KEYCOM provides solutions in the 300 GHz to 1 μHz frequency range (SHF/EHF/MW/UHF/VHF/ULF).
We undertake designing, manufacturing and measuring. Please feel free to contact us.

Perturbation Method
Specimen-Hole Closed Type, Cavity Resonance Mode
Dielectric Constant and Dielectric Loss Tangent Measurement System(Dk/Df)
[Powders, film, ultra-thin sheet, ultra-thin film, sheet, millimeter wave, high accuracy, Dk/Df, εr', tanδ]

Model No. DPS18
High accurate measurement for film and powders

KEYCOM’s high precision perturbation method enables you to measure dielectric constant (permittivity, εr) and dielectric loss tangent (tan δ) of such specimens as multi-layered structure, ultra-thin film or ferroelectric materials in the microwave region.
KEYCOM refined the conventional perturbation method that was JIS-standardized in 1992 (JISC2565) by closing the hole into which the specimen is inserted with metal, and the new method is also compliant with ASTMD2520.

* High accuracy : εr' ±1%, tan δ ±3%.
* Ultra-thin films (less than 0.1μm in thickness) - capable of measurement
* Multi-layer film(Vapor-deposited film) - capable of measurement
* Also ideal for solids, sheets, powders, liquids (oils, etc.)
* User-friendly operability.
* Measurement frequency range : 200 MHz - 10 GHz.

* Please contact your KEYCOM representative for other measurement temperatures than room temperature.


Specifications

Measurable samples

-Layered structures
-Powders-liquids
-Radome covers
-Dielectric resonators
-Ferroelectric materials
-PWB films
-Sheets
-Wave absorbers
(listed above are typical samples. Please contact KEYCOM representative for samples that are not listed.)

Measurement frequency 200MHz - 10GHz (single point measurement)
Standard frequencies: 300 MHz, 1, 2, 2.45, 3, 5, 5.8, and 10GHz
(Please request your desired frequencies for customization.)

Measurable range of εr
(relative permittivity)

1-150 (generally, a measurable range of εr is decided by a volume of its tanδ), accuracy ±1%
Measurable range of tanδ
(relative dielectric loss tangent)
0.0001-0.05 , accuracy ±3%
Temperature range Room temperature
Please contact your KEYCOM representative for other measurement temperatures than room temperature.

Resonator operation equipment

Weight: approx. 10 kg
Height: approx. 320 mm
Size of the base: 300 mmφ 

1 GHz cavity Weight: approx. 8 kg
5 GHz cavity Weight: approx. 1.25 kg

Specimen shape

Film All film samples can be measured (multi-layered structures can also be measured).
Size: 30 mm(±0,1mm) × 30 mm
Size may vary depending on the thickness of the film.
Rod-shaped

Diameter: 1-7 mm for cylinders or 2-3 mm for rods having a square cross-section
(actual values depend on measuring frequency, see below)
Ex.
1 GHz - a diameter of 10 mm or less
5 GHz - a diameter of 4 mm or less
10 GHz - a diameter 2mm or less
Length: 30 mm(±0.1mm)

Others Please inquire about other specifications.

Order information : Model numbers

Model No. Name Description
COE-01 Mechanical Control System for Cavity  
TMR-1A Resonator kit

*If the frequency you require is not listed,
please feel free to contact us.
Resonator kit for approximately 1 GHz
TMR-2A Resonator kit for approximately 2 GHz
TMR-2.45A Resonator kit for approximately 2.45 GHz
TMR-3A Resonator kit for approximately 3 GHz
TMR-5A Resonator kit for approximately 5 GHz
TMR-5.8A Resonator kit for approximately 5.8 GHz
TMR-10A Resonator kit for approximately 10 GHz
DMP-25 Perturbation method resonance mode measurement software for sheet measurement
CM06D-AA-1000 Coaxial cable assembly (1m) We will offer suitable cables for measurement frequency (2 pcs needed).
TCOV-04 Thermostat chamber (room temperature - 200℃) Please let us know measurement temperature.
VNA Network analyzer If you have a request, please be informed a suitable models from us.
PC Windows PC Can be purchased together with components listed above. Please inquire about details.
GP-01 GPIB interface Can be purchased together with components listed above. Please inquire about details.

Data example (English version available)


Configurations

300MHz Resonator