July 2007

Rev 3

1/7

AN1229

Application note

SD2932 RF MOSFET for 300 W FM amplifier

Introduction

This application note gives a description of a broadband power amplifier operating over the

frequency range 88 - 108 MHz using the new STMicroelectronics RF MOSFET transistor

SD2932.

Table 1.

Typical achievable performances

Parameter

Performance

Device

1 X SD2932

Frequency

88-108 MHz

Vdd

50 V

Idq

200 mA

Pout

300 W

Gain

>19 dB

Input return loss

< -11 dB

Drain efficiency

>70%

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