Hi Bob, Reference document for dipole antenna is CISPR 16-1:1993-08 Specification for radio disturbance and immunity measuring apparatus and methods. Antennas, including shortened dipole are defined in Section 15. Generic shorten dipole antenna factors are on Figure 13. You should calibrate your antenna at 80 MHz length and use factors specific for your shortened dipole antenna.
Regards, Mirko ---------- From: [email protected] To: [email protected] Subject: Dipole antenna factors below 80 MHz List-Post: [email protected] Date: Friday, April 11, 1997 1:05PM Greetings, When making field strength measurements below 80 MHz, CISPR 22 says to tune the antenna to the 80 MHz resonant length. Should the antenna be calibrated at these frequencies with the 80MHz resonant length? Or does one use the antenna factors that were presumably derived using the actual resonant length? I can find no guidance in published standards on this subject. Thanks in advance, Bob Sykes EMC Engineer Gilbarco Inc. [email protected]
