Radio frequency (RF) refers to the rate of oscillation of electromagnetic radio waves in the range of 3 kHz to 300 GHz, as well as the alternating currents carrying the radio signals. This is the frequency band that is used for communications transmission and broadcasting. Although RF really s...
The role of each component of the radio frequency front-end is not complicated. For example, the amplifier is to amplify the signal to make the signal farther; the filter is to remove the clutter and make the signal more "pure"; the antenna switch is used to control the enabling and clo...
Radio frequency is an alternating electrical current with certain properties that allow it to be broadcast from an antenna. Many...
Very high frequency (VHF) refers to the radio frequency electromagnetic waves ranging from 30 to 300 MHz with corresponding wavelengths ranging from 1 m to tens of meters. VHF is widely used for FM broadcasting, television broadcasting, military and local mobile radio transmissions, traffic control...
Highest-Order Modulation Number of Bits in a Symbol 802.11a/g 64-QAM 6 802.11n 64-QAM 6 802.11ac 256-QAM 8 802.11ax 1024-QAM 10 Coding rate Theoretically, lossless transmission is supported based on the encoding scheme. During actual transmission, some information codes ...
What is the highest frequency (shortest wavelength) that could be emitted from a TV tube which has an accelerating voltage of 2,000 volts? What is the nature of this radiation? An x-ray is taken using x-rays that...
The test measures the maximum throughput performance of the DUT with a single station active. The AP should be configured for 160MHz on 5 GHz and 40 MHz on 2.4GHz bands. This Wi-Fi testing plan confirms the highest transmission performance in the 802.11ax mode. ...
A radio wave has a frequency of {eq}7.9 \times 10^{10} {/eq} Hz. What is the energy (in J) of one photon of this radiation? Photon and its Energy Photons are descrete units or packets of energy of an electromagnetic wave. Each photon is a...
A SIMPLE explanation of a Notch Filter (Band Stop filter). Learn what a Notch Filter is, what a notch filter does, its circuit diagram & design, and the types of Band-Stop filters. We also discuss ...
High-Frequency RFID Cards (13.56 MHz) Ultra-High RFID Cards (860-960 MHz) The high the frequency of operation, the wider the read distance. The ultra-high cards have the highest read distance of up to 50 feet, while the low-frequency ones have a short read distance of 10 cm. ...