Direction Finding of Ultra-Wideband Signals Using Direct RF Sampling

We present a direction finding (DF) system using a Direct RF sampling technique. This technique promotes a low cost and versatile approach with minimum complexity. Specifically, a high-speed Digital-to-Analog Converter (DAC) as a transmitter and a high speed Analog-to-Digital Converter (ADC) as a receiver are used. The transmitted signal was a random Binary Phase Shift Keying (BPSK) Signal, coded with a Gold code of length 127. The total bandwidth is approximately 1.3 GHz.