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Advanced electro-thermal simulation sees deeper inside chips

Advanced electro-thermal simulation sees deeper inside chips
by Don Dingee on 03-29-2023 at 6:00 am

Advanced electro-thermal simulation in Keysight PathWave ADS

Heat and semiconductor reliability exist in an inversely proportional relationship. Before the breaking point at the thermal junction temperature rating, every 10°C rise in steady-state temperature cuts predicted MOSFET life in half. Yet, heat densities rise as devices plunge into harsher environments like smartphones,… Read More


Keysight Expands EDA Software Portfolio with Cliosoft Acquisition

Keysight Expands EDA Software Portfolio with Cliosoft Acquisition
by Daniel Nenni on 02-23-2023 at 8:00 am

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During the day I do M&A work inside the semiconductor ecosystem and I have been part of more than a dozen acquisitions during my career so I know a good one when I see it and I see a great one with Keysight and Cliosoft, absolutely.

Cliosoft came to SemiWiki 12 years ago when we first went online so I know them quite well. With more than… Read More


Big plans for state-of-the-art RF and microwave EDA

Big plans for state-of-the-art RF and microwave EDA
by Don Dingee on 02-13-2023 at 6:00 am

RF front-end components are driving demand for state-of-the-art RF and microwave EDA

RF and microwave design is no longer confined to a few defense and aerospace EEs huddled in dark cubicles working with spreadsheets and primitive circuit simulators. Now, areas like 5G and automotive demand complex RF systems. Advanced RF and microwave EDA tools are taking on electromagnetic (EM), thermal, and power simulation,… Read More


Higher-order QAM and smarter workflows in VSA 2023

Higher-order QAM and smarter workflows in VSA 2023
by Don Dingee on 10-25-2022 at 10:00 am

Higher-order QAM and smarter workflows in a 5G NR example from the Keysight 89600 VSA

3GPP Release 17 and 802.11be (Wi-Fi 7) extend modulation complexity, raising the bar for conformance testing and test instrumentation to new levels. The latest release of Keysight PathWave 89600 Vector Signal Analysis 2023 (VSA 2023) software takes on higher-order QAM and smarter workflows, many customer-requested, for … Read More


Advanced EM simulations target conducted EMI and transients

Advanced EM simulations target conducted EMI and transients
by Don Dingee on 09-19-2022 at 6:00 am

Advanced EM simulations yield both conducted and radiated EMI in automotive power integrity analysis

A vital benefit of advanced EM simulations is their ability to take on complicated physical test setups, substituting far easier virtual tests yielding accurate results earlier during design activities. The latest release of Keysight PathWave ADS 2023 continues speeding up engineering workflows. Let’s look at three… Read More


Seeing 1/f noise more accurately

Seeing 1/f noise more accurately
by Don Dingee on 06-15-2022 at 10:00 am

Decimation chain speeds up measurements for 1/f noise

Electronics noise is often described as “white,” spread evenly across a band, typical on older semiconductor processes where thermal and shot noise dominate. As transistors shrink, “pink” 1/f noise takes over at low frequencies – becoming stronger in advanced processes and quantum computing technology. But it’s not an easy… Read More


Unlocking PA design with predictive DPD

Unlocking PA design with predictive DPD
by Don Dingee on 05-23-2022 at 10:00 am

Predictive DPD virtual test bench

Next up in this series on modulated signals is an example of multi-dimensional EM design challenges: RF power amplifiers (PAs). Digital pre-distortion (DPD) is a favorite technique for linearizing PA performance. Static effects are easy to model and correct, but PAs are notorious for interrelated dynamic effects spoiling … Read More


Shift left gets a modulated signal makeover

Shift left gets a modulated signal makeover
by Don Dingee on 03-31-2022 at 6:00 am

Modulated signals uncover combined effects in a shift left approach

Everyone saw Shift Left, the EDA blockbuster. Digital logic design, with perfect 1s and 0s simulated through perfect switches, shifted into a higher gear. But the dark arts – RF systems, power supplies, and high-speed digital – didn’t shift smoothly. What do these practitioners need in EDA to see more benefits from shift left? … Read More


WEBINARS: Board-Level EM Simulation Reduces Late Respin Drama

WEBINARS: Board-Level EM Simulation Reduces Late Respin Drama
by Don Dingee on 02-01-2022 at 6:00 am

Flat Z design and voltage ripple example in board-level EM simulation

Advanced board designs are fertile ground for misbehavior in time and frequency domains. Relying on intuition, then waiting until near-final product for power integrity (PI) or EMI testing almost guarantees board respins are coming. Lumped-parameter simulations of on-board power delivery networks (PDNs) struggle with … Read More