Top X Technology Co., Ltd
Email: rfproducts1@ctrfantennas.com
C&T RF Antennas Inc
Network Analyzer
Source:Original | Author:C&T RF Antennas Inc | Publish time: 2018-01-20 | 619 Views | Share:

Network Analyzer
Network analyzer is a new type of instrument for measuring network parameters. It can directly measure the complex scattering parameters of active or passive, reversible or irreversible dual-port and single-port networks, and gives the amplitude and phase of each scattering parameter Frequency characteristics. Network analyzers are based on four-port microwave reflectometers (see Standing Wave and Reflectometry). In the mid-1960s automation, the use of computers by a certain error model at each frequency point to correct the directional coupler imperfection, mismatch and blowby caused by the error, so that the measurement accuracy is greatly improved, The measurement accuracy of the most accurate measurement line technology in the metering chamber can be achieved, while the measurement speed is increased by several tens of times.

 

Introduction

Vector network analyzer, which comes with a signal generator that can scan a frequency band frequency.If the single-port measurement, the excitation signal is added to the port, by measuring the amplitude and phase of the reflected signal back, you can Determine the impedance or reflex situation.For the two-port measurement, you can also measure the transmission parameters.Because of the distribution of parameters such as obvious, so the network analyzer must be calibrated before use.

 

Development process

Network analyzers are based on four-port microwave reflectometers (see Standing Wave and Reflectometry). In the mid-1960s automation, the use of computers by a certain error model at each frequency point to correct the directional coupler imperfection, mismatch and blowby caused by the error, so that the measurement accuracy is greatly improved, The measurement accuracy of the most accurate measurement line technology in the metering chamber can be achieved, while the measurement speed is increased by several tens of times.

 

Parameter

The parameters (scattering parameters) are used to evaluate the performance of the DUT reflected signal and the transmitted signal. The parameter is defined by the ratio of two complex numbers and contains information about the amplitude and phase of the signal. The parameters are usually expressed as: