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Intelligent Electromagnetic Sensor Laboratories (iEMSL)

Texas A&M University College of Engineering
You are here: Home / Services / Material Characterization Services

Electromagnetic Material Characterization Measurement Services

Test the performance of your MUT’s in the iEMSL’s state-of-the-art facility.

Request A Measurement


In collaboration with QWED and the University of Warsaw, iEMSL brings world-class expertise to every project. Whether you’re testing complex permittivity, shielding effectiveness, conductivity or other material characteristics, we provide customized solutions. Have a unique test requirement? Reach out, and we’ll strive to accommodate your request with our flexible, innovative approach.

Unlock precise electromagnetic properties of your materials with our advanced characterization services. We connect all fixtures to our high-performance Keysight PNA-X (up to 26.5 GHz) or Rohde & Schwarz ZVA (up to 67 GHz) vector network analyzers. Utilizing a combination of industry-leading commercial software and our own specialized tools, we deliver accurate control and extraction of critical material parameters tailored to your needs.

Measurement System Frequency Range Applications Sample Requirements Measurement Accuracy Price per Sample
Transmission Line
WR-90 Waveguide
8.2 – 12.4 GHz
(X-band)
Shielding Effectiveness (SE) testing

Permittivity of high-loss solids

EMC compliance for materials
Length: 22.86 mm
Width: 10.16 mm
Thickness: 2 or 5 mm
Dielectric constant: ±5%
Shielding effectiveness: ±1%
$250 first
+ $100 additional

TAMU:
$100 First+ $25 additional
Split Post Dielectric Resonator
(SPDR)
10 GHz Complex permittivity of dielectric sheets

Supports IPC & IEC standards
Length: > 45 mm
Width: 45 – 90 mm
Dielectric constant: Δε/ε = ±(0.0015 + Δh/h)

Loss tangent: Δtanδ = ±2×10⁻⁵ or ±0.03*tanδ (higher of the two)
Fabry-Perot Open Resonator
(FPOR)
10 – 50 GHz Wideband complex permittivity

In-plane anistropy of dielectric sheets, polymers, glasses
Diameter: 50 – 150 mm

Thickness: 1 µm – 3 mm
Dielectric constant: ±0.2% (for Dk = 1 – 15)

Loss tangent: ±2% (for Df ~5×10⁻⁶)
$350 first
+ $100 additional

TAMU:
$150 first+ $50 additional

WR-90 Waveguide Transmission Line

For solid, homogenous materials, the iEMSL can measure the complex permittivity (±5% accuracy) and shielding effectiveness (±1% accuracy). Samples must have rectangular dimensions of 22.86 mm x 10.16 mm, with a thickness of 2 or 5 mm.

The transmission line method allows extraction of the complex permittivity or shielding effectiveness of a material. The iEMSL offers measurements in the 8 – 12GHz (X-band) range.

The iEMSL will provide the Vector Network Analyzer for S-parameter extraction, the WR-90 waveguide and short plate, calibration to isolate the material, and a Nicholson-Ross-Weir extraction algorithm script to visualize your material’s response. You must provide a solid material matching the provided waveguide dimensions and a WR-90 spacer to tightly house the sample.

Split Post Dielectric Resonator

The split post dielectric resonator (SPDR) can measure the dielectric constant and loss tangent of dielectric sheets. Samples must have a diameter between 22mm and 90mm and a thickness between 15µm and 0.95mm.

The iEMSL offers single frequency measurements of the dielectric constant at 10GHz with the SPDR. Supporting IPC and IEC standards, this resonator based method is ideal for accurate characterization of thin dielectrics. For more information, visit QWED.

Fabry-Perot Open Resonator

The Fabry-Perot Open Resonator (FPOR) supports wideband complex permittivity measurements and expanded options for material dimensions. Samples should have a diameter between 50mm and 150mm and a thickness between 1µm and 3mm.

Offering very high precision for dielectric constant (±0.2%) and loss tangent (±2%) measurements over the wide frequency band of 10 – 50GHz, the FPOR is ideal for a wide variety of measurements and precision needs.

Transmission Line WR-90 Waveguide

Fabry-Perot Open Resonator

Split Post Dielectric Resonator

Partners

Ready to Measure?

iEMSL is equipped to support your material electrical testing needs. Click below to submit a request to have your material evaluated in our state-of-the-art facilities.

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