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Method and device for measuring noise power of multiple antennas

A noise power and power technology, which is applied in the field of multi-antenna noise power measurement, can solve problems such as interference, only divided measurement, and increased test complexity.

Active Publication Date: 2021-09-10
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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  • Method and device for measuring noise power of multiple antennas
  • Method and device for measuring noise power of multiple antennas
  • Method and device for measuring noise power of multiple antennas

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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 method for measuring the noise power of a multi-antenna system, which uses the multi-port characteristics of the network analyzer to simultaneously measure the system error of each port and equipment, and the noise power of the port, and calculates the noise of each antenna according to the parameters obtained by the network analyzer power. The invention also provides a device for measuring noise power of a multi-antenna system. The multi-antenna system noise power measurement method and device provided by the present invention set the reference plane in the shielding box and introduce the test method into the network analyzer to obtain accurate antenna coupling noise power, which has the advantages of simple structure, high efficiency and low cost Advantages, applicable 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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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/0413H04B17/10H04B17/29
CPCH04B17/101H04B17/29H04B7/0413H04B1/1027H04B17/0085H04B17/103H04L43/18
Inventor 张砚能
Owner AMBIT MICROSYSTEMS (SHANGHAI) LTD
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