Ultra Wideband (UWB) Antenna Testing

In this video, an ultra wideband (UWB) pulse transmitter is continuously transmitting UWB pulses to a receiver antenna (both transmitter and receiver use inverse bow-ties). The receiver antenna is connected an analog storage oscilloscope, a Tek 564B, which is setup to display 20 mV and 1 ns per division.

The UWB pulse transmitter is generating a single pulse using an avalanche transmitter with approximately 100 V across the collector and emitter. As you can see on screen, the receiver receives this initial pulse plus some extra waves afterwords. These extra waves are actually reflections of the pulse from the walls and objects inside the room.

Notice how changing the orientation of the receiver antenna changes the received wave shape. As the receiver antenna moves closer to the transmitter, the path delay gets less. Also, flipping the antenna changes the polarity of the initial received pulse. The reflections, however, do not necessarily change polarity.

Category:

Science & Technology

Tags:

• Ultra
• Wideband
• UWB
• Wide
• Band
• Pulse
• Antenna
• Tektronix
• 564B
• Tek

[skybars1980]

Super! Perfect!!!