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.

Propagation Delay Mode Cut Back Type
Coaxial Tube Method
Dielectric Constant and Dielectric Loss Tangent(Dk/Df)
Measurement System

Model No. DPS05

This system is designed for measurement of dielectric constant and dielectric loss tangent of liquid samples whose εr’ is approximately from 1.05 to 500 in the measurement frequency range of 45MHz - 40GHz.
It is also capable of evaluating voltage dependency of such object as liquid crystals by impressing bias. A paper based on this method was published in the journal of The Institute of Electronics, Information and Communication Engineers, C Vol.J85-C No.12 PP.1149-1158 December 2002.


"Measurements of dielectric properties of nematic liquid cristals at 10kHz to 40GHz and application to a veriable delaya line"
The Institute of Electronics, Information and Communication Engineers, JAPAN, Part2, Vol. 86, No.8, 2003 Wiley Periobicals, Inc.


Measurement frequency 45MHz~40GHz
Dielectric constant (εr') 1.05-500   Accuracy ±5%
Dielectric loss tangent (tanδ) 0.001-5   Accuracy ±10%

Model No.

Name Model No.
Test kit for the Cut Back method CBC-03
Coaxial cable with connector for 40GHz 1m (2 pecies) CM06D-APC2.9(m)APC2.9(m)-0500
Program for the Cut Back(1 set) DMP-14
Vector network analyzer Available upon request.
Windows PC w/printer  
GPIB cable GP-01


Data example (English version available)