Designing transmitters for spectral conformity: power amplifier design issues and strategies

C. Baylis; L. Wang; M. Moldovan; J. Martin; H. Miller; L. Cohen; J. de Graaf

Designing transmitters for spectral conformity: power amplifier design issues and strategies

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Designing transmitters for spectral conformity: power amplifier design issues and strategies

Author(s): C. Baylis ; L. Wang ; M. Moldovan ; J. Martin ; H. Miller ; L. Cohen ; J. de Graaf
DOI: 10.1049/iet-rsn.2010.0334

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Author(s): C. Baylis ¹ ; L. Wang ¹ ; M. Moldovan ¹ ; J. Martin ¹ ; H. Miller ¹ ; L. Cohen ² ; J. de Graaf ²
- Affiliations: 1: Wireless and Microwave Circuits and Systems Program, Department of Electrical and Computer Engineering, Baylor University, Waco, USA
  2: Radar Division, U.S. Naval Research Laboratory, Washington, USA
Source: Volume 5, Issue 6, July 2011, p. 681 – 685
DOI: 10.1049/iet-rsn.2010.0334 , Print ISSN 1751-8784, Online ISSN 1751-8792

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Spectral constraints placed on radar systems by regulatory agencies require the design of highly linear amplifiers. Spectral spreading in power amplifiers is a result of transistors operated in the non-linear regime to optimise efficiency. Various methods are employed by power amplifier designers to maximise both linearity and efficiency. The methods of predistortion, feedforward, envelope tracking, Doherty and ‘linear amplification using non-linear components’ are discussed in this article. Trade-offs and challenges inherent in these design approaches are surveyed.

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Designing transmitters for spectral conformity: power amplifier design issues and strategies

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