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.

Lens Antenna Method, Diagonal Incidence Type
Electric Wave Absorber, Return Loss Measurement System (2.6-26.5GHz/18-325GHz)
JIS　R1679 : 2007/IEC　62431 : 2008

Model No. EAS03
Features

EAS03 is an ideal solution for evaluation of electric wave absorbers and shield materials. Unlike coaxial or waveguide type, errors by air gap do not occur because the sample is not capsulated in the fixture.

Despite its compact dimensions, your sample can be measured with plane wave because the lenses are attached to the antennas, providing high measurement accuracy.

Samples can be smaller than conventional systems because they can be placed in the vicinity of the antennas.

It is also suitable for ITS/ETS applications, and supports vertical incidence when using a vector network analyzer.

Transportable type is available for heavy or immovable objects such as concrete wall or asphalt road.

Reasons for high accuracy
Standardization 【Related Products】
👉 Products Line-up of Wave Absorption Rate Measurement System(Near-field / Far-field)
👉 Products Line-up of Shield Effect Measurement System

Publication


H.Suzuki, Others, "Free space measurmet method with parallel electromagnetic wave beam by using dielectric lenses and horn antennas for reflectivity of electromagnetic absorbers in millimeter waves" IEICE Trans, electro., Vol. E89-C, No.1 Jan.（2006）24-29

Specifications

Model No. LAF-2.6A LAF-26.5A
Frequency range 2.6-26.5GHz 18GHz-325GHz
Sample size 430mm x 430mm @2.6GHz ∠0°
300mm x 300mm @10GHz ∠0°
300mm x 300mm @26.5GHz ∠0°		 150mm x 150mm @26.5GHz ∠0°
150mm x 150mm @110GHz ∠0°
Incidence angle (half-width) Minimum : ∠0°　(Usually ∠15°)
Maximum : ∠80°
( ∠90° version available for transmission mode.
Please contact your KEYCOM rep.) 		Minimum : ∠0°　(Usually ∠15°)
Maximum : ∠90°
Body size H1700 x W1500 x D1300mm
(H1200 x W1500 x D3000mm @∠80°)
Weight 250kg		 H870 x W600 x D500mm
(H540 x W1120 x D500mm @∠90°)
Weight 40kg

Specifications

Items Specifications Model No.
Body
(Lens, Lens fixing frame,
antenna fixing stand,
Metallic board for calibration)
Frequency range 2.6-26.5GHz LAF-2.6A
Frequency range 2.6-26.5GHz
Transportable type
(heavy or immovable objects such as concrete wall or asphalt road. )		 LAF Direct-2.6A
Frequency range 18GHz-325GHz LAF Direct-26.5A
Frequency range 18GHz-325GHz
Transportable type
(heavy or immovable objects such as concrete wall or asphalt road. )
Antenna
(with coaxial waveguide converter)
2 sets required 		Frequency range　1.70-2.60GHz (WR-430) RH430S14SMA(f)7
Frequency range　2.60-3.95GHz (WR-284) Rh284S14SMA(f)7
Frequency range　3.95-5.85GHz (WR-187) RH187S16SMA(f)7
Frequency range　4.90-7.05GHz (WR-159) RH159S17SMA(f)7
Frequency range　5.85-8.2GHz (WR-137) RH137S18SMA(f)7
Frequency range　8.2-12.4GHz (WR-90) RH90S19SMA(f)7
Frequency range　12.4-18GHz (WR-62) RH62S22SMA(f)7
Frequency range　18-26.5GHz (WR-42) RH42S23SMA(f)7
Frequency range　33-50GHz (WR-22) RH22R23APC2.4(f)7
Frequency range　26.5-40GHz (WR-28) RH28S23SMA(f)7
Antenna
(with waveguide)
2 sets required 		Frequency range　50-75GHz (WR-15) RH15S10
Frequency range　75-110GHz (WR-10) RH10S10
Frequency range　110-170GHz (WR-6) RH06S10
Frequency range　170-260GHz (WR-4) RH04S10
Frequency range　220-325GHz (WR-3) RH03S10
Measurement software, calibration and graphing For all frequency DMP-20
Measurement software, calibration and graphing (update) For all frequency DMP-20up
Microwave cable and adaptor    
Electric wave absorber (when you use a small sample)  
GPIB cable   GP-01
Vector network analyzer,
spectrum analyzer + synthesizer		 Available upon request Please request the model of your chice.
Frequency extender For 79GHz MWM79
Available upon request Please request the model of your chice.
Windows　PC (with printer) Available upon request Please request the model of your chice.
* The higher the measurement frequency is, the smaller the samples can be.
* By applying a gate beyond the lenses closer to the sample after calibration, it allows you to measure electromagnetic absorption rate above –50dB with a standard vector network analyzer.

Outside appearance

2.6GHz-26.5GHz （LAF-2.6A）

  

26.5GHz-325GHz （LAF-26.5A）
* Please specify the incidence angle to be 90° as shown in the picture above when you wish to measure in the transmission mode.

2.6-26.5GHz 用（LAFS-2.6A）

  

4.9-26.5GHz 用（LAFSDirect4.9A）

Data example