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Antenna pointing characteristic measurement system and measurement method for wireless terminal

A wireless terminal and terminal antenna technology, applied in radio wave measurement systems, antennas, wireless communications and other directions, can solve the problems of difficult measurement and large free space propagation loss in the millimeter wave band

Active Publication Date: 2020-11-06
ANRITSU CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] However, if Figure 8 As shown, compared with the 800MHz band and the 2GHz band, the propagation loss in the free space of the millimeter wave band (28 GHz) is particularly large. Measurement of directivity characteristics with high precision

Method used

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  • Antenna pointing characteristic measurement system and measurement method for wireless terminal
  • Antenna pointing characteristic measurement system and measurement method for wireless terminal
  • Antenna pointing characteristic measurement system and measurement method for wireless terminal

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Embodiment Construction

[0067] Embodiments of the present invention will be described below with reference to the drawings.

[0068] figure 1 A configuration of an antenna directivity characteristic measurement system (hereinafter, simply referred to as a measurement system) 20 according to an embodiment of the present invention is shown in .

[0069] The measuring system 20 is composed of a measuring antenna 21 , a terminal holding and rotating mechanism 30 , a radio wave intensity measuring unit 40 , and a computer-configured arithmetic processing unit 50 .

[0070] The measurement antenna 21 is an antenna with known directional characteristics fixed at a predetermined position in a measurement space (not shown) where the entrance of radio waves from the outside and the reflection of radio waves from the inside are suppressed, and the receiving antenna is similarly arranged in the measurement space. The radio wave output from the wireless terminal 1 of the measuring object in the . In the mmWave...

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Abstract

The pointing characteristic acquisition unit (51) rotates the wireless terminal (1) of the measurement object around the reference point (O) through the terminal holding and rotating mechanism (30), and measures each rotation angle through the radio wave intensity measuring unit (40). The electric field intensity of the radio wave received by the antenna (21) is measured to obtain the temporary directivity characteristic of the terminal antenna (1a) in the wireless terminal (1). The error information output unit (60) calculates the reception angle error propagation loss error (E1) and the gain error ( E2), the correction unit (70) uses these errors to correct the temporary pointing characteristics, thereby obtaining the pointing when the terminal antenna (1a) of the wireless terminal (1) is assumed to be rotated at the position of the reference point (O) Characteristics (Hc).

Description

technical field [0001] The invention relates to a technology for accurately measuring the far-field pointing characteristics of antennas of wireless terminals such as mobile phones, smart phones, tablet computers and wireless routers. Background technique [0002] For frequencies used in wireless terminals called 3rd and 4th generations (e.g., 800MHz / 2000MHz, etc.), frequencies used in next-generation (fifth-generation) wireless terminals have been assigned, for example, 24.25GHz / 28GHz / 39 GHz and other millimeter wave bands, a technique for measuring antenna directivity characteristics of wireless terminals using this millimeter wave band is required. [0003] Usually, the measurement of antenna pointing characteristics is the measurement of the electric field strength or the magnitude of the radiated power (hereinafter referred to as radio wave strength) in the far field, and the distance condition of the far field is carried out under the condition that the distance R bet...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R29/10
CPCG01R29/10H04B17/104G01S3/38H04W64/006H04W4/80H01Q1/1257
Inventor 森田智纪山本绫
Owner ANRITSU CORP