Satellite Application Notes and White Papers

  1. NPR Measurements On Satellite Signals 1/29/2020

    This application note covers information on how to perform Noise-Power-Ratio (NPR) measurements with spectrum analyzers, and how the R&S FSW spectrum and signal analyzer offers an automated function for NPR measurements.

  2. Providing Narrowband IoT Coverage With LEO Satellites 1/21/2020

    Learn about the modeling of a SATCOM link, specifically citing a use case wherein a satellite overlay extends service continuity to IoT devices in a poorly covered rural area.

  3. Demystifying Over-The-Air Testing – Important Antenna Parameters, Test System Setup, And Calibration 6/27/2019

    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.

  4. Satellite Signal Interference And Carrier ID (CID) Solutions 1/19/2017

    The 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. 

  5. On-Orbit Satellite RF Measurements 7/7/2016

    To ensure proper performance in satellite transponders in the payload, on-orbit measurements must be made as part of maintenance. This app note focuses on satellite post-launch or on-orbit measurements, and monitoring strategies used for satellite functionality checks when running maintenance routines.

  6. LTE Location Based Services Technology Introduction 7/5/2016

    Global Navigation Satellite System (GNSS) based solutions are highly accurate in most cases, but there are circumstances where they are not as effective, such as in dense urban environments with reduced satellite visibility or indoor areas with low signal levels. LTE Location Based Services (LBS) are designed to determine where a device is located to assist in its effectiveness. This Rohde & Schwarz white paper describes limitations of GNSS systems, as well as LTE cellular based alternatives within 3GPP Release 9.

  7. Measuring And Monitoring Satellite Signals 2/27/2014

    This application note describes example measurement principles that cover the above-mentioned applications and for which the NRA range of spectrum analyzers from Narda is particularly suitable.

  8. A New Generation Of Gallium Nitride (GaN) Based Solid State Power Amplifiers For Satellite Communication 1/10/2014

    The introduction of Gallium Nitride High Electron Mobility Transistors (GaN HEMT) in early 2000 has left an undeniable mark on the entire satellite communication landscape. It is now possible for the first time since the introduction of the Solid State Microwave Technology to design and manufacture Power Amplifiers that exceed by several orders of magnitude the reliability, linearity, power density and energy efficiency of all existing technologies, being GaAs, LDMOS, or TWT. By C. Damian, VP Product Line Management and Business Development, and D. Gelerman, President and CEO, Advantech Wireless Inc.

  9. Using The Q/V Band For Satellite Feeder Links 12/13/2013

    A key limitation of current Ka-band systems is the simultaneous use of Ka-band for both revenue generating user links and backhaul feeder links. The 40 and 50 GHz bands provide opportunity to move commercial high throughput satellite feeder links out of Ka band.

  10. Using the IQC5000A and Spectro-X Software for Signal Capture and Analysis: A Satcom Example 12/10/2013

    This application note discusses how a spectrum capture and playback system can be used to predict and measure bandwidth, and its advantages over traditional signal analyzers for the same application.