SATELLITE APPLICATION NOTES AND WHITE PAPERS
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![Capture]( "Implementation Margin Of A Satellite Communication System")
Implementation Margin Of A Satellite Communication SystemTo find the implementation margin of a satellite communication system, an EbNo generator can be used to carry out an IF loopback test of the modem to find bit error rate (BER) values at different Eb/No ratios. A plot of these values can be compared with the theoretical curve for the digital modulation scheme.
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NPR Measurements On Satellite Signals
Noise-Power-Ratio (NPR) measurements are used to characterize the performance of power amplifiers for satellites or other multi-channel communication systems. This application note covers information on how to perform NPR measurements with spectrum analyzers, and how the R&S®FSW spectrum and signal analyzer offers an automated function for NPR measurements.
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![Capture1]( "Providing Narrowband IoT Coverage With Low Earth Orbit Satellites")
Providing Narrowband IoT Coverage With Low Earth Orbit SatellitesThis article describes the modeling of a SATCOM link, specifically the use case of using a satellite overlay to extend service continuity to IoT devices in a poorly covered rural area.
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Demystifying Over-The-Air Testing – Important Antenna Parameters, Test System Setup, And Calibration
The step from conducted measurements to OTA testing changes the measurement requirements to a certain degree, so users must have a basic understanding of antennas and antenna measurements.
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![Satellite Signal Interference And Carrier ID (CID) Solutions]( "Satellite Signal Interference And Carrier ID (CID) Solutions")
Satellite Signal Interference And Carrier ID (CID) SolutionsThe main issue in the quality of service for satellite transmissions, especially in occasional use transmissions and temporary feeder links, is RF interference from sources like “rogue pirate carriers,” and failed or improperly configured equipment.
SATELLITE PRODUCTS
Qorvo offers the CMD240C4 wideband GaAs MMIC distributed amplifier housed in a leadless 4x4 mm surface mount package. The amplifier operates from DC to 22 GHz and is ideal for radar, space, satcom, test and measurement, and electronic warfare applications.
L3 Narda-MITEQ’s SBL series of fiber optic link components are designed to supply high performance, “plug & play” fiber optic link components for linear and some digital applications. The SBT-4000 fiber optic transmitter and the SBR-4000 fiber optic receiver can transport RF signals within the frequency range of 10 MHz to 4 GHz, over tens of kilometers of standard single mode optical fiber.
Avcom offers the new EVO-RSA-6070A as part of the EVO Series of rack mount analyzers. This extended frequency remote spectrum analyzer is designed to operate in the 70 MHz – 6 GHz frequency range. This SDR-style technology analyzer with a wide bandwidth receiver, employing FPGA, DSP, and high-performance processors. The analyzer is based on a hybrid swept-FFT technology which provides extended frequency range and higher resolution.
AtlanTecRF offers a new compact, lightweight and high efficiency drone payload satellite simulators with operation in either the Ka-band (30 GHz uplink and 20 GHz downlink) or Ku-band (14 GHz uplink and 11 GHz downlink) with options for both circular and linear polarization. This Drone Satellite Series (DSS) offers battery powered, cable-less RF test solutions for military and other Unmanned Airborne Vehicle (UAV) applications.
The JFW Model 50MS-367 is a 4 X 4 blocking matrix switch designed to operate in the DC-40 GHz frequency range, and is ideally suited for SATCOM and wireless 5G signal routing applications.
Horizon Technologies offers the new FlyingFish™ Airborne Satellite Monitoring System (ASMS) designed to enable international government bodies to passively monitor satellite communications from airborne monitoring platforms. This lightweight, cost-effective system can monitor Thuraya, and Isat-Pro networks, and can detect and intercept terminal and call activity such as voice, fax, data, and SMS within radio line-of-site.
The LSS series of Ka-band satellite simulators are designed to enable completely portable RF mobile satellite communications systems testing without the need for cabling. They are equipped with dual polarized horn antennas in both the uplink and downlink bands. For each frequency conversion, a separate attenuator provides adjustments of signal levels in order to accommodate receiver sensitivity and range distance.
