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ULg - EMC Lab Barcelona - JTA11 JTA1 Antenna-wire coupling in the near field Measurement results from ULg Ir. V. Beauvois ; Ir. M. Renard ; P. Beerten.

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Presentation on theme: "ULg - EMC Lab Barcelona - JTA11 JTA1 Antenna-wire coupling in the near field Measurement results from ULg Ir. V. Beauvois ; Ir. M. Renard ; P. Beerten."— Presentation transcript:

1 ULg - EMC Lab Barcelona - JTA11 JTA1 Antenna-wire coupling in the near field Measurement results from ULg Ir. V. Beauvois ; Ir. M. Renard ; P. Beerten

2 ULg - EMC Lab Barcelona - JTA12 3 m 1, 5, 10 m l 1m 5 30/80 cm 150 GND plane 12 m -30cm -> l +30cm x = 5 cm 1 m 1,5 m V 10 cm H Original problem

3 ULg - EMC Lab Barcelona - JTA13

4 4 V 10 cm H // H Position of the antenna used for simulation of a GSM phone

5 ULg - EMC Lab Barcelona - JTA15 - Wire Ø 1.78mm (2.5mm²) instead of 2mm ; - Equipments : - Generator SMY02 R&S at 13dBm 900MHz - EMI Receiver ESI26 R&S - RBW : 120kHz - m.t. : 1s - CR100 (100 ) - Coaxial cables - GSM Antenna Kathrein ref. K brass rod in plastic tube - Dipole (for reference) HZ-13 R&S tuned for 900MHz

6 ULg - EMC Lab Barcelona - JTA16 1m cable 100 Ground plane Cable to spectrum 50 input

7 ULg - EMC Lab Barcelona - JTA17 5m cable

8 ULg - EMC Lab Barcelona - JTA18

9 9

10 10 Measurement conditions : 1m cable 5cm, 10cm, 15cm, 20cm, 25cm, 30cm, 50cm, 80cm 5m cable 5cm, 10cm, 15cm, 30cm, 50cm, 80cm (time consuming) Longer cable : ground plane limit

11 ULg - EMC Lab Barcelona - JTA111

12 ULg - EMC Lab Barcelona - JTA112

13 ULg - EMC Lab Barcelona - JTA113

14 ULg - EMC Lab Barcelona - JTA114

15 ULg - EMC Lab Barcelona - JTA115

16 ULg - EMC Lab Barcelona - JTA116

17 ULg - EMC Lab Barcelona - JTA117

18 ULg - EMC Lab Barcelona - JTA118 dipole

19 ULg - EMC Lab Barcelona - JTA119 *Some uncertainties : to be checked linked to cable attenuations

20 ULg - EMC Lab Barcelona - JTA120 Still to be done: to check some measurements to check the values (cable attenuation) to compare our values with other measurements simulations influence of site (open site, anechoic room, metal plate in environment)


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