Spectrum sharing prevents cellular communications from interfering with existing military communications.
Measure in-band and adjacent channel power
Spectrum analyzers let you see how distortion can affect transmitted RF signals.
Measure power in complex RF signals
How Doherty Amplifiers improve PA efficiency
An amplifier design from 1936 gets a revival by reducing power consumption in cellular radios.
Envelope tracking improves power amplifier efficiency
RF power amplifiers consume lots of energy, which is a concern associated with 5G. Envelope tracking helps reduce power consumption but has tradeoffs.
How to calculate RF power amplifier efficiency
5G brings higher data rates and a need for more efficient power amplifiers. Understand and calculate a PA’s efficiency. Radio communication systems steadily improve data rates and overall system performance. With that higher performance comes increasing pressure on power consumption. A recent industry report [Ref 1] concluded that power consumed by a typical 5G base…
Antenna elements combine in phased-array antennas
Learn how to use patch antennas and phase shifting to create a phased-array antenna to steer RF signals.
More antennas, faster data transfer
MIMO and beamforming provide increased data rates than you can get using single, omnidirectional signals. Antennas convert between radio waves propagating through space and electric currents moving in a metal conductor. In early communication system, antennas were often quite simple, perhaps just a half-wave dipole constructed of wire. We usually just had one antenna per…
OFDMA improves spectrum use in Wi-Fi 6
Orthogonal Frequency Division Multiple Access increases the efficiency of a crowded Wi-Fi channel. The access point is in control, managing who gets bandwidth and when.
The basics of 5G’s modulation, OFDM
Orthogonal frequency-division multiplexing has become the standard modulation format for 5G New Radio. Lean how OFDM works and how it’s used.