Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for measuring the scattering parameters of a multiport apparatus with non-sinusoidal measurement signals

A technology for measuring signals and scattering parameters, applied in the direction of measuring electrical variables, measuring devices, measuring resistance/reactance/impedance, etc., which can solve problems such as reducing measurement accuracy

Active Publication Date: 2009-07-15
ROHDE & SCHWARZ GMBH & CO KG
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, practical experience has shown that even if the network analyzer has been accurately calibrated, the use of non-sinusoidal measurement signals will still seriously reduce the accuracy of the measurement

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
  • Method for measuring the scattering parameters of a multiport apparatus with non-sinusoidal measurement signals

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] figure 1 shows a circuit diagram of a conventional vector network analyzer with two measurement ports P1 and P2, to which a frequency-varying high-frequency measurement signal supplied by a generator G can be selectively connected via a converter U . The directional coupler R1 is installed in a measurement branch I through which a measurement signal m1 corresponding to the forward moving waveform parameter a1 and a measurement signal m2 corresponding to the returning waveform parameter b1 can be measured. By means of the directional coupler R2 in the second measurement branch II, a measurement signal m3 corresponding to the wave b2 leaving the device X under test and a measurement signal m4 corresponding to the wave a2 transmitted to the device X under test can be measured. The measurement signals m1 to m4 are supplied via the measurement channels K1 to K4 to the evaluation device A of the network analyzer, in which these measurement signals are scanned by e.g. analog / ...

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 object of the present invention is to measure the number of wavelengths of a multiport test target by means of a multiport network analyzer used to determine error correction values ​​in the preceding calibration method. To this end, the invention provides the following method: when non-sinusoidal signals are used, the time differences between the wavelength-quantity measurement signals are first calculated and then compensated for by correction factors derived therefrom. Uncorrected scatter parameters are then calculated from these time-compensated measurement signals, and the scatter parameters are corrected using the error correction values ​​of the calibration method.

Description

technical field [0001] The invention relates to a method according to the preambles of the independent claims. Background technique [0002] The characteristics of single-port or multi-port circuits are determined by their scattering parameters. These scattering parameters are the quotients of the input and output waveform parameters at the circuit ports and can be measured by a scalar or vector network analyzer. Such network analyzers usually work with sinusoidal measurement signals. In order to reduce the measurement error caused by the non-ideal characteristics of the measurement port, this type of network analyzer must be calibrated before the actual measurement of the device. To this end, various calibration standards (calibration standards), such as break, pass, match or short, are connected to the measurement ports of the network analyzer. Error correction values ​​to be considered in subsequent measurements of the device can thus be determined from these calibrati...

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): G01R35/00G01R27/28
CPCG01R27/28G01R35/005G01R35/00
Inventor 罗兰德·米尼霍德马丁·威斯西劳·贝得诺兹汉森-乔治姆·塞莫阿尔伯特·温特
Owner ROHDE & SCHWARZ GMBH & CO KG