2012•Journal of MicrowavesRequires access

Design of Power Amplifier with Adjustable Amplitude Base on LDMOS Transistor

Li Yu

Abstract

LDMOS has remarkable advantages such as high-gain,high linearity,high reliability,low-cost,etc.In this paper LDMOS transistor is used to make a new power amplifier which works by adjusting amplitude in S band.By changing the gate voltage of the LDMOS transistor,the output power have 15dB dynamic range and adjustable accuracy is ±0.2dB.Compared with linear amplifier,this power amplifier has higher efficiency.It can be used in the multi-beam transmitter or other radar transmitter that needs amplitude weighting.It is of high value for study and application prospect.

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Available abstract

Key concepts: LDMOS, RF power amplifier, Amplifier, Power-added efficiency, Linear amplifier, Electrical engineering, FET amplifier, Transistor