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Antenna Modeling Design System (AMDS) - a 3-D dedicated design and modeling tool for antennas and antenna systems.
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AMDS is the only 3D EM antenna design tool that addresses the challenges of fast changing wireless appliance design dictated by consumer aesthetic and feature appetite. Innovative uncompromising technology efficiently imports, meshes and simulates the entire wireless appliance within its surrounding real-word environment.
It enables you to pass regulatory and operator compliance such as Over-The-Air-performance and SAR (Specific Absorption Rate) and HAC (Hearing Aid Compatibility) before going into expensive physical testing. » details
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Click on the following links for complete information.
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Application Highlights - Wireless Appliances
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Conformal GSM and Bluetooth antenna on ground plane (bottom right). Complete wireless appliance (bottom left). Simulate the effect of hand and head on the antenna performance (and vice-versa) (top left and right).
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Growth is driven by consumers replacing existing devices with new ones that offer added functions and longer battery life in smaller stylish housings. Manufacturers are competing to offer these at lower prices by outsourcing and modular designs. However, this business model impacts R&D's ability to ensure consistent device quality and performance.
Wireless appliance designs face the challenges of fitting multi-band antennas into small stylish housings to entice consumers and yet have to comply with regulatory, operator and end-user demands for radiation safety and performance quality.
AMDS is the only 3D-EM antenna design tool specifically developed to enable antenna and product industrial designers to overcome these challenges.
It cuts subsequent modeling and simulation setup by more than 70% compared to some of its competitors, making simulation the evident choice for the antenna designer.
It efficiently imports, meshes and simulates the entire wireless appliance including its surrounding real-world environment to analyze compliance standards such as SAR (Specific Absorption Rate), HAC (Hearing Aid Compatibility), and MIMO (Multiple-Input, Multiple Output) antenna diversity.
It cuts design cycle time and risks before going into slow and expensive physical testing.
The AMDS 3-D EM feature set includes:
- efficient importation of CAD data from product designers, reducing or eliminating EM design iterations;
- verification of antenna compliance with legal and operational standards such as SAR, HAC, Over-the-Air Performance and MIMO;
- optimization of MIMO performance by analyzing antenna placement and diversity for the entire physical wireless appliance; and
- optimization of device performance by simulating its real-world interaction with the human body.
AMDS enables you to simulate antenna structure and placement within the appliance in the presence of real world proximity effects of the human head and hand to determine parameters such as detuning and sensitivity. This translates to meeting both regulatory and end-user performance requirements before the bottleneck in prototype testing which delays time-to-market.
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Product Details
AMDS is a Full-Wave Three-Dimensional EM Solver based on the Finite Difference Time Domain (FDTD) Method
FDTD technology provides a full wave solution of the 3D EM problem to handle arbitrarily shaped 3D metals and dielectrics with high complexity.
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Maxwell's Equations and
Typical Discretized FDTD Implementation
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The inherent simplicity of its meshing and equation set has the benefit of:
- Computational efficiency over FEM (finite element method) or MoM (method of moment) techniques.
- Fast wideband analysis in a single simulation run.
- Acceleration with hardware graphical processor cards and multithreading.
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AMDS Design Flow
Why Choose AMDS for Antenna Physical Placement Design?
Mobile Phone Design,
Imported in AMDS
AMDS guarantees efficient design iteration between the Antenna and Industrial product designer.
AMDS intelligent CAD data interface seamlessly imports and exports complete wireless appliance structure created by industry-standard CAD packages.
Unlike traditional 3DEM tool where each import requires at least half a day of manual simulation parameter redefinition, AMDS's hierarchical import algorithm requires only a first-time definition. Thereafter, physical product shape iterations and antenna placement analyses can be performed repeatedly without the time and error of manual redefinition. It will let you save up to 70% of model and setup time compared to our competitors.
The AMDS state-of-the-art design management functionality allows smooth iterations between antenna and industrial designers to create the latest look of high-performance wireless appliances.
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Simulate Without Compromise
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Conformal GSM and Bluetooth Antenna
Meshed with Shielding, Battery, and
Ground Planes (mesh size 380 MB)
Today's wireless appliance can include displays, cameras, speakers, batteries and multi-antenna systems for phone, Bluetooth, WLAN, radio and GPS.
