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.

Open Resonator Method
Dielectric Constant and Dielectric Loss Tangent(Dk/Df)
Measurement System
[film, thin film, sheet, liquid, millimeter wave, high precision, Dk, Df, εr', tanδ, dielectric loss, measuring device]

Model No. DPS03
Highly precise Millimeter Wave measurement ! Ideal solution for 76.5GHz, 110GHz, 170GHz etc. measurement !!

KEYCOM’s ultra-thin sheet measurement system employs the Fabry-Perot resonator, a linear optical resonator which consists of two highly reflecting mirrors, which combines the high measurement accuracy in the millimeter wave range and simplicity of installing the specimens.

The feature is that the system can measure samples with small loss tangent(tanδ).

The system also has a reputation as a method for measuring low-loss liquids in the high-frequency band.

・ Very accurate measurement : ex. PTFE@76.5GHz / εr' 2.05, tanδ 0.0004
・ Measurement of ultra-thin film(ex. 5μm)
・ Easy operation
・ Measurement of oil and solvent in high frequency band
・ Measurement frequency range : 18GHz-110GHz

Applicable Standard (for Sheet) :
JIS R1660-2

Publication (for thin films) :
H.Suzuki, T.Kamijo
“Millimeter wave measurement of complex permittivity by perturbation method using open resonator”
IEEE Trans. Instrument and Measurement
VOL.57. No.12, Dec.2008
pp2868-2873

Measurable Samples(Example)

PCB, Film(Ultra thin film, thin sheet), Ceramics, Radome cover, Resin etc.

Electric Field Direction

Longitudinal or transverse parallel to the ground / in the sample plane
⇒ Anisotropy in the sample plane can be checked

Specifications

Items Details
Frequency 18~330GHz
Permittivity

1.05~30
Precision(repeatability) : ± 1% or ±0.01(depend on network analyzer's performance)
Precision + accuracy(to true value) (based on PTFE) : ±3% or ±0.01(depend on measurement theory and design of positioning tool)
tanδ

0.0001~0.05
Precision : ± 3% or ±0.0001(depend on network analyzer's performance)
Precision + accuracy(to true value) (based on PTFE) : ±7% or ±0.0001(depend on measurement theory and design of positioning tool)

Sample size

<Sample size>
・120mm x 120mm or more (20GHz)
・80mm x 80mm or more (50GHz)
<Sample thickness>
Sheet of 5μm ~ 0.2mm
or 1/2 x an integer multiple of effective wave length
Device Size Within 900mm(H) x 900mm(W) x 600mm(D)
Within 500mm(H) x 700mm(W) x 300mm(D) : One-sided flat type
Temperature Range Room T(standard)
Please contact us for other temperature ranges

Components and parts No.

Name Specifications Model No.
Main Body Automated precise positioning movable table
(common to all frequency ranges),
including case		 MDM-02
MDM-12(For one-sided flat type / liquid measurement)
Fabry-Perot resonator 20-33GHz FPR-33B
26.5-40GHz FPR-40
33-50GHz FPR-50
39-60GHz (FPR-60)
50-75GHz FPR-75
(59-90GHz) (FPR-90)
75-110GHz FPR-110
110-140GHz FPR-140-X
140-170GHz FPR-170
170-200GHz FPR-200
200-220GHz FPR-220
220-260GHz FPR-260
260-300GHz FPR-300
300-330GHz FPR-330
Software (common to all frequency ranges) For sheet P118050123-01
For ultra thin sheet P118050123-02
Windows PC, Printer
GPIB interface GP-01
Network analyzer Available upon request .
Please request the model of your choice.

Measurement steps

1. Specify frequency range, frequency steps, measurement parameters(εr, tanδ, Q)
2. Name specimen, input width
3. Insert specimen
4. Start Measurement
5. Specify format of graphical output and numerical data output

Configurations

Appearance

MDM-02(Measurement of film , sheet)

MDM-03(Measurement of liquid , sheet)

One-sided flat type

Example of test result


Customers (Area or Country, sales)

D(Japan, US$70 billion), H(Japan, US$600 billion), T(Japan, US$20 billion), K(Japan, US$500 billion), M(Japan, US$600 billion)
ITRI(Taiwan, -), F(Asia, US$600 billion) , S(Asia, US$1 billion), H(Asia, US$800 billion), DS(Asia, US$2 billion) etc.