The new quad-band satellite simulator from Tampa Microwave is designed as a compact, easy to use training and evaluation tool for satellite earth terminal applications. This device simulates C, X, and Ka-bands simultaneously at over 300 ft. of operation.
SATELLITE NEWS
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SENER To Exhibit Aerospace Technologies At Satellite 2018
The SENER engineering and technology group is participating for another year in the Satellite fair, an annual conference on commercial satellites and space technologies that represents the biggest event in the sector, with representatives from more than 100 countries. The 2018 edition will take place in Washington D.C., between 12 and 15 March.
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ViaLite Launches Hyper-Wide Dynamic Range RF Over Fiber Link
High Throughput Satellites (HTS) are capable of transmitting data over a hundred times faster than conventional Fixed Satellite Service (FSS) satellites and this higher throughput needs more dynamic range within the ground segment. Addressing this need, ViaLite has launched the new L-Band HTS – HWDR RF over fiber link.
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NASA’s Small Spacecraft Produces First 883-Gigahertz Global Ice-Cloud Map
A bread loaf-sized satellite has produced the world’s first map of the global distribution of atmospheric ice in the 883-Gigahertz band, an important frequency in the submillimeter wavelength for studying cloud ice and its effect on Earth’s climate.
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Zero Gravity Graphene Promises Success In Space
In a series of experiments conducted last month, Cambridge researchers experienced weightlessness testing graphene’s application in space.
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NASA Piggybacks Spectrograph On Comm Satellite To Study Ionosphere’s RF Disruption
The National Aeronautics and Space Administration (NASA) is set to launch its Global-scale Observations of the Limb and Disk (GOLD) mission to study Earth's near-space environment and better understand what disrupts radio signals and satellites used for communications and the Global Positioning System (GPS) for radio navigation.
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Reaper/Predator UAV Performs In-Flight, Multiple-Spot Beam Switching On Intelsat EpicNG Satellite
Unmanned aerial vehicles (UAVs) used by the United States Air Force have shown the capability to switch between multiple spot beams on the Intelsat EpicNG high-throughput satellite network.
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Hughes To Handle Ground Network System For OneWeb’s Global Internet Services
Hughes Network Systems, LLC (Hughes), the global leader in broadband satellite solutions and services, today announced that it has signed a contract for $190M with OneWeb for the production of a ground network system, supporting OneWeb's constellation of Low Earth Orbit (LEO) satellites in its mission to bring affordable broadband service to millions of households, schools and other end users around the world.
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Infostellar Launching 'Airbnb For Satellite Antennas'
Tokyo-based startup Infostellar plans to share idle antenna access among the global small satellite community, similar to how Airbnb lets people rent out unused living spaces to travelers.
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Inmarsat's European Short-Haul Wi-Fi Satellite Launches
Inmarsat, the world’s leading provider of global mobile satellite communications, has confirmed the successful launch of its S-band satellite (Inmarsat S EAN) for the European Aviation Network (EAN).
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Is Apple Trying To Break Into Satellite Internet?
Apple has reportedly hired two former executives of Google's defunct satellite internet unit, which suggests that Apple may be planning to get a similar project off the ground and up into orbit.
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Kymeta Raises $73.5 Million Ahead Of mTenna Satellite Antennas Commercial Trial
Kymeta Corporation, a metamaterials-based antenna technology startup based in Redmond, Wash., has raised $73.5 million in financing to develop and commercialize its software-steered antennas for the global mobile communications market.
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New NASA Radar Technique Finds Lost Lunar Spacecraft
Finding derelict spacecraft and space debris in Earth's orbit can be a technological challenge. Detecting these objects in orbit around Earth's moon is even more difficult.
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Intelsat, OneWeb Merge Into First "Truly Global Broadband Company"
Satellite services provider Intelsat SA is merging with OneWeb Ltd. in a share-for-share transaction to build the world’s first truly global broadband network, combining OneWeb’s constellation of low earth orbit (LEO) satellites with Intelsat’s fleet of geostationary orbit (GEO) satellites.