All these must be considered in EM performance simulations, but antenna designers often comprise accuracy with increased failure risk by simplifying the problem to fit within acceptable computation time and memory.
However, this forces them to rely on physical tests which add severe business risks by delaying time-to-market.
AMDS eliminates the compromise on accuracy by allowing you to efficiently import, mesh and simulate not just the entire wireless appliance but also its surrounding real world environment of proximity to the human body.
E Field on 2 Perpendicular Surfaces
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Speed Through Your Design Cycle!
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In this example of the complete cell phone, you can perform the entire wideband simulations in the order of 15 minutes with a memory consumption of less than 400 MB.
This fast cycle time invites you to simulate various setups of your phone to assure optimal performance in all circumstances.
AMDS comes with standard ability to take advantage of the latest evolution in multiprocessor and multi core platforms for even faster computation. You can also use MPI (message Passing Interface) technology to run AMDS on compute farms to solve very large problems.
AMDS makes use of the latest evolutions in hardware acceleration. The speed-up in simulation time can go up to 35x compared to that of a similar computer without the Accelerated Hardware.
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Optimize for Optimal Performance!
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Use our new Python scripting functionality to sweep the antenna parameters and optimize your antenna performance inside the wireless device.
AMDS makes it possible to place your antenna inside a complete cell phone and optimize your antenna performance taking into account the influence of all components and human interaction, while respecting the constraints imposed by the industrial design.
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Pass the regulations AND the reality test first time: maximize your customers' experience.
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S11 Parameters showing the Influence of
Hand and Head on the Bluetooth and
GSM Antenna Performance
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One Gram Average SAR in
Plane of Peak Temperature Rise
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First pass compliance with regulatory AND real-world performance to maximize your customers' product experience.
AMDS simulations and post-processor functionality have been fine-tuned to the needs of brand-named mobile phone manufacturers.
A wide set of human-body phantoms containing the latest SAM (Standard Anthropomorphic Model) standards complements AMDS SAR and bio-temperature calculations to meet the highest benchmark specifications in the industry.
The customer is the final judge on your appliance. Submit your wireless appliance to any kind of reality situation (handbag, pocket, etc.) while still making efficient usage of computing resources.
The simulation time for a handheld wireless appliance next to the SAM head is less than 30 minutes.
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Use the new AMDS version 2007.4 to make your handheld wireless device pass the Hearing Aid Compatibility (HAC) tests.
You can now use AMDS to evaluate the hearing aid compatibility (HAC) between Wireless Communication Devices and Hearing Aids. Our software is functioning according to the IEEE American National Standard Methods of Measurement of Compatibility (ANSI C63.19-2006).
After simulation a single-screen evaluation tool, will give you clear indication of HAC performance.
Look at total, tangential, and normal electric/magnetic fields on the HAC Scan Area To get better insights in designing your mobile phone to comply with a higher HAC category.
Be prepared for the next level of complexity!
The example below illustrates the use of scripting functionality to calculate the far-field for a 25x25 element array.
Here the scripting funtionality enables you to automate the creation of the basic patch element and feed wire, then multiply and position the patch elements over the array. The mesh is automatically set and excitation sources with the appropriate phase shifts are attached to each feed wire.
You can use the script to identify the data that needs to be saved and run the simulation. This broadband simulation example ran 1 hour and 3 minutes on an accelerated workstation.
The script is also used to steer the beam direction by changing the phase shift.
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What's New
AMDS 2007.6 — Now linked to ADS
Create ADS design kits (simulation libraries) from within AMDS. Link your 3D EM designs to the full ADS circuit and system simulation set.
Schematic capture in ADS, showing the Palette of the mobile phone design kit (left), the Smith Chart utility and a component representing the S-parameter set from a 3D EM simulation of a mobile phone with hand and head.
Use Our Intuitive ADS Design Guides to match your Antennas to The real world
Many antennas are designed in isolation. Once the total device is assembled, their performance deteriorates. You can now bring the real world environment into our circuit simulator and use our Smith Chart Utility or other intuitive design guides to synthesize matching circuits.
Click here to view full sized image.
