KA-BAND TRANSMITTER FOR IP TRANSFER OVER SATELLITE
Sasa T Trajkovic · Summit (Simon Fraser University) · 2002
This project presents a single conversion, no spectral inversion, Ka-band transmitter.The transmitter is part of a satellite interactive terminal used in a new generation of interactive networks for lnternet protocol transfer over Ka-band satellites.The Ka-band transmitter is a part of the return channel link, for data transport from customer sites, over satellite, to the Hub that is connected to the lnternet backbone.Design considerations and simulation results for the transmitter upconverter section only are presented.Measurements performed on sub-circuit level show a very close match between the simulation data and actual measurement results.Unit level measurement is also completed, and results illustrate that the transmitter exceeds the required specification with a considerable margin.The return channel link budget calculation is carried out with a goal to determine whether or not the required probability of error performance is met with a data transfer rate of 348 Kbps.This calculation demonstrates that an availability of service of 99.7% can be achieved when this transmitter/outdoor unit is deployed in the ASTRA Broadband interactive network.