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 楼主| 发表于 2008-3-7 19:56:00 | 显示全部楼层

Ansoft Releases Nexxim v4 and Ansoft Designer v4
New technologies enable efficient design of modern high-speed electronics

PITTSBURGH - March 6, 2008 - Ansoft Corporation (NASDAQ: ANST) has released new versions of Nexxim? the company's high-capacity circuit simulation software, and Ansoft Designer? its integrated schematic and design management software. The products include new statistical analysis and transient simulation capabilities that allow engineers to rapidly simulate high-speed serial channel behavior. This eliminates prototype iterations that require expensive test equipment and multiple spins that delay time-to-market.

Modern electronic products use gigabit-speed serial links to move large quantities of digital data across today's telecommunication, high-definition video, gaming and data storage systems. Ansoft's electromagnetic modeling and advanced circuit simulation are essential for designing these data links. Serial link standards, such as PCI Express, Serial ATA, Gigabit Ethernet and HDMI have very stringent accuracy requirements, allowing only one bit in billions to be in error. Previous methods for simulating link performance required long simulation times to capture these low bit error rates (BERs). The new technologies give engineers methods to rapidly predict system-level performance with eye diagram plots and BER curves.

Nexxim v4 features VerifEye? a new methodology for eye analysis of serial links using statistical methods that maintain accuracy while offering major reductions in run time compared to conventional transient methods. These statistical transient analysis tools represent the most practicable means to test for the low bit error rates needed by today's multi-Gb/s channel designers.

Nexxim v4 also features QuickEye? a new Ansoft-only fast eye diagram analysis method that allows input of very long, user-defined bit streams. This analysis allows engineers to identify specific bit sequences that cause bit errors.

Additionally, Nexxim v4 features new mixed system-level behavioral simulation with transistor-level transient simulation. This hybrid integration enables designers to simulate a complete system consisting of various levels of abstraction much more quickly than in simulators that operate at only the transistor level.

Ansoft Designer v4 features a new "push excitation" feature and enhanced dynamic links to Nexxim and to Ansoft's leading electromagnetic field simulation tools HFSS? SIwave?and Q3D Extractor? These products combine to allow engineers to accurately predict signal integrity effects and EMI/EMC performance of advanced electronic systems, including gigabit communication channels, multi-function high-speed wireless systems and sophisticated microwave systems.

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 楼主| 发表于 2008-3-7 19:59:00 | 显示全部楼层

New in Ansoft Designer v4 
 
"Push excitations" link from Nexxim to HFSS and SIwave.
Dynamic link to the 2D Extractor tool.
Revised user interface for even better usability.
Reusable report templates.
Eye diagrams have been significantly enhanced.
Reporter functionality is now available through scripting.
The user has access to a wide-ranging suite of "ranged functions" for better data reduction. Examples include maximum, minimum, rise time, and overshoot.
PlanarEM engine runs in 64-bit mode and supports multiple processors.
Distributed Solve Option (DSO) available for parametric sweeps.
Frequency-dependent materials are now supported in PlanarEM.

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 楼主| 发表于 2008-3-7 20:01:00 | 显示全部楼层

New in Nexxim v4


VerifEye? a new methodology for eye analysis of serial links using statistical methods that maintains accuracy while offering major reductions in run time compared to conventional transient methods. These statistical transient analysis tools represent the most practicable means to test for the low bit-error rates needed by today's multi-Gb/s channel designers.
QuickEye? a new Ansoft-only fast eye diagram analysis method that allows input of very long, user-defined bitstreams. This analysis allows engineers to identify specific bit sequences that cause bit errors.
Mixed system-level behavioral simulation with transistor-level transient simulation. This hybrid integration enables designers to simulate a complete system consisting of various levels of abstraction much more quickly than in simulators that operate at only the transistor level.
C++ model editing wizard
Ability to compute the reciprocal response of subcircuits, Nports and Field Solver elements to de-embed the effects of test fixtures.
Transient noise analysis
Transmission line tool
Nexxim's Advantages:

Dynamic links to state-of-the-art EM analyses
Electromagnetic effects significantly impact circuit behavior at high frequencies of operation. Nexxim's dynamic links to HFSS, SIwave and Q3D Extractor allow the seamless integration of these effects into circuit design. In addition, Nexxim's high simulation capacity handles the additional complexity and circuit size introduced by the electromagnetic effects.

