This
small E-Field Sensor has been designed to measure E fields from a
wide variety of sources.
The sensor has been designed to have:
Constant
sensitivity over a wide range
Known
equivalent height
Known
source impedanc
F-401
Specification
Frequency:
10MHz
-1.0GHz
Length
10
mm
Width
8
mm
Height
13
mm
Connector:
BNC
The
sensor is a short cylindrical monopole having a very small effective
height, making it very useful for resolving changes of field strength
over small distances. It is especially useful for diagnostic testing
of circuit boards, cabling and shielded structures.
The
probe has excellent sensitivity and is very useful in the "near
field". However, since the absolute value of E/H for any given
radiation source varies with distance as well as other parameters,
the output is relative and uncalibrated.
TEM
Cell measurements and theoretical calculations indicate that from
30 MHz to 1 GHz the output voltage for a plane wave E field will be
approximately 4.6 x 10-3 E (volts/meter). With this sensitivity, a
spectrum analyzer with a sensitivity of one micro-volt will be able
to detect 4 millivolts/meter and higher.
