F. H. Raab, RF and Microwave Power Amplifiers.
Boston, MA: Artech House, 2025.

• Classes A - F and continuous-mode
• Average efficiency, SWR effects, transistors
• Detailed theory with practical insights
• www.artechhouse.com

J. L. B. Walker, D. P. Myer, F. H. Raab, and C. Trask, Classic Works in RF Engineering: Combiners, Couplers, Transformers, and Magnetic Materials.
Boston, MA: Artech House, 2006.

• Ferrites and inductors
• Transmission-line transformers
• Power combiners and splitters
• Quadrature-combined power amplifiers
• Reprints of many fundamental papers that are hard to find
• www.artechhouse.com

H. L. Krauss, C. W. Bostian, and F. H. Raab, Solid State Radio Engineering.
New York: Wiley, 1980.

• Concise introduction to RF power amplifiers and systems
• Emphasizes bipolars but applicable to modern RF-power devices as well
• Available new from Wiley or used on eBay.

F. H. Raab, P. Asbeck, S. Cripps, P. B. Kenington, Z. B. Popovic, N. Pothecary, J. F. Sevic, and N. O. Sokal, "Power Amplifiers and Transmitters for RF and Microwave," IEEE Trans. Microwave Theory Tech., vol. 50, no. 3, pp. 814 - 826, March 2002.

• Overview of both power amplifiers and systems
• Download this paper

F. H. Raab, P. Asbeck, S. Cripps, P. B. Kenington, Z. B. Popovic, N. Pothecary, J. F. Sevic, and N. O. Sokal, "RF and Microwave Power Amplifier and Transmitter Technologies," High Frequency Electronics, five-part series: vol. 2, no. 3, pp. 22 - 36, May 2003; vol. 2, no. 4, pp. 22 - 36, July 2003; vol. 2, no. 5, pp. 34 - 48, Sep. 2003; vol. 2, no. 6, pp. 38 - 49, Nov. 2003; vol. 3, no. 1, pp. 46 - 54, Jan. 2004.
• This five-part series of papers from High Frequency Electronics is an expansion (factor of three) of the MTT 50th-Anniversary paper.
• Download Part 1: Introduction, average efficiency, transistors
• Download Part 2: RF-power amplifiers
• Download Part 3: Transmitter architectures
• Download Part 4: Linearization
• Download Part 5: Emerging techniques

• Concise explanation of various measures
• Instantaneous and average
• Drain, overall, power-added (PAE)
• Important for performance with specific signals
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F. H. Raab, "Efficiency of Doherty RF-Power Amplifier Systems," IEEE Trans. Broadcasting, vol. BC-33, no. 3, pp. 77 - 83, Sept. 1987.
• Basic priciples
• Two- and three-stage configurations
• Instantaneous and average efficiency
• Parameters for maximum average efficency
• Download this paper

F. H. Raab, "Efficiency of Outphasing Power-Amplifier Systems," IEEE Trans. Commun., vol. COM-33, no. 10, pp. 1094 - 1099, Oct. 1985.
• Basic priciples
• Instantaneous and average efficiency
• Parameters for maximizing average efficency
• Download this paper

F. H. Raab, "Average Efficiency of Class-G Power Amplifiers," IEEE Trans. Consumer Electronics, vol. CE-32, no. 2, pp. 145 - 150, May 1986.
• Modulators for EER and envelope tracking
• Two and three supply voltages
• Average efficency
• Download this paper

F. H. Raab, "Intermodulation Distortion in Kahn-Technique Transmitters," IEEE Trans. Microwave Theory Tech., vol. 44, no. 12, part 1, pp. 2273 - 2278, Dec. 1996.
• Envelope Elimination and Restoration
• Effect of bandwidths of envelope and phase
• Effect of timing misalignment
• Download this paper

F. H. Raab, "Radio Frequency Pulsewidth Modulation," IEEE Trans. Commun., vol. COM-21, no. 8, pp. 958 - 966, Aug. 1973.
• Pulse-width modulation of class-D PA
• Spectrum
• Efficency
• Download this paper