详细说明
PrecisionCalibratedNoiseSources
| Features | |
| ENR 12…15 dB typicalHigh stabilityGood flatness | No high voltage supply requiredCompact solid state sourceHigh reliability, rugged construction |
| Applications | |
| Measurement and test equipmentMm-wave noise sourceCalibrationNoise figure measurementСompatible with noise figure meters for all brand names |
| Description | |
| ELVA-1's calibrated noise source ISSN-XX series delivers a uniform level of noise power spectral density within the whole waveguide frequency range. Sources are available in eight waveguide bands covering 26.4-170 GHz. A Silicon IMPATT diode is employed as a fundamental building block of the source. High stability of the device allows it to be used for test and instrumentation applications in place of gas-tube noise sources. Low DC power requirements eliminate the need for complex high voltage supplies. There are two operation modes: CW mode and pulsed AM mode with modulation frequency up to 1 kHz. Typical value of excess noise ratio (ENR) as a function of frequency is given on the plot below. |
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| Block Diagram of Noise Source | |
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| Inputs and Controls: | |
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Notes:
Power/TriggeringInversionSwitchcanbeusedformanualON/OFF.“INV”positionisON.
MicrowavepowercanbeswitchedwithTTL-levelcontrolvoltage.
IfTriggeringInversionSwitchisinOFF(Down)positionactivelevelishigh,otherwise(INVposition)–activelevelislow.
Eachsourcesuppliedcalibratedrelativetoliquidnitrogencooledload.
Specifications
ModelNumber
ISSN-28
ISSN-22
ISSN-19
ISSN-15
ISSN-12
ISSN-10
ISSN-08
ISSN-06
FrequencyBand
Ka
Q
U
V
E
W
F
D
andRange,GHz
26.5-40
33-50
40-60
50-75
60-90
75-110
90-140
110-170
Inputwaveguide
WR28