Cadence® system design and verification solutions, integrated under our System Development Suite, provide the simulation, acceleration, emulation, and management capabilities.
System Development Suite Related Products A-Z
Cadence® digital design and signoff solutions provide a fast path to design closure and better predictability, helping you meet your power, performance, and area (PPA) targets.
Full-Flow Digital Solution Related Products A-Z
Cadence® custom, analog, and RF design solutions can help you save time by automating many routine tasks, from block-level and mixed-signal simulation to routing and library characterization.
Overview Related Products A-Z
Driving efficiency and accuracy in advanced packaging, system planning, and multi-fabric interoperability, Cadence® package implementation products deliver the automation and accuracy.
Cadence® PCB design solutions enable shorter, more predictable design cycles with greater integration of component design and system-level simulation for a constraint-driven flow.
An open IP platform for you to customize your app-driven SoC design.
Comprehensive solutions and methodologies.
Helping you meet your broader business goals.
A global customer support infrastructure with around-the-clock help.
24/7 Support - Cadence Online Support
Locate the latest software updates, service request, technical documentation, solutions and more in your personalized environment.
Cadence offers various software services for download. This page describes our offerings, including the Allegro FREE Physical Viewer.
The Cadence Academic Network helps build strong relationships between academia and industry, and promotes the proliferation of leading-edge technologies and methodologies at universities renowned for their engineering and design excellence.
Participate in CDNLive
A huge knowledge exchange platform for academia to network with industry. We are looking for academic speakers to talk about their research to the industry attendees at the Academic Track at CDNLive EMEA and Silicon Valley.
Come & Meet Us @ Events
A huge knowledge exchange platform for academia. We are looking for academic speakers to talk about their research to industry attendees.
Americas University Software Program
Join the 250+ qualified Americas member universities who have already incorporated Cadence EDA software into their classrooms and academic research projects.
EMEA University Software Program
In EMEA, Cadence works with EUROPRACTICE to ensure cost-effective availability of our extensive electronic design automation (EDA) tools for non-commercial activities.
Apply Now For Jobs
If you are a recent college graduate or a student looking for internship. Visit our exclusive job search page for interns and recent college graduate jobs.
Cadence is a Great Place to do great work
Learn more about our internship program and visit our careers page to do meaningful work and make a great impact.
Get the most out of your investment in Cadence technologies through a wide range of training offerings.
Overview All Courses Asia Pacific EMEANorth America
Instructor-led training [ILT] are live classes that are offered in our state-of-the-art classrooms at our worldwide training centers, at your site, or as a Virtual classroom.
Online Training is delivered over the web to let you proceed at your own pace, anytime and anywhere.
Exchange ideas, news, technical information, and best practices.
The community is open to everyone, and to provide the most value, we require participants to follow our Community Guidelines that facilitate a quality exchange of ideas and information.
It's not all about the technlogy. Here we exchange ideas on the Cadence Academic Network and other subjects of general interest.
Cadence is a leading provider of system design tools, software, IP, and services.
Get email delivery of the Cadence blog featured here
The current Allegro PCB Power Integrity (PI) tool is fast, but not accurate enough in the high frequency band due to the effect of discontinuities. This feature uses a discontinuity model in the PI analysis. With discontinuity model integration, PI analysis is more accurate and allows you to control the target impedance more efficiently.
A plane pair can be simulated by an equivalent circuit of a grid of transmission lines. The low-frequency equivalent components of the planes can be derived from a quasistatic model. The S-parameters for discontinuities are extracted by MoM and integrated into an equivalent circuit of the plane pair. Read on for more information …
Transmission Line Model of a Plane Pair
After the plane pair is divided into rectangular meshes, each mesh is modeled by four transmission lines. The following figure shows the star-type equivalent transmission line circuit for one mesh cell in the SPB16.2 release.
In the SPB 16.3 release of PCB PI, a ring-type equivalent transmission line circuit has been adopted to integrate the discontinuity model. The following figure gives the equivalent circuit for the internal mesh cell. The node positions have been changed and the center node in the previous release has been removed.
To connect with the discontinuity model represented by an S-parameter subcircuit, the equivalent circuit for the mesh cell at the plane/void edge is a little different with the internal mesh cell, as shown below.
The multiple transmission lines between the same two nodes are merged to improve the performance, as shown below.
Two types of PDN discontinuities are modeled: Split Plane Overlay
Plane Edge Overlay
Mesh on PCB SI Canvas
Since the new mesh algorithm has changed, the node locations are now at the intersection of the mesh lines. In previous releases, they were located inside each mesh cell.
Please share your experiences using this capability.
Jerry "GenPart" Grzenia