Planar Near Field Test System

The planar near-field test system mainly consists of high-frequency vector network analyzer, scanning frame, amplifier and AUT bracket.

1. Technical indicators

Shielding effectiveness: 0.6 ~ 18 GHz 105 dB, 18 ~ 40 GHz 95 dB
Test frequency range: 0.6 ~ 40 GHz
Dynamic range: 70 dB
Maximum weight of the object to be tested: 200 kg
Probe cross-polarization: better than 40 dB (after calibration)
Quiet zone reflection level: ≤-25 dB@0.8 GHz ~ 1 GHz, ≤-30 dB@1 GHz ~ 2 GHz, ≤-35 dB@2 GHz ~ 6 GHz, ≤-40 dB@6 GHz ~ 10 GHz, ≤-50 dB@10 GHz ~ 40 GHz

2. Core equipment

High Frequency Vector Network Analyzer

Host frequency range: ≥10 MHz~50 GHz; frequency range of spread spectrum module: 50 GHz~110 GHz

Sample Requirements

Frequency range: 0.6~40 GHz
Dynamic range: 70 dB
The maximum weight of the measured object is 200 kg.

Application

For testing parameters such as antenna gain, pattern, lobe width, axial ratio, front-to-back ratio, and cross-polarization ratio
Suitable for testing of phased arrays, radar antennas, etc.

Instrument and Result Display

Planar Near Field Test System

FAQ

Q1. In the vector network data, what data is the TXT given?

A. S parameters (where r represents the real part and i represents the imaginary part).

Q2. In a vector network analyzer, what data can only be given by the bow method?

A. Only absorbance reflectance can be given.

Q3. If you want to use powder to measure the coaxial, if you want to add paraffin, is there a reference value?

A. If there is no reference, you can only measure 1:1, and then adjust the concentration according to the data. It is best to check the literature to understand.

Q4. In the vector network analyzer, what is the direct calculation of electromagnetic shielding?

A. S parameters.