Partial Inductance – The Secret to Correlating Simulation and Measurement

There’s confusion about the measurement of capacitors, and particularly the series inductance or ESL. Different manufacturers calibrate or de-embed their measurement differently, making it difficult to compare one vendor to another. The differences between these measurements represent different locations of the measurement reference plane. When correlating EM simulation and measurement results, where should the reference […]

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Anatomy, Modeling and Simulation of High Performance Vias: Why It Hasn’t Mattered Until Now

Drilled vias are an essential component of high-performance design. However, opinions vary on best practices for designing via transitions. The ultimate design goal of maximum performance and minimum crosstalk while maintaining measurement accuracy can be elusive. In this course, Scott McMorrow will dissect via design, compare via optimization techniques and outline PCB material models necessary […]

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This Is Why You Need To Worry About Terminations

The first rule of engineering transmission lines is to build a controlled impedance interconnect. The second rule is to implement a termination strategy for the interconnects based on the routing topology and the drivers and receivers. In our Advanced PCB Design class, we use a simple demonstration test board to illustrate the perils of bad […]

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The Influence of Connectivity on Low Impedance Measurements

Engineers connect a VNA to a circuit board for low-impedance measurements using a variety of methods. These methods primarily include connectors, probes, and soldered pigtails. Each of these methods has advantages and disadvantages, and no one solution is best in all cases. In this session both qualitative and quantitative assessments are presented for each method, […]

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Power Integrity: Layer Stackup and Decoupling to Achieve a Target Impedance

There are many choices in PCB power integrity design to achieve a specified voltage ripple, or target impedance. For the power net, this includes on which layer(s) to locate it, spacing between the power net and closest ground, and special materials for embedded capacitance. For decoupling, design choices include capacitor location, value(s), interconnect geometry, and […]

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Comparison of Radar and Lidar Sensors for Autonomous Vehicles – Performance and Market Trends

Radar and LiDAR sensors are the key sensors for the future autonomous vehicles enabling the detection of vehicles, people and other moving or fixed objects around the vehicle. Recent advances in these fields have significantly improved their performance and features. This talk will discuss the technologies used and applications of these sensors for self-driving-vehicles (SDV). […]

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Bigger Than You Are: The Emerging Role of Fractal Superscatterers

Metamaterials present emerging roles in contemporary RF applications. This talk describes one important application, specifically fractal metamaterials, as enhanced reflectors. Gain enhancement at selected and controllable frequencies can be substantial, meriting the moniker ‘superscatterers’.  Looked at as radar targets, superscatterers can present a radar cross section(RCS) far greater than that expected from the surface geometry […]

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Today’s Satellite Broadband Landscape: LEOs, MEOs, GEOs and Megaconstellations

In a connected society, it is challenging to fathom that the year 2019 marked the first year in which more than half the world had access to the Internet. For decades, but in particular the past ten years, tremendous efforts from governments and the private sector have been made to bring more individuals online, and […]

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Scanning Radar Horizons: Near & Far

Once a relatively staid technology discipline where innovation timelines were measured in years, radar has seen an unprecedented rate of growth and proliferation fueled by many disparate markets including the military/civil, UAVs, automotive, autonomous vehicles both ground-based and airborne, commercial products and medical—to name a few. Military radars are continuing to evolve ever more sophisticated […]

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Drone Based Mobile Quantum Links

Quantum links have been demonstrated using satellite and fiber. Here, we propose a new type of quantum link using drones, for mobile connections with high flexibility. We demonstrate the first drone-based entanglement distribution, to work in multi-weather conditions including daytime and rainy nights. Moreover, we show that the drones node can be interconnected in air, […]

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