Maury Microwave Corporation
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Cryogenic Noise Terminations - Waveguide

MT70xx Series

Description

Maury offers waveguide cryogenic terminations in several styles and a wide range of waveguide sizes from WR112 through WR15. The chart below represents a typical sample of the available terminations.

Waveguide terminations are generally calibrated at three frequencies - high, low and arithmetic center - 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.

In addition to liquid nitrogen, these terminations require pressurization with helium gas (not provided) at 2 psi. The MT152A Helium Gas Pressurizing System is available to provide proper regulation of the helium supply.

Specifications

Model

Frequency
Range (GHz)

EIA
Waveguide Size
Maximum
VSWR (GHz)
Uncertainty
MT7040D
7.05 - 10.0
WR112 1,2
1.08
DC - 18.0 GHz < ±1.5 K

18.0 - 40.0 GHz < ±1.5 K

40.0 - 50.0 GHz < ±1.8 K

50.0 - 110.0 GHz < ±2.6 K
MT7041A
10.0 - 12.4
WR90 2
1.10
MT7042A
10.0 - 15.5
WR75 3
1.08
MT7043D
13.0 - 15.0
WR62 2
1.10
MT7044B
15.0 - 22.0
WR51 3
1.10
MT7021J
18.0 - 26.5
WR42 2
1.08
MT7022J
26.5 - 40.0
WR28 2
1.10
MT7023A
33.0 - 50.0
WR22 2
1.10
MT7025B
50.0 - 75.0
WR15 2
1.15
MT7027J
75.0 - 110.0
WR10 2
1.20

1 Flange mates with the applicable CPR flange.
2 Flange mates with the applicable military (UG) flange.
3 Flange mates with most applicable military and industrial flanges.



Model MT7021J (CE) comes with a calibrated WR28 adapter and a universal input power supply.

Product Data Sheets

• 4B-028 Technical Data - WR10 Waveguide Cryogenic Noise Termination (CE)
• 4B-029 Technical Data - Generic Waveguide Cryogenic Noise Termination (CE)
• 4E-020 Noise Calibration Swept Data Module - MT7250 Series
• 5C-028 Application Note - Applications of the Maury Noise Calibration System; Accuracy & Convenience in Noise Measurement

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