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House of Lords raises space concerns

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The House of Lords EU Internal Market Sub-Committee has written to Sam Gyimah MP, Minister of State for Universities, Science, Research and Innovation, to raise concerns about the progress of, and the Government’s commitment to UK space programmes after Brexit. The letter calls on the Government to act quickly to achieve an agreement that preserves UK access to EU space programmes. ...

US to regulate space

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The US government is taking the first steps to regulating space to prevent collisions between satellites and other space mishaps. “President Trump knows that a stable and orderly space environment is critical to the strength of our economy and the resilience of our national security systems,” US vice prseident Mike Pence told a conference last week, “and that’s why the ...

SpaceX gets go-ahead to launch 4,425 satellites

SpaceX has got FCC approval to launch 4,425 low-orbit satellites to provide low-cost internet connectivity. Because they fly low, the satellites will deliver faster connections than geo-stationary satellites. The FCC said SpaceX has been given permission to use frequencies in the Ka (20/30 GHz) and Ku (11/14 GHz) bands. “This is an important step toward SpaceX building a next-generation satellite ...

500W 12 to 24V converter for tough environments

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Gresham Power Electronics has introduced a 500W dc-dc converter for military and non-tactical vehicle mounted communications and security systems. Called GPD500 is now available from the Salisbury-based power supply maker, which accepts inputs between 10 to 20Vdc and delivers regulated 24Vdc output, designed to meet the requirements of MIL-STD 1275D. “Sophisticated electronics developed for military vehicles, is designed to be ...

Plastic ICs power small satellite constellations

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The mini-boom in small satellites means manufacturers are looking for inexpensive radiation-hardened components, writes Josh Broline. There has been a great deal of activity in the spaceflight industry recently. The missions to Mars, Jupiter and asteroids, along with innovations in satellite and launch vehicle technology, have made the space industry front-page news again. Small satellites in low earth orbit (LEO) ...

50W GaN-on-SiC transistor for 5-6GHz

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Integra Technologies had announced a matched, GaN-on-SiC transistor, offering 50W at 5-6GHz. Designed for pulsed C-Band Radar applications, the IGT5259L50 HEMT is matched to 50Ω and supplies 50W peak pulsed power at 50V drain bias. Actual range is 5.2-5.9GHz with instantaneous response, and 14dB of gain is available at 43% efficiency (1ms/15% pulse). It comes in a 20x11mm RoHS-compatible metal-ceramic ...

Powering up wearable devices for the military

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Military personnel have come to rely in reliable wearable devices and for reliability, the design of the battery pack is critical. Jonathan DiGiacomandrea explains how technological advances are influencing the design of batteries in military devices. The global demand for connected devices is growing, with trends such as the internet of things (IoT) and home automation setting certain expectations from users. ...