Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

System and method for testing power stability of highly stable radiofrequency signal

A power stability and radio frequency signal technology, which is used in the measurement of electrical power, electrical devices, measuring devices, etc., can solve the problem that the stability characteristics cannot meet the test requirements of high stability radio frequency signal power stability, and the measurement accuracy of the power meter is limited. Stability and other issues, to achieve the effect of improving confidence and validity, real-time measurement

Active Publication Date: 2016-09-07
THE 41ST INST OF CHINA ELECTRONICS TECH GRP
View PDF6 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The power stability of existing radio frequency signals is usually obtained by using a microwave power meter for testing and calculation based on the power measurement mode. It can be seen from the above that when the amount of test data is large enough, the power measurement has the greatest impact on the power stability results. The data results, while the power measurement data results are limited by the power meter measurement accuracy and stability and other index characteristics
When the power (amplitude) stability of the radio frequency signal reaches 0.1% or even higher, according to the usual mode of measurement calibration, to achieve effective test evaluation, the power measurement accuracy and stability and other indicators should reach at least 0.03% ~ 0.01% Or a higher order, but the current traditional microwave power meter's highest accuracy index of 0.2% and the unspecified stability characteristics cannot meet the test requirements of high stability RF signal power stability

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • System and method for testing power stability of highly stable radiofrequency signal
  • System and method for testing power stability of highly stable radiofrequency signal
  • System and method for testing power stability of highly stable radiofrequency signal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0023] like figure 1 As shown, the test system suitable for high stability radio frequency signal power stability includes directional coupler, attenuator group, microwave power meter, host computer, high-precision digital multimeter and diode detector. The directional coupler and attenuator group , Microwave power meters are connected in series sequentially, and the upper computer performs system application measurement and control on the microwave power meter and the high-precision digital multimeter respectively through the program-controlled bus. The multimeter is connected, and the diode detector is a gallium arsenide diode detector.

[0024] The diode detector is arranged in the constant temperature chamber.

[0025] The gallium arsenide diode detector utilizes square law characteristics for detection. The detection method with square law chara...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a system and method for testing power stability of a highly stable radiofrequency signal. The system includes a directional coupler, an attenuator set, a microwave power meter, an upper computer, a high precision digital universal meter and a diode detector. The directional coupler is successively in serial connection to the attenuator set and the microwave power. The upper computer conducts system application measurement and control respectively on the microwave power meter and the high precision digital universal meter. A coupling end of the directional coupler is connected to the diode detector. The diode detector is in connection to the high precision digital universal meter and is a gallium arsenide diode detector. According to the invention, the system and the method have the following benefits: through the testing of stability of demodulation voltage, the evaluation object in testing the power stability of the radiofrequency signal is synchronously acquired in a non-distortion manner, and a constant temperature chamber and a gallium arsenide device are configured to reduce the influence on the demodulation voltage by temperature changes to the minimum with the proviso that the power of the input radiofrequency signal stays unchanged.

Description

technical field [0001] The invention relates to the technical field of microwave testing, in particular to a testing system and method suitable for high stability radio frequency signal power stability. Background technique [0002] Power is one of the basic parameters in the high-frequency and microwave fields, which characterizes the transmission characteristics of high-frequency and microwave sources, mainly including index characteristics such as power accuracy and power stability. In some practical applications that require high stability of the output power (amplitude) of the RF signal, especially when the stability of the power (amplitude) reaches 0.1% or even higher, how to effectively test and trace the stability characteristics has become a problem. Technical problems that urgently need to be solved. [0003] At present, the power accuracy and power stability test of the radio frequency signal is usually carried out by a microwave power meter, and the radio freque...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01R21/00H04B17/15
CPCG01R21/00H04B17/15
Inventor 郭敏吴家亮樊晓腾刘盛
Owner THE 41ST INST OF CHINA ELECTRONICS TECH GRP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products