Statistical analysis and transient simulation
New features VerifEye and QuickEye provide statistical analysis and transient simulation capabilities that allow engineers to rapidly characterize high-speed serial channels.

Time-domain simulation using frequency-domain S-parameters
Nexxim's inherent advantages in speed and capacity are enhanced with automatic enforcement of passivity and causality to accurately model and simulate physical behavior in the time domain (such as that of complex interconnects in signal integrity applications).

Integration with system-level design and user models
Nexxim allows the seamless integration of behavioral models and user-defined models (Verilog-A, C++, IBIS) for handling the interaction of analog and digital components within a single simulation.

Consistency of results across domains
Time-domain (transient) and frequency-domain (harmonic balance, AC) simulations are performed using the same circuit netlist and the same device models across analyses, guaranteeing that results in the different domains are consistent.

Higher capacity at increased simulation speed
Cutting-edge numerical algorithms and software engineering provide Nexxim with the capacity and speed to handle simulation of high-performance RF devices that have very large transistor/device counts and high harmonic content without sacrificing simulation accuracy.

Robust Convergence
Nexxim includes robust algorithms across all analysis domains (DC, time, and frequency) that ensure convergence even as circuit size, harmonic content and circuit nonlinearities increase.

Model compatibility
Nexxim natively supports HSPICE?and Spectre?device models and netlist formats, providing full foundry device model support. Hence, Nexxim seamlessly integrates within and augments existing design flows.

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 楼主| 发表于 2008-3-7 20:12:00 | 显示全部楼层

呵呵,我话音刚落,Ansoft就马上跟进了,看来还是要适当批评一下,有竞争,才有发展,我们才能用上更先进的软件。

可以这么说,Ansoft Designer V4、Nexxim V4主要是针对高速串行通道的仿真而来的,更新的核心在Nexxim V4中,两个关键组件是VerifEye 和 QuickEye,VerifEye是基于统计方法来分析通道响应的,我估计应该类似StatEye,之前Agilent已经在ADS2006A中实现,QuickEye是快速眼图仿真,之前Cadence Allegro、Mentor Hyperlynx中也有类似功能,但都比较初级。Nexxim V4还加强了眼图的后处理能力,能直接给出眼图的基本参数,还有峰峰抖动,和均方根抖动,之前Agilent ADS2006A已经实现这样的功能,而且ADS还能进行抖动的分解,看来Nexxim目前还没有这个功能,是将来努力的方向,与ADS竞争的武器,Nexxim的另一个不足之处是缺乏系统级的通道建模、分析能力。

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 楼主| 发表于 2008-4-1 08:46:00 | 显示全部楼层

ANSYS, Inc. Signs Definitive Agreement to Acquire Ansoft Corporation

Acquisition Broadens Capabilities as a Global Innovator of Simulation Software

SOUTHPOINTE, Pa. and PITTSBURGH, Pa., March 31, 2008 /Prime Newswire/ -- ANSYS, Inc. (NASDAQ: ANSS), a global innovator of simulation software and technologies designed to optimize product development processes, and Ansoft Corporation (NASDAQ: ANST), a global provider of Electronic Design Automation (EDA) software, announced today that they signed a definitive agreement whereby ANSYS will acquire Ansoft for a purchase price of approximately $832 million in a mix of cash and ANSYS common stock. The strategic, complementary business combination of ANSYS and Ansoft will create the leading provider of 'best-in-class' simulation capabilities, with combined trailing 12-month revenues of $485 million. When completed, ANSYS currently anticipates that the transaction will be modestly accretive to non-GAAP earnings per share in its first full year of combined operations.

