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Multimode Transmitters: Easier with Strong Nonlinearity

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Abstract

Traditionally, multimode transmitters are approached from a linear circuit approach, and then significant work follows to improve their abysmal initial energy efficiency. Here we consider the reverse procedure, where the starting point is the circuit with greatest energy efficiency – a switch – surrounded by system architectures which result in exactly the same output signals. This latter approach necessarily leads to polar signal processing and polar modulation techniques.

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References

  1. E. McCune, “Gain for Compressed Amplifiers”, Microwave Journal, May 2002.

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  2. W. Sander, et.al., “Polar Modulator for Multi-Mode Cell Phones”, Proceedings of the Custom Integrated Circuits Conference, IEEE, May 2003, pp. 439–445.

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  3. R. Pullela, et.al., “An Integrated Closed-Loop Polar Transmitter with Saturation Prevention and Low-IF Receiver for Quad-band GPRS/EDGE”, Proceedings of the International Solid State Circuits Conference, IEEE, February 2009, pp. 112–113.

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  4. E. McCune, “High-Efficiency Multi-mode, Multi-band Terminal Power Amplifiers”, IEEE Microwave Magazine, March 2005, vol. 6, pp. 44–55.

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Correspondence to Earl McCune .

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McCune, E. (2010). Multimode Transmitters: Easier with Strong Nonlinearity. In: Roermund, A., Casier, H., Steyaert, M. (eds) Analog Circuit Design. Springer, Dordrecht. https://doi.org/10.1007/978-90-481-3083-2_13

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  • DOI: https://doi.org/10.1007/978-90-481-3083-2_13

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  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-90-481-3082-5

  • Online ISBN: 978-90-481-3083-2

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