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How to improve the efficiency of RF power amplifier?

Jan. 08, 2020

How to improve the efficiency of RF power amplifier? ——Envelope Tracking Technology and Doherty Technology

1. Tracking Technology

The essence of envelope tracking technology is that the input is separated into two types: phase andenvelope, and then amplified by different amplifier circuits. In this way, the two rf amplifiers can focus on their respective parts, and the combination of the two can achieve the goal of more efficient utilization.

2. Doherty Technology

The essence of Doherty's technology is that it uses two transistors of the same kind, and only oneworks at small inputs, at high efficiency. If the input is large, both transistors work at the same time.The basis of this method is that the two transistors should cooperate well. The working state of one transistor directly determines the efficiency of the other.

How to improve the efficiency of RF power amplifier?cid=11

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