Under the terms of the definitive agreement, which was unanimously approved by the Boards of Directors of both companies, Ansoft stockholders will receive $16.25 in cash and 0.431882 shares of ANSYS common stock for each outstanding Ansoft share. Based on the 10-day trailing average closing price of ANSYS common stock, the implied value is $32.50 per Ansoft share. ANSYS will issue an aggregate of approximately 11.1 million shares of its common stock and pay an aggregate of approximately $416 million in cash in the transaction. ANSYS intends to fund the cash portion of the transaction with approximately $70 million of cash on-hand from the combined organization and approximately $346 million from the proceeds of a $450 million unsecured senior term loan credit facility. ANSYS' current lender, Bank of America, N.A., has committed to fully underwriting the credit facility and Banc of America Securities LLC has agreed to act as lead arranger. The pricing of the senior credit facility is tier based with limited market flexibility on yields and structure to facilitate its syndication. The transaction, currently anticipated to close in the second calendar quarter of 2008, is subject to customary closing conditions, regulatory approvals and approval by the Ansoft stockholders. In connection with the execution of the definitive agreement, certain Ansoft stockholders, who collectively beneficially own approximately 16% of Ansoft, entered into voting agreements agreeing to vote for the proposed transaction. Upon the closing of the transaction, Ansoft stockholders will own approximately 12% of the combined company on a pro forma basis. After the closing, Ansoft will become a wholly-owned subsidiary of ANSYS and Ansoft common stock will cease trading on Nasdaq.

Ansoft is a leading developer of high-performance EDA software. The software is based on more than 25 years of research and development by world-renowned experts in electromagnetics, circuit and system simulation. Engineers use Ansoft products to simulate high-performance electronics designs found in mobile communication and internet devices, broadband networking components and systems, integrated circuits, printed circuit boards and electromechanical systems. The company's products are used by blue chip companies as well as small and medium sized enterprises around the world.

The acquisition of Ansoft is ANSYS' first foray into the broader EDA software industry and will enhance the breadth, functionality, usability and interoperability of the combined ANSYS portfolio of engineering simulation solutions. The combination is expected to increase operational efficiency and lower design and engineering costs for customers, and accelerate development and delivery of new and innovative products to the marketplace. The complementary combination of Ansoft's and ANSYS' software products and services is expected to give ANSYS one of the most complete, independent engineering simulation software offerings in the industry, reaffirming and strengthening ANSYS' commitment to open interface and flexible simulation solutions that are primarily driven by customer demand, flexibility and choice. With over 40 direct sales offices and 21 development centers on three continents, the combined company will employ approximately 1,700 people.

"We are very excited about the state-of-the-art technologies that Ansoft adds to ANSYS' simulation capabilities," said James E. Cashman III, President and Chief Executive Officer of ANSYS. "Both companies have a strong commitment to their customers and employees, and share a passion for the development of innovative products and services and a history of world-class execution. This combination will further strengthen these values and will allow us to better serve our customers by accelerating the delivery of comprehensive, customer-driven engineering simulation solutions and by enabling us to provide high quality support throughout the world. We see this as an opportunity to add highly complementary physics that address the convergence of mechanical and electrical engineering product design and development. We are also excited about bringing two great Pittsburgh-based companies together to create an exciting opportunity for aspiring engineers, computer scientists and professionals to join us in our mission to democratize the use of simulation across the globe."

"The simulation technologies that Ansoft adds complement and broaden the existing ANSYS portfolio of simulation solutions, enabling the combined company to deliver the integration, efficiency, functionality and interoperability required by customers across a broad range of industries and applications. With trailing 12-month revenues ending January 31, 2008 of $98 million, Ansoft brings a combination of new software revenue growth and strong operating margins. Ansoft's solid revenue and customer base, combined with its profitability, should enable the transaction to be modestly accretive to non-GAAP earnings per share in our first full year of combined operations and accretive beyond that," stated Cashman.

"This merger brings together two great companies with a shared vision and strong engineering focus," said Dr. Zoltan J. Cendes, the founder, Chairman of the Board and Chief Technology Officer of Ansoft. "The combination of our R&D teams, complementary technological strengths and our commitment to quality will enhance our ability to deliver comprehensive, innovative, world-class simulation software technologies that customers demand." In conjunction with this transaction, Dr. Cendes will join ANSYS' Board of Directors following the closing of the transaction.

"The combination of Ansoft's extensive portfolio of electromagnetics, circuit and systems simulation solutions with ANSYS' existing simulation capabilities creates a 'best of breed' company that will continue to lead the evolution and innovation of engineering simulation by enabling customers to improve their product development processes, eliminate physical prototypes, reduce time-to-market for new products and improve product innovation and performance," said Nicholas Csendes, President and Chief Executive Officer of Ansoft.

