Tag: Radio Frequency
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How Do Engineers Choose Satellite Cables? Power, Signal, RF and High-Voltage Lines Have Different Requirements
A satellite unit may work perfectly on a test bench, then develop problems after installation on the spacecraft: low supply voltage, fluctuating temperature readings, intermittent bus errors or higher-than-expected radio-frequency (RF) losses. The fault may lie in the cable connecting the unit. A cable is rarely a transparent path between two devices. It has resistance,…
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Ku, Ka and Q/V Bands in Satellite Internet: What Are They, and Why Are Different Bands Used?
A ship is at sea. A phone connects to the vessel’s satellite terminal, and a webpage image finally appears. The image first travels from the terrestrial internet to a gateway, passes through a satellite and then reaches the ship. Following this transmission path helps explain why Ku, Ka, Q and V bands perform different roles.…
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Mitsubishi Electric Orders SWISSto12 Phased-Array Antennas for Japanese Government GEO Program
SWISSto12 and Mitsubishi Electric Corporation signed a memorandum of understanding on September 14 covering advanced satellite payloads, radio-frequency products and market development in Japan and the wider Asia-Pacific region, while Mitsubishi Electric placed a separate order for phased-array antenna products supporting a Japanese government secure communications program in geostationary orbit. The companies did not disclose…
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Unseenlabs Orders Two More RF Surveillance Cubesats From GomSpace
French radio frequency (RF) detection specialist Unseenlabs has awarded GomSpace a €2.2 million (US$2.5 million) contract to build two additional cubesats, further expanding its space-based maritime surveillance constellation. The satellites will be manufactured using GomSpace’s 8U cubesat platform and are scheduled for delivery in 2027. Constellation Expansion Continues The latest order increases the total number…