NORSAT INTERNATIONAL INC.
|NORSAT INTERNATIONAL INC. Patent applications|
|Patent application number||Title||Published|
|20100123636||COMPACT ANTENNA FEED ASSEMBLY AND SUPPORT ARM WITH INTEGRATED WAVEGUIDE - A streamlined feed assembly and feed support arm for parabolic antennas with circular or linear polarization is disclosed and claimed. The feed assembly contains a septum polarizer with parallel transmit and receive ports, or a similarly configured ortho-mode transducer. Through a common waveguide transition, the ports connect to transmit and receive filters joined together in parallel to form a square-profile structure that serves as the feed support arm. The receive filter terminates in a low noise block downconverter while the transmit filter connects to a waveguide flange at the base of the reflector, which is the output port of an up-converter/power amplifier mounted behind the reflector. Alternatively, the power amplifier is integrated into the feed support arm, connecting to the rest of the transmitter behind the reflector.||05-20-2010|
|20100045510||AUTOMATIC SATELLITE ACQUISITION SYSTEM FOR A PORTABLE SATELLITE TERMINAL - A system for accurate automatic satellite acquisition by a portable satellite terminal. The system includes a software program that coordinates inputs from several measurement aids to control antenna position. These aids include a GPS receiver, antenna azimuth, elevation and polarization angle sensors, and the terminal's modem, DVB receiver and spectrum analyzer, which contains a beacon detector also serving as Receive Signal Strength Indicator (RSSI). For satellite recognition, the spectral analysis and RSSI function are complemented by the lock/unlock indications provided by the modem and the DVB receiver. Under the control of the software program, the modem, DVB receiver and spectrum analyzer, in conjunction with an extensive database of satellites and their signal characteristics, provide the means for reliable validation of final alignment.||02-25-2010|
Patent applications by NORSAT INTERNATIONAL INC.