The Isolated GSM antenna is detuned after introducing into a mobile phone (unmatched S11 parameters, blue curve), using the Smith Chart Utility inside ADS, you can easily define the matching network properties. The matched antenna shows a 30dB performance improvement (Matched S11 parameters Red curve)
Put Yourself in the RF front seat: Use Advanced Libraries to Match your antenna’s in Real Time Through Adaptive Tuning
Antennas of handheld devices are detuned through human manipulation. Use the ADS libraries with the latest technologies such as tunable BST or MEMS devices to simulate real time adaptive antenna matching.
Click here to view full sized image.
The capacitive value of a BST (ferroelectric material called Barium Strontium Titanate) device can be controlled by applying a different DC bias voltage. Within ADS we run an optimization routine to minimize the S11 value of the antenna within a given frequency band. When the antenna performance changes through human manipulation (S11 parameters move from the pink to the blue curve), the optimization procedure drives the DC voltage and changes the values of the capacities in the tuning circuit. As such we adaptively match the antenna to the new operating conditions (Adaptively Matched S11 parameters Red curve).
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Feature Highlights
AMDS Feature Highlights
- Time-domain analysis provides results for a wide band of multiple frequency points in a single computation.
- Data available in frequency and time domain to better optimize launches and transitions.
- Impedance, antenna patterns, system and radiation efficiency, Standing Wave Ratio (SWR), S-parameters, Specific Absorption Rate (SAR), radar cross section, antenna gain, coupling, and diversity for EM analysis of complete systems.
- ADS EM/Circuit Co-design
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CAD Import/Export
CAD Import/Export formats support the most popular programs available today:
- SAT Files
- STEP Files
- IGES Files
- Pro-E Files
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Simulation Engine Features
Materials
- Lossy Dielectric/Magnetic
- Frequency-Dependent Dielectric/Magnetic
- Anisotropic Magnetized Ferrite
- Anisotropic Dielectric (Full Tensor)
- Thin Wires with Different Radii
- Surface Impedance
- Non-linear Dielectric
- Non-linear Magnetic
Sources/Loads/Ports
- Voltage/Current Sources with Series/Parallel RLC & Independent time delay for multiple sources
- Passive/Active Ports
- Non-Linear Capacitors
- Non-Linear Diodes with variable parameters
- Waveguide excitation
- Incident Plane Wave
- Sine and Modulated Gaussian Beam
- Static Solver for Initial Condition Charging
- Time-controlled & Programmable On/Off Switches
- Multi-Port S-parameters vs. Frequency
- Multi-Port S-parameters - Steady State
- Multi-Port Calibration
- Port Impedance vs. Frequency
- Port Impedance - Steady State
- VSWR
Far Zone Data
- Transient Far Zone - Specific Angles
- Steady State Far Zone Patterns
- directivity, gain, polarization, Ludwig ii/iii transforms
- axial ratio and Ludwig polarization
- Antenna Correlation
- Circular Polarization
- Radar Cross Section
- Total Field and Scattered Field plane wave
- 3D Far Zone Patterns
Special Boundary Conditions
- Liao, PMC, PEC, Outer Boundaries
- Periodic Boundary conditions with arbitrary phases shift
- PML Outer Boundaries with Adjustable Thickness
Parallelization and Speed-Up
- Automatic Convergence Check for Optimum Run Times
- Running Discrete Fourier Transform
- Multithreading (4x, 8x, 16x, . . .)
