Thermal Noise Termination - 7mm Coaxial



The MT7108B is designed to operate from DC to 18 GHz and is provided with a precision 7mm (APC7) output connector. This compact, reliable instrument is equally suited for both field measurements and laboratory use. It is generally utilized for accurate low noise figure/ temperature measurements and calibration of solid state noise generators.

The termination is maintained at 373.1 kelvin (100�C) by the MT151C controller. The physical temperature of the termination is maintained by a heater coil controlled by a proportional controller in the control unit responding to sensors in physical proximity to the termination. The entire termination assembly is heavily insulated to minimize the effects of the external environment. The controller and the termination are matched during calibration and are provided as a unit, and a line voltage option must be specified at time of order.

VSWR and noise temperature data are provided at four frequencies as shown in the specifications below. Options for additional or alternate user-specified frequencies are available. Maury also offers the MT7250 series Noise Calibration Swept Data Module as a software tool that allows users to work with other non-standard data points in addition to, or in place of, the factory standards. A certified calibration report with traceability to NIST is provided with each unit.
MT7108B Thermal Noise Termination with MT151C Controller (at left).
The flexibility and versatility of the MT7108B is enhanced by an extensive complement of options and accessories. These include calibrated adapters to other coaxial connector series and waveguide, and user specified calibration frequencies.


Frequency Range:
DC - 18 GHz
Maximum VSWR:
  DC to 4.0 GHz
  4.0 to 12.0 GHz
  12.0 to 18.0 GHz
Nominal Physical Load Temperature:
373.1 kelvin (100°C)
Load Temperature Stability:
Noise Temperature Uncertainty:
Precision 7mm
AC Power (option must be specified):  
  Option 22
100/120 VAC, 50/60 Hz
  Option 32
220/240 VAC, 50/60 Hz
Accessories Provided:
MT151C (One)
  Controller Cable
MT151P (One)
  Instrument Case

Application Notes and Data Sheets


Technical Data - Model MT7108B - 7mm Coaxial Thermal Termination


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

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