Integration

The two Pittsburgh-based companies are developing integration plans that leverage and build on the cultural similarities and the best practices from each team. ANSYS will provide additional details relative to the acquisition and integration activities subsequent to the closing of the transaction.

Due to the absence at this time of estimates of the acquisition-related impact of purchase accounting adjustments, including the allocation of the purchase price among goodwill, in-process R&D, other intangibles and equity-based compensation expenses related to SFAS 123R, ANSYS is currently unable to provide GAAP estimates on future earnings. The company intends to provide updated GAAP and non-GAAP financial guidance after the closing of the transaction.

Advisors

In connection with the transaction, Deutsche Bank Securities Inc. is acting as exclusive financial advisor to Ansoft, and Wilson Sonsini Goodrich & Rosati, Professional Corporation is acting as legal counsel. Goodwin Procter LLP is acting as legal counsel to ANSYS.

Conference Call and Webcast

ANSYS will hold a conference call/webcast today to discuss this announcement. Please call in five to ten minutes before the start of the call to make sure you are able to access the slides and audio.

 Conference Call Date:  March 31, 2008
Time: 11:30 a.m. Eastern (8:30 a.m. Pacific)
Toll free Dial in #: (888) 811-5421 (US and Canada), (913) 312-6693 (International)
Passcode: 26797 or "ANSYS"


To view the slide presentation, paste the following link into your browser:

Meeting URL: http://www.livemeeting.com/cc/vcc/join
Meeting ID: w9325734
Meeting Key: A932573
Role: Attendee


The call will be recorded and a replay will be available approximately two hours after the call ends. The replay will be available for one week by dialing 888-203-1112 or 719-457-0820 and the passcode is "ANSYS" or "26797". The archived webcast can be accessed, along with other financial information, on ANSYS' website at http://www.ansys.com/corporate/investors.asp. A presentation describing the transaction will be made available on the ANSYS website at www.ansys.com under the Investors tab.

About ANSYS, Inc.

ANSYS, Inc., founded in 1970, develops and globally markets engineering simulation software and technologies widely used by engineers and designers across a broad spectrum of industries. ANSYS focuses on the development of open and flexible solutions that enable users to analyze designs directly on the desktop, providing a common platform for fast, efficient and cost-conscious product development, from design concept to final-stage testing and validation. ANSYS and its global network of channel partners provide sales, support and training for customers. Headquartered in Canonsburg, Pennsylvania, U.S.A., with more than 40 strategic sales locations throughout the world, ANSYS and its subsidiaries employ approximately 1,400 people and distribute ANSYS products through a network of channel partners in over 40 countries. Visit http://www.ansys.com for more information.

About Ansoft Corporation

Ansoft Corporation is a leading developer of high performance EDA software. The software is based on more than twenty-five years of research and development from the world's leading experts in electromagnetics, circuit, and system simulation. Companies throughout the world rely on Ansoft's software to achieve first-pass system success when designing mobile communication and internet devices, broadband networking components and systems, integrated circuits (ICs), printed circuit boards (PCBs) and electromechanical systems. Headquartered in Pittsburgh, Pennsylvania, U.S.A., with locations throughout the world, Ansoft and its subsidiaries employ approximately 300 people. Visit http://www.ansoft.com for more information.

