RF Amplifiers Theory

Introduction to amplifier design - These tutorials will teach you in very easy steps how to design A class amplifiers.

A.M. tutorial - This tutorial is designed to help explain some of the concepts involved in RF power measurement for amplitute modulated signals.

Base-Station RF Power-Amplifier Biasing - Power amplifiers used in base stations require biasing for proper RF performance. This article explains the two classes of biasing that are prevalent in the RF industry, analyzes their characteristics, and shows implementations with existing ICs.

Vacuum Tube Amps - How the tube converts DC to RF Power

4CX250B PA regulated supplies - A PA project by John, G8MN

A.M. tutorial - This tutorial is designed to help explain some of the concepts involved in RF power measurement for amplitute modulated signals.

Base-Station RF Power-Amplifier Biasing - Power amplifiers used in base stations require biasing for proper RF performance. This article explains the two classes of biasing that are prevalent in the RF industry, analyzes their characteristics, and shows implementations with existing ICs.

Desgin Power amplifiers with Genesys - Article on how use Genesys sowftware to design RF power amplifiers

Enable Low Cost RF Power Amplifiers - A new paradigm for low cost, reliable RF amplifier ‘pallets’ has been enabled by new circuit design, manufacturing and thermal management techniques

Highly linear rf power amplifier design - The need of high linearity is one of the principal drivers in the design of power amplifiers for new generation applications

Introduction to amplifier design - These tutorials will teach you in very easy steps how to design A class amplifiers.

Low Noise Microwave Amplifier Design Tutorial Series - This series will follow to completion the full Low Noise Microwave Amplifier design, development and prototyping.

Measuring Zs in solid-state amplifier - Measuring the output impedance (Zs) of solid-state broadband HF amplifiers operating in class AB eham article by ZS6BIM

Medium Frequency Amplifier Circuits Compared - Mark Connelly, WA1ION article on Medium Frequency Amplifier Circuits in PDF format, include some RF amplifier schematics

Microwave RF Amplifier Design Tutorial - This tutorial will set out the design stages required to design a theoretical microwave amplifier

Negative feedback output circuit - Negative feedback is often referred to as shunt feedback in conjunction with emitter degeneration.

Power Aamps RF voltages - This test circuit is easy to duplicate, and demonstrates the extreme voltages that appear in an amplifier when the load is improper for the amount of drive power applied.

Power Gride Tubes - Article on tubes and their usage in power amplifiers design. Explain failures of tube in RF power amplifiers, a common problem in the SB-220 SB-221, TL-922 and other amplifiers.

RF and Microwate Power Amplifiers - RF and Microwave Power Amplifier and Transmitter Technologies, amplifierlinearity, efficiency and available RF power devices.

Selecting the Right Tube - Selecting a tube around which to build a linear amplifier.

Solid-state HF amplifiers - What makes a good solid-state amp ? by Adam Farson, VA7OJ/AB4OJ, May 2002

The Approx. Perfect Amplifier manuscript - Discussion of some design features that would be present in a perfect, or near-perfect, amplifier.

Transistor PA Biasing - Here is a simple circuit that can deliver the peak base current needed for linear ssb operation

Transistor PA Biasing - Here is a simple circuit that can deliver the peak base current needed for linear ssb operation

Using cheap tetrodes in amplifiers - This article is written to dispel some of the misconceptions and misunderstandings about some of the tetrode based linear amplifiers, which are currently available on the amateur market.

Vacuum Tube Amps - How the tube converts DC to RF Power