Adaptive Low-Power Circuits for Wireless Communications by Aleksandar Tasic, Wouter A. Serdijn, John R. Long

By Aleksandar Tasic, Wouter A. Serdijn, John R. Long

With one thousand million – quickly to be billion - mobile phones in movement, the subsequent problem is to make mobile radio features adaptive to their atmosphere. This e-book presents a entire theoretical framework for optimizing functionality, discussing joint optimization of Noise determine and enter Intercept aspect in receiver platforms. additionally tested are unique suggestions to optimize voltage managed oscillators and low-noise amplifiers, minimizing energy intake whereas retaining sufficient approach functionality.

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Extra resources for Adaptive Low-Power Circuits for Wireless Communications (Analog Circuits and Signal Processing)

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1 Third-Order Intercept Point Referring to Eqs. 21), and assuming A1=A2=A, it can be seen that the output power of the third-order products increases with the cube of the input power, whereas the fundamental output power is proportional to the input power [23]. This effect is shown in Fig. 3. A hypothetical intersection point where the first-order power product (P2) and the third-order power product (POIM3) are equal is called third-order intercept point (IP3). 2 describes the notation that is used throughout this book.

3: Performance parameters of the receiver circuits. Performance\Blocks G NF OIP3 LNA 15dB 2dB 15dBm RF Filter -2dB 2dB - Mixer 4dB 14dB 10dBm Referring to the definitions and calculations of the previous sections, we can determine the receiver performance parameters as follows. x The system power gain is G G1  G2  G3 . 4, this results into G=17dB. 47) where g1 and g2 are the linear gain terms (total gain g=g1g2). 6dB. x The system IIP3 is IIP3 10log(10  OIP 31 G1 10  10  OIP 32  G2 G1 10  10  OIP 33  G3  G2 G1 10 ) .

Lee, Design of CMOS Radio-Frequency Integrated Circuits, Cambridge University Press, 2003. [48] F. Friis, “Noise Figure of Radio Receivers”, Proceedings IRE, vol. 32, pp. 419-422, July 1944. 38 Adaptive Low-Power Circuits for Wireless Communications [49] E. Hafner, “The Effect of Noise in Oscillators,” Proceedings IEEE, vol. 54, no. 2, pp. 179–198, February 1966. [50] W. A. Edson, “Noise in Oscillators”, Proceedings IRE, vol. 48, 14541472, August 1960. [51] J. Rutman, “Characterization of Phase and Frequency Instabilities in Precision Frequency Sources: 15 Years of Progress”, Proceedings IEEE, vol.

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