensing, energy conversion, receiving and transmitting electromagnetic waves. In the process of use, the antenna can be electromagnetic wave signal gain, at the same time in the process of energy conversion and transmission can also reduce the signal loss, is an indispensable part of all radio communication technology. With the increasing progress of science and technology, we believe that the radio communication technology will be more advanced direction, while the antenna technology will be more and more perfect, faster, better, stronger for people's life and learning to bring help. In conclusion, in the process of the current development of human society, radio communication technology has been widely used by people, which is not only conducive to the development of China's socialist market economy, but also brings a lot of convenience to people's life and production. The antenna as an important part of the radio communication system, a detailed understanding of its role is also very important, which is conducive to the radio system installation and construction processing. However, with the continuous development of social economy, people also apply many advanced science and technology to it, which makes the application effect of radio communication technology to be further guaranteed, so as to promote the development of China's socialist market economy.
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