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ME1310 Antenna and
Propagation (3D)

Lab 1 - 4/18

Antenna radiation pattern measurement should take place in the far-field region. The distance between
both antennas,

r

, must be large enough so that the antennas are in the far-field region where,



2

2

D

r





= wavelength, and

D

= largest dimension of the antenna under test (AUT)

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Summary of Contents for ME1310

Page 1: ...cehub Vista Sdn Bhd are subject to the applicable License Agreement For further information see the Courseware Product License Agreement Objective i To understand the operating fundamentals of 3D radiation pattern measurements ii To measure and plot antenna radiation patterns Equipment Required i ME1310 training kit ii Keysight N9912A FieldFox RF analyzer iii Keysight 85033E standard mechanical ca...

Page 2: ...Dipole Antenna Measurement 5 2 2 2400 MHz Dipole Antenna 3D Radiation Pattern Measurement 8 3 Discussions 12 Appendix A Antenna Pattern for 2400 MHz Dipole Antenna vs 2400 MHz Dipole Antenna Vertical Polarize 13 Appendix B Tips on How to Calibrate the Keysight N9912A FieldFox RF Analyzer 15 S11 Calibration 15 S21 Calibration 16 Revision History 17 Contact Us 18 ...

Page 3: ...on pattern will be plotted if both antennas are placed vertically while its E plane antenna radiation pattern will be plotted if both antennas are placed horizontally The E plane radiation pattern is defined as the plane containing the electric field vector and the direction of maximum radiation and the H plane radiation pattern is defined as the plane containing the magnetic field vector and the ...

Page 4: ... 18 Antenna radiation pattern measurement should take place in the far field region The distance between both antennas r must be large enough so that the antennas are in the far field region where 2 2D r wavelength and D largest dimension of the antenna under test AUT ...

Page 5: ...Figure 2 Equipment setup 1 Set up the equipment as shown in Figure 2 2 Two 2400 MHz 2 dipole antennas are used for the measurement Mount one of the dipole antennas on the top connector of the fixed antenna holder on the transmitter module Tx This is the transmitting antenna Orientate the antenna for vertical polarization and broadside to the other antenna under test AUT The orientation of the tran...

Page 6: ...dule Rx This is the receiving antenna 5 Adjust the RX pole s horizontal distance make sure the pcb antenna is align to the RX pole Figure 3 RX Module 6 Orientate the receiving antenna broadside to the transmitting antenna as shown in Figure for vertical polarization and maximum reception Figure 4 Orientation of receiving and transmitting antennas for vertical polarization 50 cm AUT Rx Tx ...

Page 7: ...nterface and the main panel will be enabled Figure 5 Main panel 18 Click 2D Radiation Pattern set the Step Size under the Rotator Control panel to 10 Deg Step and set the Range Scan from 0 to 350 degrees 19 Click Play on the main panel to begin plotting the antenna radiation pattern 20 After the plotting finished click Add under the Marker panel to add a marker You should see a new entry of Marker...

Page 8: ... 3D Radiation Pattern Measurement 1 Set up the equipment as shown in Figure below Figure 6 Antenna orientation for 3D radiation pattern measurement 2 In the RadPat v4 software select 3D Radiation Pattern and then configure the Step Size under the Rotator Control panel to 10 Deg Step 50 cm AUT Rx Tx ...

Page 9: ...ment The ME1310 Rx unit will first rotate to 90 degrees and the AUT radiation pattern measurement at 0 degrees will then begin Figure 7 Initial angle of AUT 4 Once the measurement is completed rotate the antenna to 10 degrees by adjusting the knob as shown in Figure 8 Figure 8 AUT Angle rotated to 10 degrees 5 Click Next in the pop up window shown in Figure 9 and the ME1310 Rx unit will first rota...

Page 10: ...d directory 7 Click Ok Then click Clear All to remove the measurement data 8 Change the orientation of the 2400 MHz 2 dipole antenna on the transmitter module TX to Horizontal position as shown in Figure 10 Figure 10 Antenna orientation for 3D radiation pattern measurement 9 Repeat step 3 to step 7 10 In the RadPat v4 software select 3D Plot as shown in Figure 11 Figure 11 3D Plot function for plo...

Page 11: ...indow shown in Figure 12 select the directory where the H Plane and V Plane 3D radiation patterns measurement data are located Set a suitable dB Range for the 3D plot for example 30 dB and then click OK Figure 12 3D Radiation pattern plot menu 12 Record the plotted 3D radiation pattern in Appendix A ...

Page 12: ...nna performance evaluation 2 Based on the measured 3D antenna radiation pattern sketch the E plane and H plane of the dipole antenna radiation pattern Briefly discuss the differences between the two plots 3 Antenna radiation pattern measurements are to be measured in an anechoic chamber to achieve high accuracy Discuss what could be the source errors if antenna radiation pattern is not measured in...

Page 13: ...http dreamcatcher asia cw ME1310 Antenna and Propagation 3D Lab 1 13 18 Appendix A Antenna Pattern for 2400 MHz Dipole Antenna vs 2400 MHz Dipole Antenna Vertical Polarize ...

Page 14: ...http dreamcatcher asia cw ME1310 Antenna and Propagation 3D Lab 1 14 18 3D Antenna Radiation Pattern for 2400 MHz Dipole Antenna vs 2400 MHz Dipole Antenna Sample 3D Record Data 3D Record 2400 MHz zip ...

Page 15: ...l Use the softkeys to select O S L for the Calibration Type 4 Select Start Cal and press the corresponding softkey Open F 5 Connect the OPEN CIRCUIT calibration kit to the SMA connector and press Measure 6 Upon completing the measure press the corresponding softkey Short F 7 Connect the SHORT CIRCUIT calibration kit to the SMA connector and press Measure 8 Upon completing the measure press the cor...

Page 16: ...he softkey to select NA and then select S21 3 Press Cal button 5 on the N9912A front panel Use the softkey to select Normalize 4 Then select Thru 5 Select Measure after completing the setup 6 Upon the completion of Step 5 press Finish to complete the Norminal calibration The calibration can be repeated again at any time in the event that the calibration kit was not properly connected during the ca...

Page 17: ...criptions 1 00 Initial document 1 01 Revised Section 2 2 3D Radiation Procedures 1 02 Revised Section 2 1 2 2 figures and procedures Changed antenna to 2400 MHz dipole antenna 1 03 1 Changed equipment setup diagram Figure 2 for more clarity 2 Change the setup photo for Figure 4 6 and 10 for more clarity ...

Page 18: ...anical photocopying recording or otherwise without prior written permission of Acehub Vista Sdn Bhd Every effort has been made to ensure that the information in this manual is accurate Acehub Vista Sdn Bhd is not responsible for printing or clerical errors Trademark Acknowledgements DreamCatcherTM is the trademark of Dream Catcher Consulting Sdn Bhd Microsoft and Windows are trademarks of Microsof...

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