• FROM RF TO BITS WITH SYNTHETIC BEAMFORMING

      Kelkar, Anand; Lamarra, Norm; Gonzalez, Daniel; Creative Digital Systems; Malibu Research Associates (International Foundation for Telemetering, 2006-10)
      A Synthetic Beamforming antenna was built for Airborne Telemetry. Low-Noise Block-converters translated RF to IF suitable for direct analog-to-digital conversion. Then all telemetry functions were performed digitally via parallel FPGAs for 10 independent sources. Monopulse tracking and optimal diversity combination was performed using 4 antenna quadrants at two orthogonal polarizations. Novel estimation approaches drove digital demodulation, symbol- and bit- synchronization. Final telemetry outputs include: digital, analog (video), and analog IF (e.g., for downlink relay). This program has incubated several concepts that we believe have the combined potential to significantly improve the future of telemetry.