MICROWAVE NOISE TUBES & NOISE SOURCES
TD/TN Series
DESCRIPTION
CP Clare鈥檚 TD Series of gas discharge microwave noise tubes and TN Series of gas discharge microwave noise
sources are the element in a microwave RF system that allows accurate measurements of the noise figure of the
receiver or its components. The requirements of a device used for making such noise figure measurements
include broad bandwidth inherent in the active element, stability, ease of operation, and long life. In general, the
range of usefulness of these noise sources permits measurements of noise figures from about 2 to 30dB. The
PS-237 through PS-240 current-regulated power supplies can be used to operate many of the noise sources
described herein.
FEATURES
s
s
s
s
s
APPLICATIONS
s
Noise figure measurement
Excess noise ratios (ENR): up to 20dB
Broad bandwidth
Excellent long term stability
Life up to 20,000 hours
AC, DC, or pulsed operation
SPECIFICATION RANGES
Parameter
Frequency
ENR
Operating Current
Starting Voltage
Range
0.2 - 220.0
8.8 - 20.1
30 - 250
0.9 - 7.0
Units
GHz
dB
mA
kV
(See detailed specifications for more data. Contact CP Clare for TD and TN part numbers or for other
requirements not listed.)
www.cpclare.com
571
1
2
3
4
5
