Calibration of Home made H-field small loop antenna probes (EMC) - Page 1
Forum section: electronics / projects

author: Rebelnation
author_rank: Newbie
timestamp: March 17, 2014, 11:44:57 am
content: Hey everyone,I would really like to know how do i calibrate home made h-field probes with small loop receiving antenna in using equipment in university engineering lab?If possible, please provide me the methods, tips and useful links.Your help is greatly appreciated!!P.S: i seriously need help in this guys !

author: Rebelnation
author_rank: Newbie
timestamp: March 17, 2014, 12:57:51 pm
content: Come on guys..seriously need some help about this topic

author: hagster
author_rank: Frequent Contributor
timestamp: March 17, 2014, 01:26:32 pm
content: On an antenna range.http://www.npl.co.uk/publications/calibration-and-use-of-antennas,-focusing-on-emc-applications.

author: robrenz
author_rank: Super Contributor
timestamp: March 17, 2014, 01:28:55 pm
content: You will get more response by showing you have done some research yourself FIRST. Then ask for clarification on something you don't understand. Most here frown on doing homework for people.

author: Rebelnation
author_rank: Newbie
timestamp: March 17, 2014, 01:44:26 pm
content: Quote from: hagster on March 17, 2014, 01:26:32 pmThanks for the infowill check itQuote from: robrenz on March 17, 2014, 01:28:55 pmI apologize for my selfishness. I did some research actually. i found those antenna factor method, 3 antenna method, impedance matching method and some on the calibration methods for emc IEEE documents but i do not know which to use as i think most of it is being used by calibration companies all around the world as they possessed the suitable equipment to do it. i just want to know if there are other methods can be used in a by normal people like us with normal equipment such as spectrum analyzer, oscilloscope and such.I heard that using straight line method (y=mx + b) calibration technique is possible for this kind of situation. it is true?Regards

author: Rebelnation
author_rank: Newbie
timestamp: March 17, 2014, 01:58:09 pm
content: yeah, another thing is:I cannot clearly understand between this two types:a)IEEE Standard for Calibration ofElectromagnetic Field Sensors andProbes (Excluding Antennas) from9 kHz to 40 GHzandb) American National Standard forElectromagnetic Compatibility–RadiatedEmission Measurements in ElectromagneticInterference (EMI) Control–Calibration ofAntennas (9 kHz to 40 GHz)Both of this are very similar but also confusing like one without antenna and one with sensors and probes. The home made h-field probe have small loop receiving antenna and it is also a probe, so which is which?. they even explained that probe/sensors and antenna are different thing and requires different methods.The y= mx + b method is possible i heard but i cannot find much information on the net. any ideas on this ?Can anyone explain a little about this?thanks those who help

author: robrenz
author_rank: Super Contributor
timestamp: March 17, 2014, 02:41:05 pm
content: My comment may have come across as mean spirited but I was just trying to help you get some input. This is out of my league so I am no help

author: Conrad Hoffman
author_rank: Super Contributor
timestamp: March 17, 2014, 04:56:32 pm
content: Don't know the frequency, but can it be done with a helmholtz coil- easy to build and calibrated by the dimensions?