Why MM

RF technology is mainly used in the Information transmission of the communication system in 4G era. No matter how the ‘generation’ changes in wireless mobile communication, public network, and private network of industry users, for RF technology and product, the only thing need to be done is to supply the filer and coupler with high-Q in different band, the miniaturized antenna with high linear and high efficient and low power consumption, and the feed network with low loss and low power consumption. The research on the miniaturization of active antenna promotes the derivative application in the communication frequency band (300MHz-3GHz) with better ground transmission conditions and most commonly used, such as: the object-oriented radio and television system, public broadband mobile communications network, Broadband trunking network, and professional terminal and sub-system of the multi-frequency multi-mode transmission (Beidou global navigation satellite system) and et cetera.