Important Additional Information to be Filed with the SEC

In connection with the merger, ANSYS intends to file with the SEC a registration statement on Form S-4, which will include a prospectus/proxy statement of ANSYS and Ansoft and other relevant materials in connection with the proposed transactions. Investors and security holders of ANSYS and Ansoft are urged to read the prospectus/proxy statement and the other relevant material when they become available because they will contain important information about ANSYS, Ansoft and the proposed transaction. The prospectus/proxy statement and other relevant materials (when they become available), and any and all documents filed by ANSYS or Ansoft with the SEC, may be obtained free of charge at the SEC's web site at www.sec.gov. In addition, investors and security holders may obtain free copies of the documents filed with the SEC by ANSYS by directing a written request to ANSYS, Inc., Southpointe, 275 Technology Drive, Canonsburg, Pennsylvania 15317, Attention: Investor Relations. Investors and security holders may obtain free copies of the documents filed with the SEC by Ansoft by directing a written request to Ansoft Corporation, 225 West Station Square Drive, Suite 200, Pittsburgh, PA 15219, Attention: Investor Relations. INVESTORS AND SECURITY HOLDERS ARE URGED TO READ THE PROSPECTUS/PROXY STATEMENT AND THE OTHER RELEVANT MATERIALS WHEN THEY BECOME AVAILABLE BEFORE MAKING ANY VOTING OR INVESTMENT DECISION WITH RESPECT TO THE PROPOSED TRANSACTIONS.

This communication shall not constitute an offer to sell or the solicitation of an offer to sell or the solicitation of an offer to buy any securities, nor shall there be any sale of securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of such jurisdiction. No offering of securities shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act of 1933, as amended.

Participants in the Solicitation

ANSYS, Ansoft and their respective executive officers, directors and trustees may be deemed to be participants in the solicitation of proxies from the security holders of Ansoft in connection with the merger. Information about the executive officers and directors of ANSYS and their ownership of ANSYS common stock is set forth in the proxy statement for ANSYS' 2007 Annual Meeting of Stockholders, which was filed with the SEC on April 9, 2007. Information about the executive officers and directors of Ansoft and their ownership of Ansoft common stock is set forth in the proxy statement for Ansoft's 2007 Annual Meeting of Stockholders, which was filed with the SEC on July 26, 2007. Investors and security holders may obtain additional information regarding the direct and indirect interests of ANSYS, Ansoft and their respective executive officers, directors and trustees in the merger by reading the prospectus/proxy statement referred to above.

Forward Looking Information

Certain statements contained in the press release regarding matters that are not historical facts, including statements regarding the parties' ability to consummate the proposed transaction and timing thereof, expectations that the proposed acquisition, if completed, should be modestly accretive to non-GAAP earnings per share, and statements regarding the impact of the pending acquisition, the projected growth in the CAE industry, the combined company's ability to deliver customer-driven engineering simulation solutions and the ability of the combined company to lead the evolution and innovation of engineering simulation, are "forward-looking" statements (as defined in the Private Securities Litigation Reform Act of 1995). Because such statements are subject to risks and uncertainties, actual results may differ materially from those expressed or implied by such forward-looking statements. All forward-looking statements in this press release are subject to risks and uncertainties. These include the risk that the acquisition of Ansoft may not be consummated, the risk that the business of ANSYS and Ansoft may not be combined successfully or such combination may take longer or cost more to accomplish than expected, the risk that the pricing of the senior credit facility will be less favorable than ANSYS anticipates, and the risk that operating costs, customer loss and business disruption following the acquisition of Ansoft may be greater than expected. Additional risks include the risk of a general economic downturn in one or more of the combined company's primary geographic regions, the risk that the assumptions underlying ANSYS' anticipated revenues and expenditures will change or prove inaccurate, the risk that ANSYS has overestimated its ability to maintain growth and profitability and control costs, uncertainties regarding the demand for the combined company's products and services in future periods, the risk that ANSYS has overestimated the strength of the demand among its customers for its products, risks of problems arising from customer contract cancellations, uncertainties regarding customer acceptance of new products, the risk that the combined company's operating results will be adversely affected by possible delays in developing, completing, or shipping new or enhanced products, risks that enhancements to the combined company's products may not produce anticipated sales, uncertainties regarding fluctuations in quarterly results, including uncertainties regarding the timing of orders from significant customers, and other factors that are detailed from time to time in reports filed by ANSYS, Inc. and Ansoft Corporation with the Securities and Exchange Commission, including the Annual Reports on Form 10-K, the quarterly reports on Form 10-Q, current reports on Form 8-K and other documents ANSYS and Ansoft have filed. ANSYS and Ansoft undertake no obligation to publicly update or revise any forward-looking statements, whether changes occur as a result of new information or future events after the date they were made.

