In this webinar, XFdtd's product team discusses group delay for UWB antennas.
In a laboratory setting, the group delay between two antennas is measured directly using a VNA. Typically, two identical antennas are separated by a minimum of the far-field distance and aligned such that the transmitter (TX) and receiver (RX) have both the same polarizations and look directions. The resulting group delay is a function of the TX antenna, the RX antenna, and the separation distance. In order to determine the group delay associated with a single antenna—either TX or RX—some analysis of the measured group delay must be performed.
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