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4G antenna classification
Sep 13, 2017

4G antenna can be divided into long-wave 4G antenna, according to the operating wavelength, 4G antenna can be divided into long-wave 4G antenna, 4G antenna, 4G antenna, 4G antenna, 4G antenna, The 4G antenna can be divided into the VS antenna and the traveling wave 4G antenna. According to the polarization characteristic, the 4G antenna can be divided into the 4G antenna and the traveling wave 4G antenna. According to the polarization characteristic, the 4G antenna Antenna can be divided into linear polarization (vertical polarization and horizontal polarization) 4G antenna, circularly polarized 4G antenna and elliptically polarized 4G antenna; according to the functional classification of frequency function, there are small 4G antenna, resonant 4G antenna, broadband 4G Antenna and mouth hard 4G antenna and so on.

4G antenna analysis method and its structure has a great relationship, in order to facilitate the theoretical analysis, generally in accordance with the different structure, the 4G antenna is divided into two categories: one is far smaller than the wavelength of the metal wire composed of wire 4G Antenna, mainly for long wave, shortwave and ultrashort wave. The more common line 4G antenna contains symmetrical oscillator, round (or square) ring 4G antenna, spiral 4G antenna and so on. The other is a scale greater than the wavelength of the metal or media surface of the surface 4G antenna, mainly for the microwave band, including the speaker 4G antenna, parabolic 4G antenna and so on. First introduce the line 4G antenna, and then in the opposite 4G antenna analysis.

4G antenna research first touch analysis, planning and induction of three aspects. The analysis of the 4G antenna is to determine the direction and impedance characteristics of a given 4G antenna configuration. 4G antenna theory analysis, in fact, is to study the 4G antenna occurred in the analysis of space electromagnetic field, and the field analysis of the resolution of the 4G antenna characteristics, any space of the electromagnetic field must meet the Maxwell equation and boundary conditions, so the solution of 4G antenna doubt Is based on 4G antenna specific boundary conditions (such as encouraging conditions, boundary conditions and radiation conditions, etc.) to find the solution of the electromagnetic field. The planning of the 4G antenna is to determine the hardware characteristics (length, viewpoint, etc.) of a particular 4G antenna where the desired pattern and impedance occur. 4G antenna induction, in general terms is the first given a given direction of the map, and then get the way to get the 4G antenna way, so that the direction of the map can meet the hope that the direction of hope, and to meet the system of other constraints ; Narrow sense is to determine the given 4G antenna way to encourage, so that the occurrence of the map can meet the direction of the hope of hope.

4G antenna part in the solution of the fundamental radiation unit (current element, magneto-current element and Huygens face element) on the basis of spatial field spread, the basic knowledge of the 4G antenna to introduce, so that readers grasp the fundamental principles of 4G antenna and the fundamental analysis method The In order to give readers a full understanding of the 4G antenna, also introduced a variety of typical 4G antenna and 4G antenna in some areas of use.