Thermal Noise Termination - Waveguide

MT70xx Series

Description

Maury offers waveguide thermal terminations in several styles and a wide range of waveguide sizes, from WR430 through WR10. The chart below represents a typical sample of the available terminations.

Waveguide terminations are generally calibrated at three frequencies - high, low, and arithmetic center of the waveguide band - within the applicable frequency range; however, they can be calibrated at any user-specified frequency within the waveguide band. Additional user-specified calibration frequencies are also available as an option.

The physical temperature of the waveguide terminations is 350 kelvin (100°C) with a stability of ±0.2 kelvin. These terminations are calibrated with a specific temperature controller, and the two instruments are provided as a unit. A line voltage option must be specified at the time of order.
MT7090J Thermal Noise Termination (at right) with MT151C Temperature Controller (at left).


Specifications

Frequency Range:
See Available Models Chart
Maximum VSWR:
See Available Models Chart
Nominal Physical Load Temperature:
350 kelvin (77°C)
Load Temperature Stability:
±0.2 kelvin
Noise Temperature Uncertainty:
See Uncertainty in Chart
Connector:
See Available Models Chart
AC Power (option must be specified):
  Option 22
100/120 VAC, 50/60 Hz
  Option 32
220/240 VAC, 50/60 Hz
Accessories Provided:  
  Controller
MT151C (One)
  Controller Cable
MT151P (One)
  Instrument Case
(One)


Available Models

Model
Frequency
Range
(GHz)
EIA
Waveguide
Size
Maximum
VSWR
(GHz)
Uncertainty
MT7081A
10.0 - 12.4
WR90 1
1.10
DC - 18.0 GHz < ±0.6 K

18.0 - 40.0 GHz < ±0.6 K

40.0 - 50.0 GHz < ±0.65 K

50.0 - 110.0 GHz < ±1.0 K
MT7082A
10.0 - 15.0
WR75 1
1.08
MT7009B
15.0 - 22.0
WR51
1.10
MT7084A
18.0 - 26.5
WR42 1
1.08
MT7085A
26.5 - 40.0
WR28 1
1.10
MT7086A
33.0 - 50.0
WR22 1
1.10
MT7088B
50.0 - 75.0
WR15 1
1.20
MT7090J
75.0 - 110.0
WR10 1
1.15

1 Flange mates with the applicable military (UG) flange.

Application Notes and Data Sheets

4D-905

Technical Data - Model MT70xx-Series - Waveguide Thermal Termination

5C-028

Application Note - Applications of the Maury Noise Calibration Systems; Accuracy & Convenience in Noise Measurement

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