LAPLACE INSTRUMENTS RF200 User Manual

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[Page 1] LAPLACE INSTRUMENTS RF200

RF200 Antenna User Manual Version 3.0 January 2004 LAPLACE INSTRUMENTS LTD 3B, Middlebrook Way CROMER Norfolk NR27 9JR UK Tel: 012 63 51 51 60 Fax: 012 63 51 25 32 ...

[Page 2] LAPLACE INSTRUMENTS RF200

RF200/500 user manual 2 Index 1.0 Introduction Page 3 Background 2.0 RF200 broadband antenna Page 4 Assembly Page 4 In use Page 6 Antenna Factor Page 7 3.0 Ground Plane...

[Page 3] LAPLACE INSTRUMENTS RF200

RF200/500 user manual 3 1.0 Introduction 1.1 Antenna Background For measurement of field strength (far field emission level) an antenna is required which will act as a transducer, converting field strength (mV/m) to mV signals output ...

[Page 4] LAPLACE INSTRUMENTS RF200

RF200/500 user manual 4 2.0 RF200 Broadband antenna The broadband antenna will allow the user to detect and measure radiation over the frequency range 30MHz to 1GHz. This is shipped in a ‘knocked-down’ form to ease packaging and to...

[Page 5] LAPLACE INSTRUMENTS RF200

RF200/500 user manual 5 Fig 1 RF200 Assembly RF200 Stand assembly ...

[Page 6] LAPLACE INSTRUMENTS RF200

RF200/500 user manual 6 Fig 2 RF200 stand This is supplied as a central vertical support fitted with a leg attachment moulding and three legs. The legs are a push fit into the leg attachment moulding. The vertical support has a friction...

[Page 7] LAPLACE INSTRUMENTS RF200

RF200/500 user manual 7 2.3 Antenna Factor The sensitivity of any antenna will vary with frequency. i.e. it will be more sensitive at some frequencies and less sensitive at others. A plot of sensitivity vs frequency is called the Antenna F...

[Page 8] LAPLACE INSTRUMENTS RF200

RF200/500 user manual 8 Antenna Factor tabular data Freq(MHz) A.F. (dB/m) 30 0 40 -1 50 -2 60 -3 70 -5 80 -7 100 -9 120 -9 140 -8 160 -7 180 -6 200 -5 Freq(MHz) A.F. (dB/m) 220 -3 ...

[Page 9] LAPLACE INSTRUMENTS RF200

RF200/500 user manual 9 1.00 1.10 1.20 1.30 1.40 1.50 1.60 1.70 1.80 1.90 2.00 2.10 2.20 2.30 2.40 2.50 2.60 2.70 2.80 2.90 3.00 3.20 3.40 3.60 3.80 4.00 4.20 4.40 4.60 50 100 150 200 250 300 350 400 450 500 550 600 650 700 750 800 850 900 950 100...

[Page 10] LAPLACE INSTRUMENTS RF200

RF200/500 user manual 10 If using a an open field test site, this should also be calibrated. The ground plane reflection alone can have a significant effect on the test results. To calibrate a site, a known source should be used. Laplace can su...

[Page 11] LAPLACE INSTRUMENTS RF200

RF200/500 user manual 11 LAPLACE INSTRUMENTS LTD 3B, Middlebrook Way Cromer Norfolk NR27 9JR Tel: +44 (0) 12 63 51 51 60 Fax: +44 (0) 12 63 51 25 32 E: [email protected] Web: www.laplaceinstruments.com ...