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/26.5-110GHz)
JIS R1679 : 2007/IEC 62431 : 2008

Model No. EAS03

EAS03 is an ideal solution for evaluations of the 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. It also supports a 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:
*Its plane wave is in phase with sample face.
*Its parallel beam prevents interferences of unnecessary electric wave.
* An anechoic chamber is not required.
*Wide dynamic range, more than 50dB with gating and 40dB without.

JIS R1679 : 2007
IEC 62431 : 2008


  LAF-2.6A LAF-26.5A
Frequency range 2.6-26.5GHz 26.5GHz-110GHz
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

Parts No. and specifications

Name Specifications Model No.
 (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 26.5GHz-110GHz LAF Direct-2.6A
Frequency range 26.5GHz-110GHz
Transportable type
(heavy or immovable objects such as concrete wall or asphalt road. )
 (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
 (with waveguide)
  2 sets required
Frequency range 50-75GHz (WR-15) RH15S23
Frequency range 75-110GHz (WR-10) RH10S23
Measurement software, calibration and graphing   DMP-20
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.
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)

* Please specify the incidence angle to be 90° as shown in the picture above when you wish to measure in the transmission mode.

26.5GHz-110GHz (LAF-26.5A)


Data example