- MPI Multiprocessor (Distributed Memory Clusters)
Biological Calculations
- Specific Absorption Rate (SAR)
- Thermal simulation using the bio-heat equation
- Calculate 1 and 10 grams SAR Averages Per C95.3
- Whole Body SAR Average
- Location of Peak SARs
- Adjust SAR Levels for Specified Input Power
- Planes of SAR for Color Display
- SAM Phantoms CAD file
- Rotating B fields for MRI calculations
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Geometric Modeling Features
Geometry Generation
- Dimension-Based 3D Solid Modeler
- Dimension-Based 2D Modeler
- Copy-Move-Scale-Rotate
- 3D Rectangular Arrays of Objects
- 3D Polar Arrays of Objects
- Shells Solid Objects
- Boolean Operations
- Mesh View
- Mesh Edit
- Sweep/Rotate/Extrude Bodies of Revolution
- 2D Scripting/Macros
CAD Import/Export
- Hierarchical CAD Management
- Import SAT Files
- Scale/Position Imported Objects
- 3D conformal Voxel-Based importing
- Selective Import of Multiple Objects in CAD File
Meshing/Viewing
- Fast Meshing Algorithm (FMA)
- Automatic/Manual Control of Mesh Parameters
- Automatically determine if meshed geometry objects are in contact
- Fast 3D Mesh Viewing
Post-Processing
- Hearing Aid Compatibility
- Color Display of 2D Fields/Currents
- Color Display of 2D Steady State E, B Fields
- Color Display of 3D Steady State Surface Currents
- Color Display of 2D SAR Values
- Export Geometry/Field Display to JPG File
- Movie Sequence of Transient Fields vs. Time
- Export Movie Sequence as an MPEG File
- Near Zone Fields/Currents vs. Time
- Impedance, S-parameters vs. Frequency
- Plot results from other AMDS Projects
- Export Plots to Postscript Files
- Polar Plot Antenna Patterns
- Smith Chart Impedance Plots
- FFT of Transient Results
- Export Touchstone Files
- Export of ADS Designkits
Scripting
- Python Standard: http://www.python.org/
- Parameter Sweep and Optimization
- Advanced Post-Processing
- Design Flow Automation
- User Interface (UI) Customization
- Automated search for optimal simulation settings
- Access to extensive libraries for mathematical post-processing
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Recent Enhancements
Simulation Engine
- 64- bit simulator
- 32- bit simulator makes use of SSE2
- improved simulator function
CAD Import/Export
- improved capability for importing and exporting CAD formats
- hierarchical import improvements
Scripting
- Python standard: http://www.python.org/
- parameter sweep and optimization
- advanced post-processing
- design flow automation
- UI customization
- automated search for optimal simulation settings
- access to extensive libraries for mathematical post-processing
Sources/Loads/Ports
- calibrated ports
- voltage/current measurement
- automated multi-port S-parameter simulations
Post-Processing
- Hearing Aid Compatibility
- antenna diversity
- directivity and total gain plots
- improvements in data manipulation when plotting
GUI/Installation
- mesh view plane indicators in cross-section
- improvements visualization port feeds
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Ordering and Configuration
To request immediate sales assistance - for help choosing the best system; for product configuration and integration details; to request telephone assistance or an on-site demo of the software; or to request a price quotation - click on the following link:
For sales assistance by telephone, click on the following link for the telephone numbers in your area:
Available Configurations and Options
As is shown in the following configuration diagram, the W2101L Antenna Modeling System includes all of the features listed in the section titled "Feature Highlights" except those that are identified as options.
Optional features can be obtained by adding any or all of the following:
- W2110 AMDS Translator Bundle License. Adds the ability to import STEP, IGES, Pro-E, DXF, and STL files, and to export SAT, STEP, and IGES files.
- W2105 AMDS Hardware Acceleration Library License. Adds hardware acceleration software libraries.
- W2115H Acceleware Accelerator Board for AMDS. Adds the Acceleware Accelerator Board for AMDS. » details
- W2116H Acceleware ClusterInABox Dual for AMDS. Adds the Acceleware ClusterInABox Dual for AMDS. » details
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World-Class Support, Training, and Services
All Agilent EEsof EDA products are backed by a world-class team of experienced application and technical support engineers who are dedicated to providing the right software, support, and consulting solutions to increase engineering productivity and long-term success. We offer worldwide, local-language, technical support via telephone, fax, e-mail, and the worldwide web.
In addition, our web-based Agilent EEsof Knowledge Center is an around-the-clock resource for comprehensive support information and downloadable examples for all our products. It hosts software updates and has a tracking feature that makes it easy for you to submit and manage support cases and related enhancement requests. The search feature lets you quickly find available solutions and sort through them by date, popularity, or user ratings. The Knowledge Center also contains product discussion forums that put you in touch with other users, support engineers, and product developers. And, you can get training when and where you want it through e-learning short courses and technical information sessions.
Every team's design flow has aspects that are unique. To save time and get individual attention focused on your application, take advantage of our consulting solution services. We offer complete consulting in MMIC, RFIC, board/module, or system-level design.
Contact your Agilent EEsof EDA field sales engineer for more information about AMDS or for a free evaluation.
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