Thursday, January 12, 2012

12W RF Amplifier 88-108 MHz based RD15HVF1

12W RF Amplifier 88-108 MHz based RD15HVF1

This is the 12W RF amplifier circuit for frequency range of 88MHz to 108MHz (FM broadband). This new FM power amplifier is used the famous MOSFET RD15HVF1. We've chosen the synthesizer N°1 to drive this amplifier circuit. In fact, only 200mW are required to obtain the 12W output power level.

All the impedance networks (Input & Output) have been decided by using the softwares: Mimp.EXE & Genesys. The FM RF amplifier has a 20 dB gain and provides 12W.

Table of frequency vs output level:

Output Power Level
88 MHz
12.1 W
20.8 dB
1.55 A
58 %
98 MHz
12.6 W
21 dB
1.4 A
66 %
108 MHz
11 W
20.4 dB
1.3 A

2W RF amplifier 88-108 MHz based RD15HVF1, source page:

About RF Amplifier
An RF power amplifier is a type of electronic amplifier which is utilised to convert a low-power radio-frequency signal into a larger signal of significant power, usually for driving the antenna of a transmitter. It is usually optimized to have high efficiency, high output Power (P1dB) compression, good gain, good return loss on the input and output, and optimum heat dissipation.

The basic applications of the RF power amplifier include driving to another high power source, driving a transmitting antenna, microwave heating, and exciting resonant cavity structures. Among these applications, driving transmitter antennas is most well known.
More explanation about power audio amplifier can be found at
This is a demonstration about 01A RF Amplifier which is build used old tube component to amplify the signal.

Watch the video:

1 comment:

Nelson Landinez said...

hi, i am designing a power amplifie and i was studying this trasistor and it is perfect to my design. but the problem is, i don't know the input/output impedance to 100Mhz.

if you know this information please let me know.