By Aleksandar Tasic, Wouter A. Serdijn, John R. Long
With one thousand million – quickly to be billion - mobile phones in move, the subsequent problem is to make mobile radio capabilities adaptive to their setting. This booklet presents a accomplished theoretical framework for optimizing functionality, discussing joint optimization of Noise determine and enter Intercept element in receiver structures. additionally tested are unique ideas to optimize voltage managed oscillators and low-noise amplifiers, minimizing energy intake whereas protecting enough procedure functionality.
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Additional resources for Adaptive Low-Power Circuits for Wireless Communications (Analog Circuits and Signal Processing)
The source temperature T0. , an antenna with a noise temperature TA) is generally KTAB, the calculation of the output noise power using the noise factor (Eq. 32)) is correct only if TA=T0. 32) Finally, the equivalent noise factor F for the cascaded connection of the stages is given by Friis formula , 26 Adaptive Low-Power Circuits for Wireless Communications F F1 F2 1 F3 1 ... 33) where gi and Fi are the power gain and noise factor values of the corresponding stages. 4 TE1 TE 2 TE 3 ...
L. Edwards and J. H. Sinsky, “A New Criterion for Linear Two-Port Stability Using a Single Geometrically Derived Parameter,” IEEE Transactions on Microwave Theory and Techniques, vol. 40, no. 12, pp. 2303-2311, December 1992.  G. Lombardi, B. Neri, “Criteria for the Evaluation of Unconditional Stability of Microwave Linear Two-Ports: A Critical Review and New Proof”, IEEE Transactions on Microwave Theory and Techniques, vol. 47, no. 6, pp. 746-751, June 1999  O. F. Bokk and E. B. Gribov, “Small-Signal Calculation of the Amplitude of the Third-Order Combination Frequency in a Transistor Amplifier”, Telecommunications and Radio Engineering, vol.
6: The Weaver architecture. The image signal can also be suppressed by two consecutive downconversions with quadrature LO signals. This is shown in Fig. 6. 7: A double-quadrature downconverter. Image suppression using a double-quadrature downconverter [6-8] is shown in Fig. 7. After the first quadrature downconversion, signals are again converted in quadrature to lower frequencies, allowing for the image cancellation and transfer of the desired signal. 2 describes in detail the transformation of signals and their spectra in image-reject architectures (Figs.
Adaptive Low-Power Circuits for Wireless Communications (Analog Circuits and Signal Processing) by Aleksandar Tasic, Wouter A. Serdijn, John R. Long