UME

RF and Microwave Laboratory

About Us

The aim of the RF and Microwave Laboratory is to comprise and maintain the primary level standards traceable to the SI units at the high frequency power, impedance, attenuation and noise measurements at the level of leading national metrology institutes. Also, distribute magnitudes obtained from standards to the countrywide.
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Fields of Activity

The RF and Microwave Laboratory aims to respond to calibration requests in the areas of RF power, RF impedance, RF attenuation ratio, and RF noise measurements, as well as to participate in new projects and carry out research and development activities.

RF and Microwave Laboratory serves their technology infrastructure and knowledge to the local industry by the improved collaboration programme. Laboratory activities is to give a training, consultancy and establish new setup according to the measurement/calibration requirements, comprise traceable procedures and specific design of prototype of measurement equipment in the RF and Microwave metrology area.

Services Provided

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Calibration / Testing Services

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Training Services

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Consulting Services

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Technical Hardware and Equipment

The laboratory has primary level calibration systems for RF power sensor calibrations and calibrations of calculable impedance standards;

Primary Level Calibration Systems

  • A microcalorimeter system measuring the effective efficiency of thermistor mounts with N-type connectors in the 100 kHz – 18 GHz frequency range and WR220 connectors in the 18 GHz – 26.5 GHz range
  • Dimensional measurement systems for calculable impedance standards (airline) in the 100 MHz – 50 GHz frequency range.

Calibration Scope

  • N type (100 kHz - 18 GHz)
  • 3.5 mm (100 kHz - 26.5 GHz)
  • 2.92 mm (50 MHz - 40 GHz)
  • Calibration factor measurement of 2.4 mm (50 MHz – 50 GHz) connector RF power sensors

RF Power Measurements

  • 100 kHz to 50 GHz frequency, -70 dBm to +20 dBm range
  • Microwave power source power accuracy, linearity and uniformity measurements

S Parameter Measurements

  • Transmission and reflection coefficients
  • N type, 3.5 mm, 2.92 mm, 2.4 mm connectors
  • 100 kHz - 50 GHz frequency range

S Parameter Measurements

  • Transmission and reflection coefficients
  • N type, 3.5 mm, 2.92 mm, 2.4 mm connectors
  • 100 kHz - 50 GHz frequency range