SOURCE: ANSYS, Inc. and Ansoft Corporation

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 楼主| 发表于 2008-4-10 14:26:00 | 显示全部楼层

Ansoft release AnsoftLinks 4.1

What's new in AnsoftLinks 4.1:

 1) HFSS v11 and Q3D Extractor v8 export is available.
 2) Cadence Allegro/APD v16 and v16.1 support
 3) Ability to read in materials from Cadence Allegro/APD
 4) Support for Cadence SiP Digital/RF (v16.0 and v16.1)
 5) User option to choose whether to subtract metal from dielectrics
  - this will speed up solid model generation time by decreasing the number of boolean operations
  - a material override option is available in HFSS v11 and Q3D Extractor v8.
 6) Ability to remove plating tails during solid model export
 7) Minimum conductor edge length setting
 8) Minimum dielectric edge length setting
 9) Export to SIwave and Export to TPA is now available
 10) Numerous bug fixes and third party translation issues have been addressed

In addition, a number of user interface bug fixes are included.

------------------------------------------------------------------------
6) SUPPORTED LAYOUT TOOL VERSIONS

AnsoftLinks 4.1 has been tested with the following versions of the
supported third-party layout products:

 RODUCT   VERSION

      Cadence Allegro         15.0, 15.1, 15.2, 15.5.x, 15.7, 16.0 and 16.1
      Cadence APD             15.0, 15.1, 15.2, 15.5.x, 15.7, 16.0 and 16.1
      Cadence SiP Digital/RF  15.7, 16.0 and 16.1
      Mentor BoardStation     8.x
      Mentor Expedition       v2004, v2005
      Mentor PADS             PowerPCB v5.2a, v2005
      Synopsys Encore ICPD    2001.x, 2002.x, 2003.x, 2004.x and 2005.x
      Sigrity UPD             6.x
      Zuken CR5000            9.x and lower

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发表于 2008-4-10 23:23:00 | 显示全部楼层

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 楼主| 发表于 2008-4-22 21:42:00 | 显示全部楼层
最近真是忙啊.................

Ansoft如期发布HFSS 11.1,没有受到Ansys收购的影响。

Version 11.1 Major Enhancements and Bug Fixes

=============================================

Meshing and Geometry Translation:

- The mesher will attempt to create an accurate mesh for all geometries, including those

  which were previously flagged for ACIS-entity errors during design validation. 

  After initial mesh is complete, the profile will indicate when repairs have been made to

  a model, and the quantity of repairs will be displayed per object under the mesh

  statistics tab of the solution data panel.



- Under Modeler->Validation Settings, users can now set the level to which HFSS checks a

  model for faults during 3D model validation.   

 

- There is an additional option within the Model Resolution mesh operation setup labeled

  "Auto Simplify Using Effective Thickness".  With this option selected the mesher will

  automatically choose a model resolution value for each object based on its effective

  thickness.



- Nastran (.nas) geometry import is now available.



- Parasolid and Unigraphics (Unigraphics import available only on Windows) geometry files

  can now be imported into HFSS.  





Post-Processing:

- Near-field and far-field computation algorithm has been reworked to improve calculation

  time.



- Fields are now loaded only from the model area that is relevant to the post-processing

  quantity being calculated, therefore reducing the time needed to generate a field plot. 



- There is a new option in fast sweep setup labeled "Generate Fields (All Frequencies)". 

  This setting enables HFSS to compute fields for all frequencies during a fast sweep analysis,

  subsequently storing them to disk.  With this option selected, fields will not need to be

  recalculated when HFSS is post-processing the data.

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发表于 2008-4-24 23:15:00 | 显示全部楼层

对LZ的崇拜犹如滔滔江水。原来LZ在这里扎根。

Ansoft被Ansys收购了啊,不知道是好事还是坏事。有限元一统了,FDTD似乎还有不少山头,不过CST还是比较牛。

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 楼主| 发表于 2008-5-2 20:24:00 | 显示全部楼层

Agilent即将推出ADS2008的第一个升级版Update1,与SI相关的更新主要有:

# Impulse Response Writer
# Improved Convolution From S-Parameters

这两个新特性的加入,使得ADS对高速串行通道的仿真支持得更加完善:

