SARK
SARK
SARK
SARK-
-
-
-110
110
110
110
User’s Manual
Rev 1.2.6 October 3
rd
, 2015
- 55 -
© Melchor Varela – EA4FRB 2011-2015
14 Circuit Models
The SARK-110 provides advanced analysis features, including the automatic determination of
the circuit models of small loop antennas or coils, capacitors and quartz crystals. It is also
capable of automatically determining different parameters having to do with transmission lines.
It is essential that the analyzer is calibrated before each measurement for accurate results when
using these functions. The open, short and load calibration loads have to be connected to the
end of the test port extension cable being employed. Please refer to Appendix D on how to carry
out the steps for OSL calibration.
The measurement results can be saved in a file in tabular format or as a screenshot.
The Circuit Models function is only available in the Single Frequency Mode. Select «Mode»
«Single Frequency» to change to the Single Frequency mode. Then select «CModel» in the
main menu and the desired function in the pop-up submenu.
14.1 Loop Antenna/Coil
This function determines the equivalent circuit model of small loop antennas or coils. This
function is specially tailored for the measurement of antennas for HF RFID applications. Detailed
usage
of
this
function
is
described
in
the
Application
Note
available
at:
http://www.sark110.com/application-notes/rfid-appnote
The measurement procedure is as follows: