A 4-Channel 28 GHz Power Amplifier with 4-Bit Digital Phase Control for 5G RF Front Ends

5G communications promises to offer the user the perception of near infinite capacity. This requires a step change in data rates that will be facilitated by a move to higher transmission frequencies where wider bandwidths are more readily available. New innovative components will be required to meet this demand, such as the 4-channel 28GHz phase adjustable Power Amplifier (PA) described below. Each channel has an output power capability of 30 dBm (at 1dB compression) with an IP3 of +38dBm and incorporates independent, 4-bit phase adjustment with an rms phase error of 2.3°.

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