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Design007-Apr2021

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APRIL 2021 I DESIGN007 MAGAZINE 51 tance and varies with the inverse square of the impedance we want to achieve. DESIGN007 References 1. "Be Aware of Default Values in Circuit Simulators," by Istvan Novak, Design007 Mag- azine. Istvan Novak is the principal signal and power integrity engineer at Samtec with over 30 years of experience in high- speed digital, RF, and analog circuit and system design. He is a Life Fellow of the IEEE, author of two books on power integrity, and an instructor of signal and power integrity courses. He also provides a website that focuses on SI and PI techniques. To read past columns or contact Novak, click here. mVpp ringing. While this may look like some improvement, we need to remember that the worst-case transient noise could be much higher. It happens when the current transients repetitively hit the 3.15 kHz resonance: aer the 10th period, the sinusoidal ringing has a 638 mVpp value, which is 4/PI times the 100 mOhm impedance peak multiplied by the 5App transient current. e 4/PI multiplier represents the magnitude of the fundamental spectral component in the Fourier transform of a square-wave. Summary Inductance is inevitable in electronic circuits. To minimize voltage fluctuations on the power rail, we need to balance inductance with suf- ficient capacitance. e balancing capacitance we need is linearly proportional to the induc- SolAero Technologies Corp. (SolAero), a leading provider of high efficiency solar cells, solar pan- els, and composite structural products for satel- lite and aerospace applications, congratulates the teams at OneWeb, Airbus OneWeb Satellites and Arianespace for the successful launch of 36 satel- lites of the OneWeb constellation. SolAero is proud to have supplied the solar panels for these satel- lites, launched from the Soyuz Launch Complex in Vostochny, Russia. This mission brings the total fleet to 146 satel- lites in LEO (Low Earth Orbit). In 2021, the company is focused on scaling the satellite constellation to launch commercial services starting at the end of 2021 to the UK, Alaska, Canada, Northern Europe, Greenland, Iceland, and the Arctic Seas. SolAero's high-efficiency solar cells, optimized to meet the performance demands of the One- Web mission, power the constellation. To support the programs' production requirements, SolAero established the world's first vertically integrated, high-volume solar panel manufacturing facility at its headquarters in Albuquerque, NM. Established in 2018, the facility has now produced more than 1,000 individual solar panels that are powering over 200 satellites for a dozen different missions. "This launch represents the culmination of over four years of close partnership with OneWeb and the Airbus OneWeb Satellites team and marks an important milestone in our collective efforts to provide worldwide broadband connectivity. The SolAero team is grateful to be a part of an endeavor that is transformational in so many ways and looks forward to the continued partnerships that have made this effort such a success," said Brad Clev- enger, CEO of SolAero Technologies. (Source: PRNewswire) SolAero Technologies Powers OneWeb's Satellite Constellation

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