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Multi-antenna noise power measuring method and apparatus

A noise power and power technology, applied in the field of multi-antenna noise power measurement, can solve the problems of interference, increase the test complexity, and only measure in different times, and achieve the effect of low cost, simple structure and high efficiency

Active Publication Date: 2018-04-24
AMBIT MICROSYSTEMS (SHANGHAI) LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Because MIMO technology uses multiple antennas, when measuring antenna noise power, a spectrum analyzer (Spectrum Analyzer, referred to as SA) is often used in the prior art for measurement. However, SA is limited by the single port of SA when measuring multi-antenna systems. However, each antenna can only be measured in batches, and using SA to measure the noise power of each antenna requires additional peripheral circuits such as amplifiers and switches, which not only increases the complexity of the test, but also introduces new noise, which will greatly affect the final result. interference

Method used

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  • Multi-antenna noise power measuring method and apparatus

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Embodiment Construction

[0048] The present invention will be described in further detail below with reference to the accompanying drawings and examples.

[0049] see figure 1 , figure 1 It is a block diagram of an embodiment of the noise power measurement device 10 of the present invention.

[0050] In this embodiment, the noise power measurement device 10 is composed of two parts, which respectively make a network analyzer 110 and a shielding box 120 , and the network analyzer 110 is electrically connected to the shielding box 120 . The device under test 121 is placed in the shielding box 120. The device under test 121 may be a device including a MIMO antenna system, such as LTE, WIFI system, etc. Here, the device under test 121 is the MIMO antenna system under test. Each antenna of the device under test 121 is electrically connected to each port of the shielding box 120. In this embodiment, the shielding box 120 has three ports, respectively the first port A, the second port B and the third port ...

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Abstract

The invention provides a multi-antenna system noise power measuring method. By means of a multi-port characteristic of a network analyzer, system errors of each port and device and noise power of eachport are synchronously measured at the same time, and noise power of each antenna is calculated according to a parameter obtained by the network analyzer. The invention also provides a multi-antennasystem noise power measuring device. With respect to the multi-antenna system noise power measuring method and device, reference planes are set in a shielding box, a testing method is led in the network analyzer, and therefore accurate antenna coupled noise power can be obtained, and the multi-antenna system noise power measuring device is advantaged by being simple in structure, high in efficiency and low in cost, and can be applied to various MIMO antenna systems.

Description

technical field [0001] The present invention relates to the field of noise power measurement, in particular to a method and device for measuring multi-antenna noise power Background technique [0002] At present, with the continuous development of wireless communication technology, people have higher and higher requirements for wireless communication. Using Multiple Input Multiple Output (MIMO) technology can significantly increase the channel capacity. Using multiple antennas at the receiving end can greatly improve spectrum utilization and transmission efficiency. Because MIMO technology uses multiple antennas, when measuring antenna noise power, a spectrum analyzer (Spectrum Analyzer, referred to as SA) is often used in the prior art for measurement. However, SA is limited by the single port of SA when measuring multi-antenna systems. However, each antenna can only be measured in batches, and using SA to measure the noise power of each antenna requires additional periphe...

Claims

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Application Information

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IPC IPC(8): H04B7/04H04B17/10H04B17/29
CPCH04B17/101H04B17/29H04B7/0413H04B1/1027H04B17/0085H04B17/103H04L43/18
Inventor 张砚能
Owner AMBIT MICROSYSTEMS (SHANGHAI) LTD
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