摘要
The global bandwidth shortage of wireless communications has motivated the exploration of the millimeter wave(mm-wave)frequency spectrum for the next generation wireless communications.Recent advances in RF CMOS technology and high speed baseband signal processing technologies have enabled the extensive research and development of mm-wave wireless communications.The multi gigabit per second data rate of mm-wave system will lead to applications in many important scenarios,such as WPAN,WLAN,back-haul for cellular system.And the frequency
The global bandwidth shortage of wireless communications has motivated the exploration of the naillimeter wave （ram-wave） frequency spectrum for the next generation wireless communications. Recent advances in RF CMOS technology and high speed baseband signal processing technologies have enabled tile extensive research and development of turn-wave wireless communications. The multi gigabit per second data rate of ram-wave system will lead to applications in many important scenarios, such as WPAN, WLAN,back-haul for cellular system. And the frequency bands include 28 GHz, 38 GHz, 45GHz, 60GHz, E-BAND and even beyond 100 GHz. The propagation and the imitation of the RF circuits design in these frequency bands make the directional antennas be inevitable for mm-wave communications.
