FYS3000B Three centimeter Microwave Testing System

1 FYS3000BOverview of Three centimeter Waveguide Testing System:

The FYS3000B three centimeter microwave testing system (three centimeter waveguide training system) is a radio frequency/microwave experimental system launched by our company after FYSBD20. The FYS3000B three centimeter microwave testing system (three centimeter waveguide training system) is a three centimeter waveguide experimental system.

As is well known, RF/Microwave transmission lines can be divided into two categories according to their working wave types;

One type isThe main feature of TEM wave transmission line is that there is no field strength component along the transmission direction, the phase velocity is a constant, independent of the working wavelength, and there is no critical wavelength limitation. It can transmit at any wavelength. There are coaxial lines, microstrip lines, and striplines that belong to this category.

The other type is dispersion wave transmission line, which is mainly characterized by a field strength component along the transmission direction. Generally speaking, this type of transmission line has a critical wavelength. If the operating wavelength is greater than the critical wavelength, the radio wave cannot be transmitted. This category includes rectangular waveguides, circular waveguides, and other commonly used rectangular waveguides with basic structural dimensions ofThe rectangular cross-section of a × b generally has a length greater than several wavelengths.

The cross-sectional geometric dimensions of a rectangular waveguide are determined by the operating wavelength, and the wave mode transmitted by the rectangular waveguide isTE10 wave, a dispersive wave transmitted within a waveguide, with a waveguide wavelength longer than that of a free space waveλg＝λ/[1-(λ/2a)² ]^1/2.

The principle for selecting the size of rectangular waveguide is: only the main mode transmission; Having sufficient power capacity; Low loss; Usually taken as:

a=0.7 λ，b=a/2。

The national standard for three centimeter waveguide is:JB-100； The flange standard is: FJB-100。

A=22.86mm b=10.16mm Wall thickness t=1.0mm

Working frequency:8.2-12.4GHz, cut-off frequency: 6.557 GHz

IIFYS3000BThree centimeter waveguide trainingsystemmain features

At present, there are many manufacturers in China that produce three centimeter microwave experimental systems. The structural form and technology of these three centimeter microwave experimental systems are basically the same. Our company has also produced them in the pastThe FYS3000B microwave experimental system has completely changed the previous design ideas and packaging methods,FYS3000B Three centimeter Microwave Testing System (Three centimeter Waveguide Training System)The main features are as follows:

1. The frequency meter adopts an absorption resonant cavity, with high Q value, good hand feel, and high accuracy;

2. The variable attenuator adopts a direct reading type, which is reliable and convenient;

3. The measurement line adopts waveguide Sliding structure without tuning mechanism Sliding distance>60mm;

4. Portable packaging

The FYS3000B three centimeter microwave testing system (three centimeter waveguide training system) is suitable for use in universities, research institutions, microwave communication, radar stations, etc. It has the characteristics of compact structure, complete equipment, and high cost-effectiveness.

IIIFYS3000BThree centimeter waveguide trainingMain technical performance of the system

FYS3000BThe microwave experimental system includes: microwave signal source, frequency meter, power meter, frequency selective amplifier, variable attenuator, directional coupler, magicT、 Horn antenna, measuring line, sliding screw tuner, crystal detector, matched load, waveguide/coaxial converter, short-circuit board, reflector board, straight waveguide, etc Its main technical performance is as follows:（Refer to the technical manual）

4FYS3000BBlock diagram of waveguide testing system module combination

5Experimental content:

experiment1: Modulator and crystal detector

experiment3: Propagation types, wavelengths, and phase velocities within waveguides

experiment4: Q value and bandwidth of resonant cavity

experiment4: Q value and bandwidth of resonant cavity

experiment5: Power measurement

experiment6: Standing wave measurement

experiment7: Impedance measurement

experiment8: Basic characteristics of directional couplers

experiment9: Attenuation measurement

experiment10: Research on Mo-T waveguide

VIFYS3000BThree centimetersStandard configuration of waveguide testing system:(Specific configuration for ordering can be adjusted as needed)

1.Microwave signal source

2.Microwave power meter

3.Selective frequency amplifier

4.List of accessories for waveguide components: