Microwave
Absorbing
Materials
SOLUTIONS
www.lairdtech.com
Innovative Technology
for a Connected World
ABOUT LAIRD TECHNOLOGIES
Laird Technologies designs and manufactures customized, performance-critical
products for wireless and other advanced electronics applications.
The company is a global market leader in the design and supply of electromagnetic
interference (EMI) shielding, thermal management products, specialty metals,
signal integrity components, and wireless antennae solutions, as well as radio
frequency (RF) modules and systems.
Laird Technologies is the world leader in the design and manufacture of customized,
performance-critical products for wireless and other advanced electronics
applications. Laird Technologies partners with its customers to customize product
solutions for applications in many industries including:
• Network Equipment
• Handsets
• Telecommunications
• Data Transfer & Information Technology
• Computers
• Automotive Electronics
• Aerospace
• Defense
• Medical Equipment
• Consumer Electronics
• Industrial
Laird Technologies offers its customers unique product solutions, dedication to
research and development, as well as a seamless network of manufacturing
and customer support facilities across the globe.
ANTENNAS & RECEPTION
WIRELESS REMOTE CONTROL
EMI SOLUTIONS
THERMAL MANAGEMENT
WIRELESS M2M & TELEMATICS
TABLE OF CONTENTS
DESIGN GUIDE FOR COMMERCIAL MICROWAVE ABSORBERS
3
MICROWAVE ABSORBING ELASTOMERS
Q-Zorb® HF (High Frequency) Surface Wave Absorbers
7
Q-Zorb® HP (High Permeability) Absorbers CA-19
9
MICROWAVE ABSORBING FOAM
RFRET - Reticulated Foam Absorbers
10
RFLS - Single Layer "Lossy" Foam Absorbers
11
ANALYSIS, TEST AND
PROTOTYPE DEVELOPMENT
12
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MICROWAVE ABSORBING MATERIALS
DESIGN GUIDE FOR
COMMERCIAL MICROWAVE ABSORBERS
Microwave absorbers have been used in military applications
for several decades. They have been traditionally used for EMI
reduction, antenna pattern shaping and radar cross reduction.
More recently with the rise of wireless electronics and the
movement to higher frequencies microwave absorbers or “noise
suppression sheets” (NSS) are used to reduce electromagnetic
interference (EMI) inside of the wireless electronics assemblies.
Two types of NSS are used for these types of applications.
They are described below:
MAGNETIC ABSORBERS
ABSORBER APPLICATIONS
Electronic operating at high frequencies can have problems with
emission of high frequency noise. Once put inside an enclosure,
the energy will add in phase at certain frequencies to cause
resonances which will hinder the performance of the device.
A good example of this phenomenon is seen in Figure 1.
The amplifier was measured in the condition shown and
subsequently remeasured inside of its enclosure. When put inside
the enclosure the performance was severely degraded due to
cavity resonances inside of the enclosure. The measured data is
shown below in Figure 2.
These are thin (.1 to 3 mm) polymeric materials filled with
magnetic particles. These materials have both high permeability
(magnetic loss properties) and high permittivity (dielectric loss
properties). This combination of properties makes these materials
very effective in eliminating high frequency EMI
Laird Technologies has two product types that are used for
commercial applications:
• Q-Zorb HP (high permeability) uses novel magnetic fillers to
achieve extremely high permeabilities at low frequencies. This
allows for relatively thin materials to provide EMI reduction at
frequencies below 2 GHz. This material comes in thicknesses
of .15 mm and .5 mm.
FOAM ABSORBERS
These absorbers are based upon open celled foam impregnated
with a carbon coating. The carbon coating makes the resultant
product lossy at microwave frequencies, indeed acting like a
free space resistor to incoming electromagnetic energy. These
foam products range from 3.2 mm to 6.4 mm for internal cavity
applications and can be several centimeters thick for outdoor
applications. Two main product types are offered by Laird
Technologies
• RFLS- Lossy sheets are uniformly loaded with the carbon
coating and used at 3.2 mm and 6.4 mm thick. They are
supplied as sheet materials and may have PSA applied and
fire retardant coatings.
• RFRET- is a reticulated foam based absorber. The materials are
thicker ranging from 3/8” to 2” in thickness. They can be used
for air filtration and EMI, or on the inside of cabinet doors for
broadband EMI attenuation.
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Figure 1. Variable Gain Broadband Amplifier 100 MHz to 12 GHz
Amplifier Performance
24
23
S21 (magn) [dB]
• Q-Zorb HF (high frequency) is the optimum choice for cavity
resonance problems from 2-18 GHz and higher. The material
is available in thicknesses from .5mm to 3.2 mm and is
supplied in sheets or as die cut components. Both materials
are UL-VO and ROHS compliant. They can be supplied with
pressure sensitive adhesive (PSA) for ease of installation.
22
21
20
19
18
17
16
0
2
4
6
8
Frequency (GHz)
Figure 2. P erformance of Amplifier in Open Condition
and Inside Enclosure
10
12
MICROWAVE ABSORBING MATERIALS
DESIGN GUIDE FOR
COMMERCIAL MICROWAVE ABSORBERS
To improve the performance of the device, Laird Technologies
Q-Zorb microwave absorber was put on the inside cover of the
enclosure. This is a standard way in which absorbers are used.
Q-Zorb is supplied with a pressure sensitive adhesive to allow for
ease of installation. The cover is shown below in Figure 3.
MAGNETIC ABSORBER VS. LOSSY FOAM
In these enclosure applications the designer needs to understand
the tradeoffs between using the magnetic absorber vs the lossy
foam type absorber. The foam absorber is a much more cost
effective solution, provided it will meet the performance goals.
However there are a couple major reasons to use the magnetic
sheet absorbers (Q-Zorb)
• Foam absorbers can breakdown over time causing resistive
particles to drop onto to circuit traces
• Energy along the side walls of cavity are H field (magnetic)
dominated currents. The E field is at a minimum along the
walls and materials with only dielectric loss (resistive foams)
will not perform very well in these applications. The magnetic
absorbers have high H field loss and attenuate these currents.
Figures 5 and 6 below do show the use of a lossy foam absorber
inside of an amplifier cavity.
Figure 3. Enclosure with Q-Zorb PN 2238 Installed
The amplifier was then measured inside the enclosure with the
Q-Zorb in place. The performance of the amplifier now mirrored
the open condition by absorbing the internal reflections and
surface currents. Figure 4 shows this measurement.
Variable Gain Amplifier Performance
24
S21 (magn) [dB]
23
22
21
Figure 5. Amplifier and Enclosure with Lossy Foam Inside
20
19
18
Mini Circuits Amplifier Performance
17
13.0
16
2
4
6
8
10
Frequency (GHz)
Figure 4. Performance of amplifier inside enclosure showing performance
of Absorber Material (PN 2238)
12.5
S21 (magn) [dB]
0
12.0
11.5
11.0
10.5
10.0
0
5
10
15
Frequency (GHz)
Figure 6. Performance in Enclosure and Using Foam Absorber
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MICROWAVE ABSORBING MATERIALS
DESIGN GUIDE FOR
COMMERCIAL MICROWAVE ABSORBERS
TUNED FREQUENCY
VS SURFACE WAVE ABSORBERS
Laird Technologies offers two types of Q-Zorb materials: tuned
frequency and surface wave absorbers. Tuned frequency materials
are used in far field applications such as direct radar reflections
off of an object. Surface wave absorbers are used for high angle
of incidence applications and for cavity noise suppression. Many
design engineers that have a cavity noise problem at a certain
frequency want to use a tuned frequency absorber tuned to that
frequency. However that is not the best performance they can
achieve. Note that the tuned frequency materials offer good
performance at normal angles of incidence, but perform more
DBR vs FGHZ A01 = 0
Figure 7. Tuned Frequency Q-Zorb at 0 degrees Angle of Incidence and at
all angles. Red area shows best performance
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poorly at higher angles of incidence. Inside the cavity noise
generated is at a number of angles of incidence and also a
significant of surface wave energy. The surface wave materials
offer better performance in these applications. The curves below
compare a tuned frequency absorber at normal incidence and
at all angles of incidence. Note the improved bandwidth of the
surface wave loading especially at higher angles of incidence.
The Q-Zorb samples in the Laird Technologies Absorber sample
kit are the surface wave absorber type. They are the best solution
for solving cavity noise problems.
DBR vs FGHZ A01 = 0
Figure 8. S urface Wave Q-Zorb; note broader area of
highest absorption in red
MICROWAVE ABSORBING MATERIALS
DESIGN GUIDE FOR
COMMERCIAL MICROWAVE ABSORBERS
EMI MODELING
SAMPLE KIT
Laird Technologies is a member of the EMC Consortium at
Missouri Science and Technology School, Rolla Missouri. As
part of this consortium Laird Technologies is modeling the use
of absorbers for a variety of applications. The cavity application
discussed above is one of the key areas of investigation. Other
areas include directly placing absorbers on noisy chips, coating
cables to reduce conducted EMI, and use on antennas. Laird
Technologies is working on modeling these applications using
3D modeling software including HFSS, Microwave Studio, and
EZ-FTDT. The Q-Zorb can be modeled as a Debye Oscillator and
directly input into the codes. Laird Technologies can supply these
models to customers for their own computer modeling. A few
examples of this work are shown in the figures below.
To assist the microwave design engineer in the use of Laird
Technologies absorbers, a sample kit containing the different types
of microwave absorbers is offered. The kit contains all three types
of materials including Q-Zorb HF, Q-Zorb HP, and RF Foam.
A description of the sample kit is listed below.
Figure 7. Microwave CST Model of Cable with Q-Zorb Coating
The samples are 6”x4” in size and can be easily cut into specific
shaped pads. There are various thicknesses to evaluate. Generally
speaking the thicker the sample the better it will work at low
frequency. However if you are constrained by thickness, evaluate
the one that will meet the thickness requirements and then test
the electrical properties of the sample. To make even thicker test
samples the samples can be bonded together. This will allow the
designer to evaluate thickness vs performance.
PART
NUMBER
DESCRIPTION
THICKNESS
FREQUENCY
RANGE
2388
Q Zorb™ - RFSW
.020” (0.5 mm)
>10 GHz
2238
Q Zorb™ - RFSW
.040” (1.0 mm)
> 8 GHz
2240
Q Zorb™ - RFSW
.060” (1.5 mm)
> 4 GHz
2242
Q Zorb™ - RFSW
.125” (3.1 mm)
< 4 GHz
3535
CA-19
.006” (0.15 mm)
< 2 GHz
3536
CA-19
.020” (0.5 mm)
< 2 GHz
5206
RF Foam - RFLS
.125” (3.1 mm)
Insertion Loss
Broadband
5092
RF Foam - RFLS
.250” (6.25 mm)
Insertion Loss
Broadband
4106
RF Foam - RFRET
.50” (12.5 mm)
Insertion Loss
Broadband
Figure 8. Simulated Electric Field of Heat Sink on Noisy Chip
Figure 8. Simulated Electric Field of Heat Sink on Noisy Chip with Q-Zorb
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6
MICROWAVE ABSORBING MATERIALS
Q-ZORB ® HF (HIGH FREQUENCY)
SURFACE WAVE ABSORBERS
Q-Zorb® HF surface wave absorbers are thin, magnetically
loaded elastomeric sheets designed to provide attenuation
at high angles of incidence for surface wave attenuation.
They are nominally manufactured in the thickness range
of 0.015" to 0.125" (0,4 mm to 3,2 mm). Q-Zorb® is
silicone-based, meets the UL V0 fire retardant requirement
and is RoHS compliant. Laird Technologies can provide the
material die-cut and with a pressure-sensitive adhesive for
ease of installations. Sheets are offered in nominal sizes of
24" x 24" (609,6 mm x 609,6 mm), although custom sizes
and molded components are available.
APPLICATIONS
FIGURE 1.
FIGURE 3.
The material can be used inside of microwave housings
to reduce internal resonance and to lower the "Q" of
the microwave cavity. They are also effective in isolating
antennas from ground plane reflections. Q-Zorb® can
be used with board-level shielding and other types of
EMI shielding to enhance the shielding effectiveness at
frequencies from 2-40 GHz.
Q-Zorb Typical electrical performance
P/N 2388
0
-1
-5
-3
4
6
-5
-7
-9
10
12
16
18
16
18
-20
-25
-13
-30
2
4
6
8
10
12
14
16
-35
18
Frequency (GHz)
Frequency (GHz)
FIGURE 2.
FIGURE 4.
Q-ZorbSurface
SurfaceWave
Wave 0.060'
Thick
Q-Zorb
0.060"(1.5mm)
(1.5 mm)
Thick
P/N
P/N 2240
2240
2
4
6
8
10
12
14
16
Q-Zorb Typical electrical performance
P/N 2242
18
0
0
-5
Reflection Loss (dB)
-5
-10
-15
-20
-25
-10
-15
-20
-25
-30
-30
-35
-35
Frequency (GHz)
2
4
6
8
10
12
Frequency (GHz)
7
14
-15
-11
-15
Loss (dB)
8
-10
Loss (dB)
Reflection Loss (dB)
2
1
Q-Zorb
Surface
(1.0 mm)
Thick
Q-Zorb
SurfaceWave
Wave 0.040"
0.040' (1.0mm)
Thick
P/N 2238
P/N
2238
All dimensions shown are in inches (millimeters) unless otherwise specified.
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14
MICROWAVE ABSORBING MATERIALS
Q-ZORB ® HF (HIGH FREQUENCY)
SURFACE WAVE ABSORBERS
PART NO.
SIZE
2388
24” x 24”
(Standard)
2388 -.25
12” x 12”
2388 - S
4” x 6”
2238
24” x 24”
(Standard)
2238 -.25
12” x 12”
2238 - S
4” x 6”
2240
2240 -.25
2240 - S
2242
24” x 24”
(Standard)
12” x 12”
THICKNESS
WEIGHT
TEMPERATURE
MAXIMUM
ELECTRICAL
PERFORMANCE
COLOR
BONDING
FIRE RETARDANT
RATING
0.20”
nominal
(.5mm)
.50 lb/sq ft
300 °F
12-18 GHz
Gray
RoHS Compliant
Sulfur-free
Supplied with
3M 9485 PSA
UL V0
.040”
nominal
(1mm)
.94 lb/sq ft
300 °F
8-18 GHz
Gray
Good general
weather and chemical
resistance
Sulfur-free
Supplied with
3M 9485 PSA
UL V0
0.60”
nominal
(1.5mm)
1.2 lb/sq ft
300 °F
4-18 GHz
Excellent for surface
current attenuation
Gray
Good general
weather and chemical
resistance
Sulfur-free
Supplied with
3M 9485 PSA
UL V0
.125”
nominal
(3.2mm)
2.75 lb/
sq ft
300 °F
1-18 GHz
Excellent for surface
current attenuation
Gray
Good general
weather and chemical
resistance
Sulfur-free
Supplied with
3M 9485 PSA
UL V0
4” x 6”
24” x 24”
(Standard)
2242 -.25
12” x 12”
2242 - S
4” x 6”
8
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MICROWAVE ABSORBING MATERIALS
Q-ZORB ® HP (HIGH PERMEABILITY)
ABSORBERS CA-19
Q-Zorb HP product line utilizes special shaped magnetic
fillers in a polymeric binder to produce thin sheets
with excellent low frequency performance. The product
has very high permeabilities along with low frequency
magnetic loss. This allows relatively thin sheets of
material to perform at frequencies below 2 GHz. CA 19
comes in thickness ranges of .006” .15 mm to .020”
.5mm. and is very flexible. The product is available in
rolls 13” wide and any length available. It can be die
cut into specific shapes and is supplied with a pressure
sensitive adhesive backing for ease of use.
APPLICATIONS
CA 19 is used in situations where low frequency
(< 4 GHz) noise problems are occurring. Some
applications include:
• Die cut components placed in microwave cavities
• Place on top of noisy chip to reduce emissions
• Wrapped around cables to reduce conducted
emissions
• Used inside of board level shields to improve
shielding performance
Two standard part numbers of CA 19 are available in the
absorber sample kit. This allows the engineer to see if
this product will help solve any specific EMI problem.
Reflective Loss
TYPICAL PHYSICAL PROPERTIES
Thickness
0
-0.5
R Loss (dB)
3535
0.15mm
-1.0
Size
-1.5
0.50mm
-2.0
3536
3536-S
-2.5
-3.0
Permeability μ’ (1MHz)
-3.5
Electrical resistivity (Ω / □)
-4.0
-4.5
-5.0
0.05
3535-S
0.35
0.64
0.94
1.23
1.53
1.82
2.12
2.41
2.71
3.00
Frequency (GHz)
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.020” x 4”x 6”
37
6 x 1010
3.1
Tensile strength (MPa)
1.9
Hardness (DurometerA)
70 ± 10%
Flammability
All dimensions shown are in inches (millimeters) unless otherwise specified.
.006” x 4” x 6”
.020” x 12” x 13”
Specific gravity
Thermal conductivity
(W / mk)
9
.006” x 12” x 13”
1.0
UL94 V-0
MICROWAVE ABSORBING MATERIALS
RFRET RETICULATED
FOAM ABSORBERS
RFRET is a reticulated foam absorber. Reticulated foam
is an urethane-based foam with a well-defined opencell structure. The cell size can be chosen to optimize
penetration of the conductive coating to which it is
adhered. Laird Technologies uses two separate processes
to produce its reticulated foam absorber. This unique
spray process applies a coating that is graded through
the thickness of the foam. The grading of the coating also
produces an electrical grading that results in a material with
excellent broadband reflectivity reduction.
Laird Technologies also dips RFRET-CV, a convoluted
egg-crate shaped foam. This shaping allows for graded
impedance, which provides broadband reflectivity
reduction. RFRET-CV is produced in thicknesses from
1.5" to 4" (38,1 mm to 101,6 mm) and is used when
broadband performance from 2 to 18 GHz is required.
The product can be supplied with a bonded-on ground
plane and pressure-sensitive adhesive.
Q-Zorb Typical reflectivity performance
P/N 4106
RFRET broadband foam is commonly used around
antennas to provide isolation or side lobe reduction.
It can be die-cut into components for EMI reduction
inside microwave cavities and is used to manufacture
antenna hats and test boxes. It can be encapsulated
into a textile cover for use outdoors and fabricated into
blankets, covers and other components. Recently, it has
been used for a combination air/EMI filter in networking
equipment. The product can be made UL 94 HF1 for such
applications.
TYPICAL PHYSICAL PROPERTIES
0
4106
-5
Reflection Loss (dB)
APPLICATIONS
Size
-10
4106 - S
-15
Thickness
-20
Weight
-2
Temperature Maximum
Color
-30
-35
2
4
6
8
10
12
14
16
18
Environmental
Frequency (GHz)
10
4106 -.25
All dimensions shown are in inches (millimeters) unless otherwise specified.
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24” x 24” (Standard)
12” x 12”
4” x 6”
0.50” nominal
.092 lb/sq ft
250 °F
Gray
Withstands intermittent
exposure to water
without degradation
MICROWAVE ABSORBING MATERIALS
RFLS SINGLE LAYER
"LOSSY" FOAM ABSORBERS
RFLS is a series of single layer "lossy" sheets
produced by dipping lightweight open-celled urethane
foam into a resistive solution. The end product is a
uniform, lightweight, loaded sheet material with a
specified insertion loss at a given frequency. RFLS
offers the lowest cost in microwave absorber products.
Thickness of the sheets range from 0.125" to 1.5"
(3,2 mm to 38,1 mm) and are generally 24" x 24"
(609,6 mm x 609,6 mm). Custom sizes and components
can be fabricated. The insertion loss of the product is
measured in an insertion tunnel over the 2 to 18 GHz
frequency range. Specifications are generally given
at 3 or 10 GHz. The material can be die-cut into
components and supplied with a pressure-sensitive
adhesive for ease of application.
Q-Zorb Typical insertion loss performance
P/N 5092
RFLS sheets are used to lower noise or cavity Q's in
microwave components such as amplifiers, oscillators,
computer housings and wireless equipment. Fire
retardant versions to UL 94 HF1 are also available.
PART NO.
0
5092
-10
Insertion Loss (dB)
APPLICATIONS
SIZE
24” x 24”
(Standard)
-20
5092 -.25
12” x 12”
-30
5092 - S
4” x 6”
-40
5206
-50
-60
24” x 24”
(Standard)
5206 -.25
12” x 12”
5206 - S
4” x 6”
THICKNESS
TEMPERATURE RANGE
COLOR
ENVIRONMENTAL
BONDING
0.25”
nominal
-85 – 250° F
Black
RoHS Compliant
Supplied
with
3M 9485
PSA
0.125”
nominal
-85 – 250° F
Black
RoHS Compliant
Supplied
with 3M
9485 PSA
-70
2
4
6
8
10
12
14
16
18
Frequency (GHz)
NOTES
The physical properties and electrical performance property above are typical for the material, but not intended for use in
specifications or for the acceptance inspection criteria because of variations in testing methods, conditions and configurations.
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11
MICROWAVE ABSORBING MATERIALS
ANALYSIS, TEST AND
PROTOTYPE DEVELOPMENT
Laird Technologies has exceptionally strong research and
development capabilities. Staying at the forefront of microwave
absorber technology requires the ability to perform accurate
measurements of absorber performance and material properties,
the ability to perform computer analysis of new absorber
designs and, finally, the ability to build and test prototype
absorbers and components. Laird Technologies works on
internal product development programs to combine absorbers
with EMI shielding.
CUSTOM ABSORBERS
R&F Products develops a number of custom absorbers
especially for military applications. These applications can be
discussed with the R&F Products applications engineering team
at +1-760-736-7007
RFHC - Honeycomb
Laird Technologies can treat a wide variety of honeycomb
to make broadband absorbers optimized for reflectivity or
insertion loss. These are typically used in antenna applications
or where lightweight structural properties are desired.
Millimeter Wave Absorbers
As both military and commercial systems move to higher
frequencies, there is a growing need for absorbers that work to
100 GHz. Laird Technologies has designs for specific resonant
frequencies in the millimeter wave band, as well as broadband
designs. Laird Technologies is working on several military
programs at these frequencies, as well as automotive radars
and millimeter wave communications programs.
RFRIGID - Foam
RFRIGID is a rigid foam absorber. It is based upon RFRET as the
active absorbing material. The RFRET is subsequently filled with
closed cell foam to make a rigid material. It is generally used
as in antenna applications as a housing or barrier from other
electronic systems. Thicknesses from .25” to 2” are available in
flat sheets or custom molded shapes
Transmission tunnel and microwave test equipment
for material property measurement.
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Computer controlled network analyzer provides amplitude
and phase measurements on microwave absorbers.
ABSORBER BOARD-LEVEL SHIELDING (ABLS)
FIGURE 1.
Increasing use of printed circuit boards in complex electronics
requires unique shielding solutions. Laird Technologies has
developed a near field measurement to accurately determine the
effectiveness of board-level shielding. Several Laird Technologies
board-level shields have been characterized using this technique.
Laird Technologies has further enhanced performance at greater
than 2 GHz by adding a microwave absorber to the board-level
shield. Further work has been completed on FlomericsTM FLOEMC to analytically investigate board-level shields performance
improvement using absorbers at high frequency.
THERMALLY CONDUCTIVE ABSORBERS –
KOOL-ZORB
VBROP can optimize absorber performance at various frequencies
and angles of incidence.
Laird Technologies is developing thermally conductive microwave
absorbing materials. These can be used as thermal pads between
chips and heatsinks, allowing conduction of heat and dissipation of
EMI. Initial testing and modeling has shown this to be an effective
solution to heat sink radiation from noisy chips.
MU EPSILON MEASUREMENT CAPABILITIES
Laird Technologies has a network analyzer to make amplitude
and phase measurements from 130 MHz to 20 GHz. Laird
Technologies also has a reflectivity arch, transmission tunnel and
a variety of coaxial, wave-guide and other test equipment to
determine intrinsic electrical properties of absorber materials.
This ability has enabled Laird Technologies to build a database
that customers can use to design new absorbers and analyze
their performance in different situations.
Absorber Board-level Shield (ABLS)
ANALYTICAL SOFTWARE VBROP
VBROP is a versatile Windows® 95/98/NT-based optimizer of
multi-layered stacks for reflection or maximum transmission at
specified frequencies, angle of incidence and polarization. The
visual basic front-end makes the software extremely user friendly,
with interactive analysis of layer properties versus performance. It is
useful for the design, optimization and detailed performance analysis
of RAM, RAS, radomes and microwave windows.
13
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global solutions: local support
TM
Americas: +1.800.634.2673
Europe: +420.488.575277
ASEAN: +65.6243.8022
China: +86.757.2563.8860
India: +91.80.40740.400 x448
Japan: +81.45.473.6808
Korea: +82.10.8706.7469
Taiwan: +886.2.22901234 x163
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ANTENNAS & RECEPTION
WIRELESS REMOTE CONTROL
EMI SOLUTIONS
THERMAL MANAGEMENT
WIRELESS M2M & TELEMATICS
EMI-CAT-MICROABSORB 0112
Any information furnished by Laird Technologies, Inc. and its agents is believed to be accurate and reliable. All specifications are subject to change without
notice. Responsibility for the use and application of Laird Technologies materials rests with the end user, since Laird Technologies and its agents cannot be
aware of all potential uses. Laird Technologies makes no warranties as to the fitness, merchantability or suitability of any Laird Technologies materials or
products for any specific or general uses. Laird Technologies shall not be liable for incidental or consequential damages of any kind. All Laird Technologies
products are sold pursuant to the Laird Technologies’ Terms and Conditions of sale in effect from time to time, a copy of which will be furnished upon
request. © Copyright 2011 Laird Technologies, Inc. All Rights Reserved. Laird, Laird Technologies, the Laird Technologies Logo, and other marks are trade
marks or registered trade marks of Laird Technologies, Inc. or an affiliate company thereof. Other product or service names may be the property of third
parties. Nothing herein provides a license under any Laird Technologies or any third party intellectual property rights.