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Automatic testing system and testing method for non-contact transmission characteristics of millimeter waveband

An automatic test system and transmission characteristic technology, applied in transmission system, transmission monitoring, communication channel monitoring, etc., can solve the problems of long purchase cycle, large volume, redundant functions, etc.

Active Publication Date: 2012-01-04
杭州芯影科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The second is called the spread spectrum test system based on scalar network analyzer, which mainly includes ① scalar network analyzer, ② transmit spread spectrum module, ③ receive spread spectrum module, ④ DC regulated power supply, ⑤ power source spread spectrum module, There are a total of 5 types of equipment, not including the microwave and millimeter wave test cables connecting the equipment. However, the scalar network analyzers of various manufacturers are currently in a state of discontinuation
[0009] 1) Since they are all general-purpose products, they have redundant functions, that is, quite a few functions are almost completely unusable in the field of 76GHz~77GHz transmission characteristic testing
[0010] 2) Due to the need to adopt the spread spectrum system, the volume is relatively large, that is, no manufacturer in the field of test and measurement instruments has publicly developed an integrated test and measurement instrument for Up to 77GHz. Currently, the highest integrated test and measurement instrument is the highest The test frequency is only 67GHz
[0011] 3) Since it is a general-purpose product, spread spectrum technology is required, the price is quite expensive, and the purchase cycle is long
[0012] 4) Due to the collaborative work between multiple test and measurement instruments and spread spectrum modules involved, it is not easy for customers to realize customized functions according to their special requirements
For each test item, connect the corresponding instrument and the device under test. This kind of manual test cannot satisfy the mass-oriented assembly line production. If the test automation is not realized, the test will be quite cumbersome, time-consuming and labor-intensive, and affect the measurement accuracy, and it cannot be automated. Perform test data analysis

Method used

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  • Automatic testing system and testing method for non-contact transmission characteristics of millimeter waveband
  • Automatic testing system and testing method for non-contact transmission characteristics of millimeter waveband
  • Automatic testing system and testing method for non-contact transmission characteristics of millimeter waveband

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Embodiment 1

[0099] This embodiment provides an automatic test system for non-contact transmission characteristics in the millimeter wave band, such as figure 1 As shown, it includes electrical test platform A, mechanical support platform B, and control platform C; electrical test platform A is connected to mechanical support platform B, and control platform C is connected to electrical test platform A; the whole system works at 76GHz to 77GHz. Low-cost and high-efficiency 76GHz~77GHz non-contact transmission characteristic parameter automatic testing is realized through virtual instrument technology and spread spectrum technology.

[0100] 【Electrical Test Platform 1】

[0101] The electrical test platform A includes a transmitter A1 and a receiver A2.

[0102] Such as figure 2 As shown, the transmitter A1 includes a direct digital frequency synthesizer A101, a 76GHz-77GHz active frequency multiplication chain A102, a directional coupler A103, a transmitting antenna A104, a transmitting...

Embodiment 2

[0137] This embodiment provides a test method for the automatic test system of the millimeter wave band non-contact transmission characteristics described in the first embodiment, the method includes the following steps:

[0138] (1) The initialization steps of the automatic test system.

[0139] First, ensure that the entire test system is properly grounded, and the test environment is at normal temperature (for example, 25° C.) and humidity (for example, 40%). Secondly, by adjusting the vertical lifting platform of the transmitter and the vertical lifting platform of the receiver, ensure that the transmitting antenna and the receiving antenna are in the same plane. Then, slowly move the horizontal sliding guide rail to reserve a test space for the DUT, where the minimum test distance is determined by the maximum range of the ADC unit in the receiver signal control / acquisition / processing unit, and the maximum test distance is determined by the receiver signal control / The mi...

Embodiment 3

[0173] This embodiment describes in detail the specific implementation process of the present invention as follows:

[0174] An automatic test method for 76GHz-77GHz non-contact transmission characteristics based on virtual instrument technology and spread spectrum technology, include at least :

[0175] The initialization steps of the automatic test system;

[0176] Calibration procedures for automated test systems;

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Abstract

The invention discloses an automatic testing system and an automatic testing method for the non-contact transmission characteristics of a millimeter waveband. The method comprises the following steps of: initializing the automatic testing system for the non-contact transmission characteristics of the millimeter waveband; calibrating the automatic testing system for the non-contact transmission characteristics of the millimeter waveband, and finishing a spatial transmission characteristic test under the condition of no element to be tested to obtain test information in a calibration state; finishing a transmission characteristic test under the condition that the element to be tested exists to obtain test information in a test state; obtaining the corresponding power information of a transmitter and a receiver under each frequency value; and subtracting power information obtained in the calibration state from power information obtained in the test state, and displaying a test curve of the transmission characteristics of the element to be tested. By the system and the method, a test in transmission characteristic parameters of 76 to 77GHz can be realized automatically, the problem of absence of millimeter wave testing means and testing equipment is solved, and the shortcomings of high cost, large volume, difficulties in automatic control and the like of testing equipment are overcome.

Description

technical field [0001] The invention belongs to the technical field of testing and measuring of solid-state electronics, and relates to an automatic testing system and testing method of millimeter-wave band non-contact transmission characteristics. Background technique [0002] With the gradual development of the traditional traffic mode in the direction of intelligence, safety, energy saving, and high efficiency, the 77GHz ACC (Adaptive Cruise Control, Adaptive Cruise Control) system can realize that vehicles can drive freely on the road by their own intelligence, and roads rely on their own intelligence. Adjust the traffic flow to the best state; with the help of this system, managers will have a clear grasp of the whereabouts of roads and vehicles. The ACC system on the new BMW 7 series has been transplanted to the new BMW 5 series. This system has a different control program from the traditional cruise system. Through the control handle under the steering wheel, the driv...

Claims

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Application Information

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IPC IPC(8): H04B17/00H04B17/30
Inventor 吴亮孙晓玮李江夏钱蓉佟瑞楼丹胡泽鑫沈玮
Owner 杭州芯影科技有限公司
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