The Time Modulated Array for Channel Sounding Measurements – Concept and Initial Field Tests

We present a technique to use a Time Modulated Array as the transmitter in a 5.8 GHz propagation channel sounder. The 5.8 GHz signal is first modulated with a pseudo random binary sequence, to allow a correlation in the receiver to detect multi-beam relative path delays and powers, so supporting angle of departure measurements for the transmitter. The system can resolve delays down to 250 ns and the receiver measurement floor is −120 dBm. We present the system concepts and initial field test results.