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This book covers the basics of the RF power amplifiers, such as amplification
classes, basic circuit topologies, bias circuits and matching networks.
An exhaustive coverage of the power amplifier area is beyond the
scope of the book; therefore, applications, system architecture concepts,
and linearization techniques are not discussed here.
Chapter 1 discusses several basic concepts, terminology and definitions.
Chapter 2 is dedicated to classic RF power amplifiers. Included are
the oldest and best-known classes of amplification: A, B, AB, and C. This
classification is based on the conduction angle of the active device and also
includes the so-called mixed-mode Class C. Separate sections treat bias circuits,
narrowband and broadband matching networks, gain leveling and
VSWR correction, amplitude modulation, stability, thermal calculations,
and Class C frequency multipliers.
Chapter 3 focuses on switching-mode Class D amplifiers. Described are
the idealized operation of these amplifiers as well as practical considerations
(parasitics and non-ideal components, mistuning or frequency variation,
drive considerations). Other sections in this chapter cover Class D circuits
operating in intermediate classes (BD and DE) or as frequency multiplies.
The last section focuses on computer simulation of Class D circuits.
Chapter 4 presents switching-mode Class E power amplifiers. The chapter
begins with an outline of the idealized operation, followed by a discussion
of the practical considerations. Additional sections describe amplitude modulation,
Class E frequency multipliers, and computer simulation of this circuit.
Chapter 5 is dedicated to Class F amplifiers. This includes established
techniques to improve efficiency using harmonic injection in Class B or C
circuits, the so-called Class Fl amplifier (also known as "high-efficiency
Class C" "Class C using harmonic injection," or "biharmonic or polyharmonic
Class C"), but also more recent switching-mode circuits, such as
Classes F2 and F3.
Chapter 6 comments on switching-mode Class S amplifiers and modulators.
Although these circuits are audio- or low-frequency amplifiers, they
are important subsystems in many high-efficiency transmitters. Finally,
Chapter 7 presents several considerations regarding bipolar and MOS RF
power transistors.
B083-RF Power Amplifiers.part1.rar
(10 MB, 下载次数: 510 )
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发表于 2013-11-2 23:24:44
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发表于 2014-2-10 14:40:07
