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K-TS1 датащи(PDF) 10 Page - RFbeam Microwave GmbH |
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K-TS1 датащи(HTML) 10 Page - RFbeam Microwave GmbH |
10 / 13 page K-TS1 RADAR TESTSYSTEM Datasheet Application Notes Typical Arrangement The unit under test (UUT) is placed in front of the K-TS1 module with a distance of >30cm (in the farfield). For frequency measurements, it is not necessary to shield the whole arrangement. For power measurements, you should at least place a piece of K-band absorber on the groundplane (a wooden table is best). Most reliable results you get, if there is much free room around the setting, or you place the whole arrangement into a (wooden) chamber. Pay attention to place the UUT in the correct polarization direction. Check this by rotating the UUT by 90° into the position, where K-TS1 shows maximum power. Fig. 11: Typical arrangement of a test-stand Determinating UUT Tx Power (EIRP) K-TS1 shows effective power arriving at its Rx antenna. To determine the effective radiated power by the UUT, we have to respect the attenuation of power over the distance d according to Fig. 12. Example: UUT distance d = 30cm. K-TS1 is set to display power in loop mode ('l=1'). Reading from K-TS1: -35.3dBm Adding path loss from Fig. 12: + 50dB --------------- --> Radiated EIRP from UUT: + 14.7dBm (=30mW) Fig. 12: Power attenuation over distance @24GHz © RFbeam Microwave GmbH www.rfbeam.ch 2011-03-11 Page 10/13 40 50 60 70 0.1 0.3 0.5 0.7 0.9 1.1 1.3 1.5 Distance [m] D = 32.44dB + 20*log f + 20*log d 15VDC d > 0.3m UUT (Transceiver) K-TS1 Absorber USB Table |
Аналогичное описание - K-TS1 |
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