Impulse Response Writer基于互连物理通道的S参数,进行傅立叶反变换,得到时域的冲激响应波形,并把这个波形文件保存下来,然后对于不同驱动器的仿真,直接用这个波形与驱动器波形时域卷积就得到接收侧的响应波形,基于这种处理,能大大加快高速串行通道的仿真,因为你不需要对通道的响应进行重复计算。

Improved Convolution From S-Parameters是为了使Impulse Response Writer工作得更好的一种改进的卷积算法,S参数是频域参数,需要变换到时域进行仿真,经常会面临无源性、因果性的问题,这个算法就是为了解决这两个问题的。

-------------------------------------------------------------
Agilent ADS 2008 Update 1

ADS 2008 Update 1 brings you the following exciting enhancements:

    * 10x speedup in planar 3D electromagnetic simulation
    * 10x speedup in non-linear circuit simulation
    * Patent pending convolution technology that allows accurate signal integrity simulation with measured S-parameter data of high-speed interconnects
    * New Simulation Models and Libraries
    * Further improvement in graphical user interface

10x speedup in planar 3D electromagnetic simulation

The 3D planar EM simulator, Momentum, in ADS 2008 update 1 now has at least 10x speed improvement and 6x capacity improvement. This enables you to use electromagnetic simulation as an interactive design tool instead of a sign-off verification tool before hardware prototyping. The high speed of Momentum simulation now allows multiple design explorations to be accomplished easily.

An example of a wireless LAN transceiver simulation where the chip area is minimized by 32% by packing the 11 spiral inductors closer together. This translates to a corresponding 32% reduction in the cost of the 802.11/b transceiver RFIC.

The simulation took just 2.3 minutes with 650MB of RAM as compared to 38 minutes with 1.2GB of RAM in earlier versions of Momentum. This 15x speed improvement allows for interactive placement of the inductors with their proximity effects analyzed very quickly achieving the overall 32% die size reduction.


10x speedup in non-linear circuit simulation

The already powerful harmonic balance simulator in ADS just received additional algorithmic enhancements from Agilent EEsof’s recent acquisition of Xpedion GoldenGate, who has the world’s fastest and highest capacity harmonic balance simulator. Now the harmonic balance simulator in ADS 2008 update 1 can handle bigger circuits and solve them 10x faster. For example, a large RFIC with over 2000 nonlinear elements and over 2000 large signal sources is solved within 250 seconds as compared to 2,485 seconds in the previous versions. The speed and capacity improvements are especially important for fast optimization of large RF-System-In-Package (SIP), MMIC and RFIC to meet higher levels of integration and performance demanded by consumer wireless electronics today.


Patent pending convolution technology


High-speed multi-gigabit digital serial link designers can now accurately measure the S-parameters of interconnects with vector network analyzers and use it directly in signal integrity simulation of eye diagrams and bit error rate.


The patent pending convolution technology in ADS 2008 update 1 guarantees the correct generation of impulse response from measured S-parameters that obeys passivity and causality characteristics of a physical model. This applies even if the measured data is noisy.

The proof is in the following comparison of a pulse train sent through an interconnect modeled as a spice netlist and measured S-parameter. Now, we see an exact match.

New Simulation Models and Libraries

The following new models and libraries are now in ADS2008 update 1:

    * PSP and HiSIM transistor models for accurate nano-scale (30nm, 45nm) RFIC simulation
    * Triquint TOM4 latest III-IV FET model optimized for PHEMT technologies to accurately model highly non-linear behavior
    * Models for gigabit serial link signal integrity analysis:
          o HSPICE W-elements
          o IBIS switches
          o Verilog AMS
          o De-embedding element for easy removal of test fixture effects
          o Impulse response model writer
    * New Ultra Mobile Broadbanc (UMB) wireless library
    * New updated LTE wireless library
    * New updated HSDPA wireless library

Further improvement in graphical user interface

The graphical user interface is further enhanced:

    * 3D viewer with translucency

    * Enhanced Data Display with intelligent symbol spacing on dense traces to make multiple traces and printed B/W traces easier to identify.

    * Enhanced Data Display with Tabs for improved data viewing management

    * Enhanced Data Display with CSV data export to spreadsheet

    * Enhanced Layout properties editing on multiple selected objects with Redo function


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