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Installation Of 2-axis Car Satellite TV Antenna Should Pay Attention

Edit: Dotogo Tecchnologies Co.,Ltd      Date:Sep 06, 2017

Installation of 2-axis Car Satellite TV Antenna should pay attention
2-axis Car Satellite TV Antenna is what we now have every family, but in some cases we should also know a lot about 2-axis Car Satellite TV Antenna should pay attention to what the installation?
Now life is getting better and better, we live is not the same, we now have an indispensable thing in life that is 2-axis Car Satellite TV Antenna, there are a lot of people are asking for good material.
The role of 2-axis Car Satellite TV Antenna
In any radiocommunication apparatus, there is always a means for radiating electromagnetic energy and receiving electromagnetic energy from the space, which is a 2-axis car satellite television antenna. The role of a 2-axis satellite satellite television antenna is to transmit a digital signal or analog signal modulated to a radio frequency to a spatial radio channel or receive a digital or analog signal modulated at a radio frequency from a spatial radio channel.
2-axis automotive satellite TV antenna problem from the electromagnetic field theory, 2-axis Car Satellite TV Antenna problem is essentially to study 2-axis satellite satellite TV antenna generated by the spatial electromagnetic field distribution, and by the spatial electromagnetic field distribution determined by the electrical characteristics. The electromagnetic field at any point in the space satisfies the electromagnetic field equation - the Maxwell equation and its boundary conditions. Therefore, the 2-axis automotive satellite TV antenna problem is a special form of time-varying electromagnetic field problems. From the signal system point of view, 2-axis automotive satellite TV antenna problem can be understood as an electromagnetic wave excitation source generated by the electromagnetic response characteristics. From the perspective of the communication system, the 2-axis Car Satellite TV Antenna can be understood as the signal transmission and receiver, send and receive 2-axis Car Satellite TV Antenna between the radio signal strength to meet the channel transmission equation and multipath fading characteristics.
Generally for the communications industry, the use of 2-axis Car Satellite TV Antenna is very large, we have a unified understanding in this regard, for this technology, in the production process, the involvement of raw materials need to pay attention , Different uses, then the use of 2-axis Car Satellite TV Antenna is also different, especially for the user port, the classification of its electronic accessories is not the same, we have to classify the technology in this regard, whether civil Communications or military fields, in this regard are very extensive use.
So for the communication 2-axis Car Satellite TV Antenna, it is the production of raw materials which, in fact, for the mobile communications industry, in the 2-axis Car Satellite TV Antenna production process, the proportion of technology is very large , And according to the production characteristics of the 2-axis Car Satellite TV Antenna, in the communication equipment, pay attention to use, such as mobile phones, telephones, computers and other terminal port is not the same characteristics, in this type is essential The difference.
At present most of the GPS2-axis Car Satellite TV Antenna for the right-handed polarized ceramic media, its components are: 2-axis Car Satellite TV Antenna, low noise signal module, cable, connector. One of the 2-axis Car Satellite TV Antenna, also known as passive 2-axis Car Satellite TV Antenna, medium 2-axis Car Satellite TV Antenna, PCTAH, it is GPS2 axis car satellite TV antenna core technology. A GPS2-axis Car Satellite TV Antenna's signal acceptance capability, most depending on the ingredients of its ceramic parts ingredients.
The low noise signal module, also known as the LNA, is part of the signal that is amplified and filtered. Its component selection is also very important, otherwise it will increase the GPS signal reflection loss, and cause excessive noise. The choice of cable should also reduce the reflection as a standard to ensure that the impedance of the match.
The impact of GPS2-axis Car Satellite TV Antenna performance is mainly the following aspects:
1, ceramic pieces: ceramic powder is good or bad and sintering process directly affect its performance. Ceramic pieces are mainly 25 × 25, 18 × 18, 15 × 15, 12 × 12. The larger the ceramic sheet area, the greater the dielectric constant, the higher the resonant frequency, the better the acceptance. Ceramic pieces are mostly square design, is to ensure that the resonance in the XY direction is basically the same, so as to achieve the effect of uniform convergence.
2, silver layer: 2-axis Car Satellite TV Antenna surface silver layer can affect the 2-axis Car Satellite TV Antenna resonance frequency. The ideal GPS ceramic chip frequency accurately falls at 1575.42MHz, but the 2-axis Car Satellite TV Antenna frequency is very susceptible to the surrounding environment, especially in the machine, must be adjusted by adjusting the appearance of silver coating to adjust the frequency Re-maintain at 1575.42MHz.
3, the feed point: 2-axis Car Satellite TV Antenna through the feedback point to collect the resonance signal and sent to the back-end. Due to the 2-axis Car Satellite TV Antenna impedance matching reasons, the feed point is generally not in the center of the 2-axis Car Satellite TV Antenna, but in the XY direction to do minor adjustments. This impedance matching method is simple and does not increase the cost. Only the movement in the uniaxial direction is called a single offset 2-axis Car Satellite TV Antenna, both in the two axes are called the movement.
4, amplifier circuit: carrying 2-axis Car Satellite TV Antenna PCB shape and area. As the GPS has a touch to the characteristics of the rebound, when the background is 7cm × 7cm without interruption of the earth, patch2 axis car satellite TV antenna performance can be played to the extreme. Although subject to the appearance of structural constraints, but try to maintain a considerable area and uniform shape. The gain of the amplifier circuit must be selected in conjunction with the back-end LNA gain. Sirf GSC3F requires that the total gain before signal input should not exceed 29dB, otherwise the signal over-saturation will produce self-excited.