【正文】 the distance from the RF signal after receiving the antimodulation, and then restore the electric sources of information, this process is known as the wireless transmission. Mediumrange transmission of electromagnetic loss of the small antenna technology, and with the diode, noncontact IC card, and wireless electronic tags, etc., to achieve high efficiency wireless power transmission.Specifically, the device consists of two coils, each coil is a selfoscillating system. One transmitter is connected with energy, it does not emit electromagnetic wave out, but to use the oscillator to generate high frequency oscillation current outward emission of electromagnetic waves through the transmitter coil surrounding the formation of a nonradiative magnetic field, is about to convert electrical energy into magnetic field . When the natural frequency of the receiving device with the received electromagnetic wave frequency oscillation generated in the receiver circuit current is the strongest, to plete the conversion of magnetic to electrical energy in order to achieve efficient transmission of electrical energy. Figure 2 is a typical use of the electromagnetic resonance to achieve wireless power transmission system solutions. The higher the frequency of electromagnetic radiation energy to the space, the greater the higher transmission efficiency. Microwave / Laser Remote transmissionIn theory, the shorter the wavelength of radio waves, the orientation of the better dispersion smaller. Can take advantage of the remote transmission of electrical energy in the form of microwave or laser to use for the development of new energy to solve energy shortage problem in the future is of great significance. 1968, . engineer Peter Guerra proposed the concept of space solar power Space Solar Power (SSP). The idea is to establish too power base through the microwave energy back to Earth in the Earth39。s electric power munication network through the construction of several decades of ups and downs, has begun to take shape, build and bee interchange munication network via satellite, microwave, carrier, cable and other means of munication. With the development of wireless munication technology, wireless munication system characteristics change dramatically. In recognition of the wireless munication network is not dependent on the grid grid, and strong resistance to natural disasters, but also has large bandwidth and transmission distance, nonlineofsight transmission, etc., is very suitable to make up for the munication of single coverage inplete surface defects . This paper briefly describes the application characteristics, advantages and disadvantages of wireless munications transmission system, and analyze the prospects of its application in power system. Complete network transmission system based on the future development trend of the sensor network towards the network to further improve the technology the application of the sensor network technology and network support. Promote the application of sensor networks from the perspective of the manufacturing of sensor node hardware platform, network application technology development to realworld applications into。s operations. Compared to leased lines, microwave systems, as long as a year or so can be recovered. Second, the microwave transmission system deployment simple and fast. Compared with the traditional means of transmission, the advantages of rapid deployment to meet the needs of the development of new business. Third, the current microwave products for the future development is to protect, for new business and new demands of the operators can give good support. The future, the microwave transmission system will be upgraded to allIP platform, can fully support the future development of the operators.(Ix) satellite munications technologyThe use of satellite with terrestrial munications in some not very densely populated areas. Scattered in these areas, but not intensive users of a wider scope, you can use the satellite as a user connected to the fixed wireline network access facilities. Terrestrial munications network constitutes a broadband multimedia munications network, using the satellite into a broadband satellite access system is relatively good and realistic program, and reliable.Satellite munications, after all, the construction of the satellite as a munications platform, the ground station, the munication channel rental costs need to spend a lot of money, and munication resources for the satellite munications pany, by its bandwidth limit, the transmission of large amounts of data need to pay a very high price. Therefore, as the daily production, the life use is extremely uneconomical。 from the point of view of network security and QoS mechanisms, WiMax, and 3G technology in this respect have done quite good, perfect, the rest there is a big problem.Wireless technology and ProspectsAt present, with a high transfer rate, high bandwidth, high reli。 it increases the ability to signal antifading channel, changed for the better quality of wireless transmission。s perception of the information will be easier to understand.Second, the wireless technology introduced(A) the concept of wireless munication technologyCurrently, wireless munications and its applications has bee one of the most active areas of research in the information science and technology today. The general by the wireless base stations, wireless terminal and application server.(B) the development status of wireless munication technologyWireless munications technology in accordance with the transmission distance can be roughly divided into the following four technology based on wireless personal area network (WPAN), wireless metropolitan area network based on wireless local area network (WLAN) based on the ( WMAN) and wireless WAN (WWAN).Overall, the representatives of the longdistance wireless access technologies: GSM, GPRS, 3G。s network of