Final answer:
WiFi standards that use dual antennas are part of the MIMO technology, which is included in 802.11n (WiFi 4), 802.11ac (WiFi 5), and 802.11ax (WiFi 6), leveraging multiple antennas for higher data throughput and improved reliability.
Step-by-step explanation:
WiFi standards that use dual antennas typically refer to Multiple Input Multiple Output (MIMO) technology, which is a part of modern wireless communication standards such as 802.11n (WiFi 4), 802.11ac (WiFi 5), and 802.11ax (WiFi 6).
These standards support higher data rates and improved network efficiency by transmitting multiple data streams at the same time over the same channel. The use of dual antennas enables this by allowing simultaneous reception and transmission of data, thus increasing the throughput and reliability of the wireless connection.
To explain using the provided information, a wireless WiFi router utilizing MIMO technology can transmit data at high rates, like the 75 Mbps mentioned. Furthermore, the physics principles behind WiFi technologies involve microwave frequencies—specifically in the 2.4 GHz to 5.0 GHz range, which corresponds to certain wavelengths that antennas are designed to most efficiently receive and transmit, as seen with the different lengths of cross wires in television reception antennas.
This principle also aligns with the way an ideal broadcast antenna size is determined, by being a quarter of the wavelength of the electromagnetic radiation being sent out.