Advanced Measurement Capabilities

  • Material characterization up to 50 GHz
  • RF noise source calibration up to 50 GHz
  • RF power measurement up to 1.1 THz
  • Coaxial non-linear S-parameter measurements up to 110 GHz, waveguide measurements up to 110-170 GHz
Measurement Magnitudes and Extended Uncertainties Offered by the RF and Microwave Laboratory
Measurement Size and Calibrated Instruments Measurement Range Measurement Conditions Calibration and Measurement Capability (Uncertainty k=2) Explanations
RF Power
RF Power Supply
RF Power Meter
-20 dBm -
+10 dBm 		100 kHz - 18 GHz 6 mW/W - 9 mW/W with Type N connector
18 GHz - 26.5 GHz 10 mW/W - 30 mW/W Waveguide
-25 dBm -
+20 dBm 		50 MHz - 26.5 GHz 14 mW/W - 40 mW/W with 3.5 mm connector
50 MHz - 40 GHz 16 mW/W - 50 mW/W with 2.92 mm connector
50 MHz - 50 GHz 20 mW/W - 60 mW/W with 2.4 mm connector
+20 dBm -
+30 dBm 		100 kHz - 40 GHz 30 mW/W - 65 mW/W N type, 3.5 mm, 2.92 mm connector
-100 dBm -
-25 dBm 		100 kHz -18 GHz 1.7 dB with Type N connector
50 MHz - 26.5 GHz 1.7 dB with 3.5 mm connector
-10 dBm -
+8 dBm 		75 GHz - 1.1 THz - WR12, WR10, WR6.5, WR1.1
Calibration Factor Thermistor 0.1 mW - 10 mW 100 kHz - 18 GHz 4 mW/W - 9 mW/W With N type connector
18 GHz - 26.5 GHz 10 mW/W - 30 mW/W Waveguide
RF Power Sensor 50 MHz - 26.5 GHz 11 mW/W - 35 mW/W with 3.5 mm connector
50 MHz - 40 GHz 10 mW/W - 40 mW/W with 2.92 mm connector
50 MHz - 50 GHz 10 mW/W - 40 mW/W with 2.4 mm connector
Effective Efficiency Thermistor 1 mW - 10 mW 100 kHz - 18 GHz 3.3 mW/W With N type connector
18 GHz - 26.5 GHz 3.9 mW/W Waveguide
Calculable Impedance Standard Outer Conductor Inner Diameter 7,0000 mm 100 kHz - 18 GHz 0.0052 mm With N type connector
3,5000 mm 10 MHz - 26.5 GHz 0.0052 mm with 3.5 mm connector
2,9200 mm 10 MHz - 40 GHz 0.0054 mm with 2.92 mm connector
2,4000 mm 10 MHz - 50 GHz 0.0061 mm with 2.4 mm connector
Calculable Impedance Standard Inner Conductor Outer Diameter 3,0400 mm 100 kHz - 18 GHz 0.0010 mm With N type connector
1,5200 mm 10 MHz - 26.5 GHz 0.0010 mm with 3.5 mm connector
1,2700 mm 10 MHz - 40 GHz 0.0010 mm with 2.92 mm connector
1.0423 mm 10 MHz - 50 GHz 0.0010 mm with 2.4 mm connector
Reflection Coefficient Passive devices Real and Virtual ±1 and ±1 100 kHz - 18 GHz 0,004 - 0,026 With N type connector
45 MHz - 26.5 GHz 0,008 - 0,029 with 3.5 mm connector
50 MHz - 40 GHz 0,012 - 0,030 with 2.92 mm connector
50 MHz - 50 GHz 0,012 - 0,030 with 2.4 mm connector
10 MHz - 110 GHz - With Coaxial Connector
75 GHz - 170 GHz - Waveguided
Transmission Coefficient
Passive 		100 kHz - 18 GHz 0,012∙10-3 - 1,190∙10-3
(0.01 dB - 0.10 dB) 		N type
with connector
Devices, Attenuator Real and Virtual ±1 and ±1 (in the range 0 dB - 60 dB) 45 MHz - 26.5 GHz 0,004∙10-3 - 1,194∙10-3
(0.010 dB - 0.039 dB) 		with 3.5 mm connector
50 MHz - 40 GHz 0,006∙10-3 - 1,194∙10-3
(0.010 dB - 0.039 dB) 		with 2.92 mm connector
50 MHz - 50 GHz 0,006∙10-3 - 1,194∙10-3
(0.019 dB - 0.063 dB) 		with 2.4 mm connector
10 MHz - 110 GHz - With Coaxial Connector
75 GHz - 170 GHz - Waveguided
Reflection Coefficient Active devices Real and Virtual ±1 and ±1 100 kHz - 18 GHz 0,004 - 0,026 With N type connector
45 MHz - 26.5 GHz 0,008 - 0,029 with 3.5 mm connector
50 MHz - 40 GHz 0,012 - 0,030 with 2.92 mm connector
50 MHz - 50 GHz 0,012 - 0,030 with 2.4 mm connector
10 MHz - 110 GHz - With Coaxial Connector
75 GHz - 170 GHz - Waveguided
Transmission Coefficient Active devices, Transistor, Amplifier, Attenuator Real and Virtual ±1 and ±1 (in the range 0 dB - 60 dB) 100 kHz - 18 GHz 0,012∙10-3 - 1,190∙10-3
(0.01 dB - 0.10 dB) 		With N type connector
45 MHz - 26.5 GHz 0,004∙10-3 - 1,194∙10-3
(0.010 dB - 0.039 dB) 		with 3.5 mm connector
50 MHz - 40 GHz 0,006∙10-3 - 1,194∙10-3
(0.010 dB - 0.039 dB) 		with 2.92 mm connector
50 MHz - 50 GHz 0,006∙10-3 - 1,194∙10-3
(0.019 dB - 0.063 dB) 		with 2.4 mm connector
10 MHz - 110 GHz - With Coaxial Connector
75 GHz - 170 GHz - Waveguided
RF Noise (ENR) Noise Sources 5 dB - 15 dB (1300 K - 11400 K) 10 MHz to 18 GHz 0,065 With N type connector
10 MHz to 26.5 GHz 0,072 with 3.5 mm connector
10 MHz - 50 GHz 0,074 with 2.4 mm connector
Material Characterization Relative Dielectric
Coefficient, Relative Magnetic Permeability Coefficient 		ɛ : 0 - 200 µ : 0 - 200 200 MHz - 50 GHz - Shaped Solid, Semi-solid, Liquid
Materials

PHYSICS GROUP

Projects and Collaborations

  • RF and Microwave Laboratory carries out studies in the field of metrology in national and international joint R&D projects.
  • EMPIR 15RPT01 RFMicrowave "Development of RF and Microwave Metrology Capability" project, supported by the European Union, was carried out under the coordination of TÜBİTAK UME between 2016-2019 with the partnership of 7 national metrology institutes, 1 designated institute and 1 university.
  • In 2015, the Egyptian National Metrology Institute developed a primary level power measurement system (microcalorimeter) capable of operating up to 18 GHz.
  • The RF and Microwave Laboratory conducted an internally funded project for the extension of the S parameter and power measurement infrastructure up to 170 GHz between 2018 and 2020.
  • The RF and Microwave Laboratory carried out a TUBITAK-supported software development project (TEYDEB 1505 - 520040) in 2020-2022, which can be used by accredited calibration and manufacturing laboratories that perform RF power measurements, both automatic RF power measurement and uncertainty calculation in accordance with the international definition.
  • Between 2014-2017, RF power, RF Power Supply, S parameter calibration systems in the frequency range of 100 kHz - 50 GHz were installed at the Saudi Arabian National Metrology Institute (SASO NMCC).
  • In 2024, the Azerbaijan National Metrology Institute (AzMI) installed RF power, RF Power Supply, S parameter calibration systems in the frequency range of 100 kHz - 50 GHz.
  • RF and Microwave Laboratory has been involved as a project partner in the projects listed below.
    • EPM 23IND03 RF4 6G, RF Key quantities for 6G development
    • EPM 23RPT04 RFMicrowave II, Development of RF and microwave capability II
    • EMPIR 18SIB09 TEMMT, Traceability for electrical measurements at millimetre-wave and terahertz frequencies for communications and electronics Technologies
    • EMPIR 20IND03 FutureCom, RF Measurements for future communications applications
    • EMPIR 16NRM07 VectorSAR, SAR measurement using vector probes
    • EMPIR 20FUN07 SUPERQUANT, Microwave metrology for superconducting quantum circuits

For more informationContact Us

Email: ume@tubitak.gov.tr

Phone: 0 (262) 679 5000

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