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Hunan Greber Electronic Technology Co., Ltd
VNA-P Vector Network Analyzer
NegotiableUpdate on 05/15
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Overview
The frequency range of VNA-P network analyzer is 100KHz~67GHz, which can cover the testing requirements of C/X/Ku/K/Ka/U band microwave products. Applied to research and development, production testing, and other fields such as microwave communication, satellite communication, and aerospace industry. Paired with a 12.1-inch touch screen and physical function buttons, it facilitates various debugging operations for customers. Equipped with comprehensive testing and analysis functions as well as calibration algorithms, it supports various fixture simulation algorithms such as end port matching and IFD. It also supports time-domain analysis and eye diagram testing, and achieves higher frequency millimeter wave band expansion through external spread spectrum modules
Product Details
Automatic fixture removal efficiently solves the testing problem of non-standard joint components
Enhance the effectiveness of TDR eye diagram testing
Excellent dynamic range: 120dB@67GHz (typ.)
Ultra low trace noise: 5mdB rms (typ.) @ IFBW=70kHz
VANCore function and measurement parameters
The core function of VNA is to comprehensively characterize the characteristics of the device under test (DUT) by emitting known and controllable frequency scanning signals to the DUT, and then accurately measuring the reflected and transmitted signals.
It mainly measures the following four key parameters:
(1).Reflection parameters（S11, S22 in the S parameter - measures whether the signal is effectively accepted or consumed
S11 (input reflection coefficient): measures how much of the signal entering from port 1 is reflected back. This is directly related to:
Return loss: How much is the reflected signal lost, and the larger the value, the better.
Standing wave ratio: Measure the degree of impedance matching, the closer it is to1 is better.
Input impedance: It can be directly calculated.
（2）.Transmission parameters（S21, S12 in the S parameter - measures the changes in the signal after passing through the device
S21 (forward transmission coefficient): measures the transmission of signals from port 1 to port 2. This is directly related to:
gain/Insertion loss: The amplifier has gain (positive value), while the filter and cable have insertion loss (negative value).
Phase offset: How much did the phase change after the signal passed through.
Group latency: The rate of change of phase with frequency is crucial for digital signal transmission.
S12 (Reverse Transmission Coefficient): measures the isolation of a signal, such as the reverse isolation of an amplifier
Main application areas
Based on the above measurement capabilities,VNA plays a crucial role in the following areas:
（3）.Antenna design and testing:
Measure the standing wave ratio of the antenna（VSWR and return loss ensure that it can effectively radiate energy rather than reflect back.
Measure the input impedance of the antenna for designing matching circuits.
（4）.Passive components such as filters, duplexers, power dividers, etc.:
Measure insertion loss, out of band suppression, and passband flatness And phase linearity.
（5）.Active components such as amplifiers and mixers:
Measure gain, gain flatness, and compression point（P1dB）、 Third order intermodulation (TOI) and reverse isolation.
（6）.Cables and connectors:
Measure insertion loss and phase stability And latency.
Evaluate the quality of connectors and the uniformity of cables.
（7）.Material characterization:
By measuring the material in a specific fixtureThe S parameter can be used to deduce the dielectric constant and magnetic permeability of the material.
(8).Radar cross section（RCS measurement:
In the darkroom, throughVNA measures the reflection characteristics of target objects towards electromagnetic waves.
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