Types of OTA Setups

When we say Radiative testing, it usually refers to various different types of configurations as shown below. These are just a few typical examples that you may see most often, but these are not all. There are so many different variations of Radiative Test Setups. Even though the terms OTA Test and Radiative Test can be used interchangeably, when we say OTA test without any specific details, we normaly think of the configuration like (C) or (D) shown below. As shown below, it is test in a chamber lined with absorbers (this kind of chamber is called Anechoic chamber. Anechoic means 'No Echo'. 'No Echo' in this case mean 'No reflection from any object in the box).

|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| (A) | (B) |
| | |
| This may be one of the simplest way. We use a wide planar patch antenna and put the DUT on top of the antenna pad. Very convinient for the test like protocol or function test which does not require accurate RF measurement. However, unless you does not use this setup within a shield room, it may suffer from the interference from surroundings (e.g, from live network or other equipment) | In terms of Antenna setup, this is almost same as (A). But in this case the antenna pad and UE is within a small RF chamber. The benefit of this type comparing to (A) is that it can block the interference signal(e.g, interference from live network or neighbouring equipment) |

|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| (C) | (D) |
| | |
| This is a chamber made up of a conductive metal (usually copper). As in (B), this can block the interference from surroundings and at the same time it can reduce the interference from reflections in side of the box. When a electromagnetic wave from DUT or equipment hits the conductive wall, large portions of the wave can be obsorved by the conductor. | This would be the ideal solution for OTA test which requires a certain level of measurement accuracy. It is lined with special absorvers and usually has positioner in it which can change the direction of the DUT by external conroller. |

相关推荐
智者知已应修善业2 天前
【multisim汽车尾灯设计】2022-12-1
驱动开发·经验分享·笔记·汽车·硬件架构·硬件工程
来生硬件工程师3 天前
【硬件笔记】负载是如何烧MOS的?
笔记·嵌入式硬件·硬件架构·硬件工程·硬件设计
码界奇点3 天前
豆包新模型矩阵与PromptPilot构建企业级AI开发的体系化解决方案
人工智能·线性代数·ai·语言模型·矩阵·硬件工程
陌夏微秋5 天前
FPGA硬件设计4 ZYNQ外围-以太网-PL/PS
stm32·单片机·嵌入式硬件·fpga开发·硬件架构·硬件工程·信息与通信
先做个垃圾出来………5 天前
显存与内存
硬件工程
逼子格7 天前
【Proteus仿真】蜂鸣器控制系列仿真——蜂鸣器控制/蜂鸣器播放音乐/蜂鸣器播放多种音乐/蜂鸣器和LED组成报警装置
单片机·嵌入式硬件·proteus·硬件工程·蜂鸣器·流水灯
XH183226561938 天前
关于PXIe工控机的网速问题XH-PXIe7313万兆网卡
硬件工程
国科安芯15 天前
高速CANFD收发器ASM1042在割草机器人轮毂电机通信系统中的适配性研究
网络·单片机·嵌入式硬件·性能优化·机器人·硬件工程
逼子格15 天前
【Protues仿真】基于AT89C52单片机的数码管驱动事例
单片机·嵌入式硬件·硬件工程·硬件工程师·protues·数码管·电路仿真
智能物联实验室17 天前
如何低门槛自制Zigbee 3.0温湿度计?涂鸦上新开发包,开箱即用、完全开源
嵌入式硬件·开源·硬件工程