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Design And Analysis Of Receiver Systems In Satellite Communications And Uav Navigation Radar, Matthew Robertson Morin
Design And Analysis Of Receiver Systems In Satellite Communications And Uav Navigation Radar, Matthew Robertson Morin
Theses and Dissertations
The design of a low cost electronically steered array feed (ESAF) is implemented and tested. The ESAF demonstrated satellite tracking capabilities over four degrees. The system was compared to a commercial low-noise block downconverter (LNBF) and was able to receive the signal over a wider angle than the commercial system. Its signal-to-noise ratio (SNR) performance was poor, but a proof of concept for a low cost ESAF used for tracking is demonstrated. Two compact low profile dual circularly polarized (CP) reflector feed antenna designs are also analyzed. One of the designs is a passive antenna dipole array over an electromagnetic …
Passive And Electronically Steered Array Planar Feeds For Satellite Communications, Kyle C. Browning
Passive And Electronically Steered Array Planar Feeds For Satellite Communications, Kyle C. Browning
Theses and Dissertations
As the need for more bandwidth increases, satellite communication (SatCom) terminals are forced to climb higher in frequency. Higher frequency means greater propagation losses, and so antenna gain and sensitivity have to increase. The higher the gain, the more difficult it is to point the antenna. To make matters even more challenging, consumers are requesting satellite links in harsher environments and on moving vehicle and planes. In order to meet today's challenges and improve on dish feeds, research is ongoing to replace fixed-beam feedhorns with smaller, cheaper, and lighter PCB based antennas and to develop low-cost electronically steered array feeds …