ESCO Technologies ETS-Lindgren 3147, User Manual

Page 1: ...Model 3147 Log Periodic Dipole Antenna User Manual...

Page 2: ...en L P All Rights Reserved No part of this document may be copied by any means without written permission from ETS Lindgren L P Trademarks used in this document The ETS Lindgren logo is a trademark of...

Page 3: ...tional Mounting Options 17 4 TR Mounting Options 17 7 TR and Mast Mounting Options 18 2x2 Boom Mounting Options 19 5 0 Operation 21 Model 3147 Assembly Instructions 21 Model 3147 Use 21 6 0 Typical Da...

Page 4: ...iv 400 MHz 41 500 MHz 41 600 MHz 42 700 MHz 42 800 MHz 43 900 MHz 43 1 0 GHz 44 1 5 GHz 44 2 0 GHz 45 2 5 GHz 45 3 0 GHz 46 3 5 GHz 46 4 0 GHz 47 4 5 GHz 47 5 0 GHz 48 Appendix B Warranty 49...

Page 5: ...ions could result in minor personal injury and or property damage Included text gives proper procedures Warning Denotes a hazard Failure to follow instructions could result in SEVERE personal injury a...

Page 6: ...vi This page intentionally left blank...

Page 7: ...ge 24 The precise design of the feed and the positioning of the elements on the boom yield an optimum phase relationship This causes the active region at any given frequency to propagate RF energy tow...

Page 8: ...f the log periodic antennas Optionally the log periodic antenna can be calibrated per SAE ARP 958 Society of Automotive Engineers Aerospace Recommended Practice The SAR APR 958 requires an antenna spa...

Page 9: ...Introduction 9...

Page 10: ...10 Introduction This page intentionally left blank...

Page 11: ...periodic removal of the antenna cable connection and cleaning of any corrosion may be needed to maintain accuracy of the measurements An inspection to determine the need for cleaning should be made a...

Page 12: ...12 Maintenance This page intentionally left blank...

Page 13: ...R Average 1 25 1 Maximum 1 7 1 Impedance 50 Maximum Continuous Input Power 80 W at 1 GHz 40 W at 5 GHz Maximum Peak Input Power 100 W at 1 GHz 50 W at 5 GHz Connector Precision N female Physical Speci...

Page 14: ...14 Specifications This page intentionally left blank...

Page 15: ...Model 3147 is a precision measurement device Handle with care Using Included Mounting Adapters The Model 3147 Log Periodic Dipole Antenna ships with these mounting adapters 100989 Polarizing Mounting...

Page 16: ...required insert the 1 4 20 thread insert into the polarizing adapter 2 Remove the mounting knob from the mounting bracket on the antenna 3 Slide the polarizing adapter into the mounting bracket by pla...

Page 17: ...the adapter could occur 5 Tighten the mounting knob to secure the antenna 6 Attach the polarizing adapter and antenna to tripod or tower as required Additional Mounting Options 4 TR MOUNTING OPTIONS...

Page 18: ...partment for information on ordering optional mounting hardware Mast refers to 2070 Series 2075 and 2175 Antenna Towers 7 TR refers to 109042 108983 and 108507 booms 109042 boom Straight boom for gene...

Page 19: ...TING OPTIONS Following are additional options for mounting the Model 3147 onto a 2x2 boom Contact the ETS Lindgren Sales Department for information on ordering optional mounting hardware 2x2 boom refe...

Page 20: ...20 Mounting Instructions This page intentionally left blank...

Page 21: ...the support rod and base onto a tripod and then tighten the 1 4 20 screw in the bottom of the base 5 Remove the red connector cover from the precision N connector 6 Attach a cable to the precision N c...

Page 22: ...22 Operation This page intentionally left blank...

Page 23: ...Typical Data 23 6 0 Typical Data Following are typical measurements for the Model 3147 Log Periodic Dipole Antenna...

Page 24: ...4 Typical Data Typical VSWR for Model 3147 This is a plot of the VSWR showing the antenna with and without a radome The effect of the radome on the electromagnetic performance of the antenna is minima...

Page 25: ...Typical Data 25 Typical Antenna Factor and Gain for Model 3147...

Page 26: ...26 Typical Data...

Page 27: ...nnas is measured from the projection onto the ground plane of the midpoint of the longitudinal axis of each antenna This midpoint has been marked on the radome and labeled Reference Point Per ANSI C63...

Page 28: ...Beamwidth for Horizontally and Vertically Polarized Model 3147 The beamwidth charts show the 3 dB and 10 dB power beamwidth as determined from the antenna patterns taken for both horizontal and vertic...

Page 29: ...Typical Data 29...

Page 30: ...30 Typical Data...

Page 31: ...ade by first positioning two identical Model 3147 antennas face to face at a 2 meter height and a 3 meter distance A signal is transmitted through one antenna and received with the other The transmitt...

Page 32: ...32 Typical Data...

Page 33: ...Typical Data 33 Cable Attenuation dB at 20 C for 6 M Cable...

Page 34: ...s are located in Appendix A on page 41 These patterns were measured indoors using a separation distance of 1 meter to 1 5 meters between the transmit antenna and the receive antenna The antenna patter...

Page 35: ...receiving system input impedance will require correction for the differences in input impedance 4 Select the desired frequency of measurement on the receiving system 5 Measure the RF voltage Va refere...

Page 36: ...Voltage dB V Cable Loss dB Antenna Factor dB m 1 Field Strength dB V m Ea Va AF Ae Conversion Factors Following are some useful conversion formulas dBm dB V 107 dB mW m2 dB V m 115 8 dB V m dB V AF V...

Page 37: ...the appropriate conversion factors to convert dB W m2 to dB mW m2 for power density and dB V m to dB V m for the electric field the constant becomes 30 120 10 log10 120 115 8 For the constant in the...

Page 38: ...38 Radiated Emissions Measurement This page intentionally left blank...

Page 39: ...where E is the field strength in V m R is the distance from the transmit antenna g is the antenna gain in linear unit The power limitation is 80 Watts maximum continuous power for frequencies below 1...

Page 40: ...40 Power Requirements This page intentionally left blank...

Page 41: ...Typical Antenna Patterns 41 Appendix A Typical Antenna Patterns 400 MHZ 500 MHZ...

Page 42: ...42 Typical Antenna Patterns 600 MHZ 700 MHZ...

Page 43: ...Typical Antenna Patterns 43 800 MHZ 900 MHZ...

Page 44: ...44 Typical Antenna Patterns 1 0 GHZ 1 5 GHZ...

Page 45: ...Typical Antenna Patterns 45 2 0 GHZ 2 5 GHZ...

Page 46: ...46 Typical Antenna Patterns 3 0 GHZ 3 5 GHZ...

Page 47: ...Typical Antenna Patterns 47 4 0 GHZ 4 5 GHZ...

Page 48: ...48 Typical Antenna Patterns 5 0 GHZ...

Page 49: ...TS Lindgren warranty for your Model 3147 Log Periodic Dipole Antenna DURATION OF WARRANTIES FOR MODEL 3147 All product warranties except the warranty of title and all remedies for warranty failures ar...