Mobile communication system base station antennas 移動通信系統基站天線技術條件
On study of omnidirectional base station antenna use for personal communications 一種用于個人通信的基站全向天線的設計思路
Therewith , the design of the base station antenna , which is a vital component of a wireless system , should take into account many factors 與此相對應,移動通信系統中的關鍵部分? ?基站天線在設計時也需要綜合考慮更多的因素。
This pattern diversity antenna has been used as the base station antenna in the mimo experimental system and several results have been obtained 將該天線作為基站天線用于mimo實驗系統平臺上進行了一系列的實驗,對一些典型的實驗現象和實驗數據進行了分析討論。
In distributed mimo systems , the antennas at the side of base station are not co - located in the base station , but distributed in different locations , making the distance from different base station antennas to the mobile station different 分布mimo系統中,基站天線分布于不同的地理位置,造成從不同的基站天線到移動臺的距離不同。
We manfucture cdma , gsm , phs base station antennas ; 800mhz trunking repeater digital antenna and indoor antennas ; wireless public telephone antennas ; the band antennas and microwave antennas 我公司生產終端天線(數字電視天線,車載娛樂系統天線,無線供話天線,網卡天線,手機天線) ; cdma , gsm , phs基站天線,室內信號分布天線;微波天線等。
In the next generation of wireless communication , the base station antenna should have these functions : integration of different diversity methods to release multi - path fading , beam - downtilt to reduce co - channel interference , beam - forming to optimize coverage 在設計新一代移動通信基站天線時,應使天線能綜合各種分集方式進行天線分集以消除多徑效應,具有波束下傾以減少同頻干擾,能波束賦形以實現優化覆蓋。
In this dissertation , switched parasitic pattern diversity yagi - uda antenna array used for the base station has been illustrated after the introduction of mimo technologies and the analysis of the base station antenna design for next generation of wireless communication 本文在介紹mimo技術和分析新一代移動通信中基站天線的設計思路的基礎上,給出了一種適用于mimo系統基站、具有角度分集功能的開關八木天線陣列。
Rfid antennas we research operate at 915mhz , which belong to vhf , therefore microstrip patch antenna is adopted as base station antenna and various balanced dipole antennas are employed as tag antennas . then , a brief introduction is given on the radiating principles of the microstrip antenna 由于本課題所研究的rfid天線主要工作于915mhz ,屬于甚高頻波段,因而基站天線主要采用微帶貼片型,標簽天線主要采用各種對稱振子型天線。
Above ground , several stations are equipped with a base station antenna to cover their areas . below ground , communication is via leaky coaxial cables driven by radio base stations located in each underground station . as a result , interference at entrances to underground stations happens frequently 3 .地面沿線部分由數個車站設置基地臺之天線電波涵蓋,地下車站每一車站皆有基地臺透過漏波電纜輻射涵蓋,因而地下車站出入口部分干擾常常很嚴重。