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发表于 2012-10-23 17:42:12
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【资料名称】:R12-WP5D-C-0167!!MSW-E1有源天线架构提案.doc
【资料作者】:诺西
【资料日期】:26 September 2012
【资料语言】:英文
【资料格式】:DOC
【资料目录和简介】:
ITU-R Working Party 5D under Question 251/5 will study the technical and operational aspects of passive and active base station antennas for IMT systems. This contribution addresses Item 1 under Part B of Question 251/5, where it is required to provide “Definitions of active antenna systems and associated components and terminology”.
Active Antenna Systems (AAS) may deploy various internal architectures in order to create an active array, whether this is a single M-way vertical column (M elements in a vertical stack) or a full MxN array (M rows with N columns of elements). It is beneficial and important that a reference architecture be established for the following reasons:
–Test and calculation methods will vary by the type of array configurations;
–Configuration type will impact performances whether or not radiating elements of the MxN array are considered to be coherent (Inter-Modulation Distortion from power amplifiers, noise from low noise amplifiers);
–Different architectures will have different capabilities with regard to scanning, downtilting and beamforming.
In this contribution, the different radio architectures for AAS are described. It is not the objective of this document to describe all possible AAS designs but rather to offer a starting point for agreement on a general and common AAS architecture that do not exclude specific implementations. Certain implementation aspects which are not necessary to be taken into account in the test definition are omitted from the general architecture mode.
Note: For the sake of completeness, horizontal row systems are not precluded, but are not elaborated in subsequent sections for brevity.Here we only give examples of columnar arrays.
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