By Aleksandar Tasic, Wouter A. Serdijn, John R. Long
With a thousand million – quickly to be billion - mobile phones in flow, the following problem is to make mobile radio features adaptive to their atmosphere. This publication presents a entire theoretical framework for optimizing functionality, discussing joint optimization of Noise determine and enter Intercept element in receiver structures. additionally tested are unique options to optimize voltage managed oscillators and low-noise amplifiers, minimizing strength intake whereas protecting enough process functionality.
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O. North, “The Absolute Sensitivity of Radio Receivers”, RCA Review, vol. 6, pp. 332-343, January 1928.  H. Rothe and W. Dahlke, “Theory of Noise Fourpoles”, Proceedings IRE, vol. 44, no. 6, pp. 811-818, June 1956.  H. A. , “Representation of Noise in Linear Two-ports”, Proceedings IRE, vol. 48, pp. 69-74, January 1960.  H. Hillbrand and P. H. Russer, “An Efficient Method for ComputerAided Noise Analysis of Linear Networks,” IEEE Transactions on Circuits Systems, vol. CAS-23, pp. 235–238, April 1976.
13) The parameters ai are time dependent for time-varying systems. , -10dBm) or for heavily amplified signals, an RF circuit is characterized by a nonlinear model. By inspecting the response to a sinusoidal excitation (x(t)=AcosZt) using the nonlinear model (Eq. 13)), we can describe numerous nonlinearity phenomena (from Eq. 14)). y (t ) 3 1 a2 A2 a A2 ( a1 A a3 A3 ) cos Zt 2 cos 2Zt a3 A3 cos3Zt ... 14) 2 4 2 4 In the remainder of this section we will comment on gain compression, desensitization, cross modulation and intermodulation [22-39].
Strutt, “Cross Modulation and Nonlinear Distortion in RF Transistor Amplifiers,” IRE Transactions on Electron Devices, pp. 457-467, October 1959.  B. Ebstein, R. Huenemann and R. Sea, “The Correspondence of Intermodulation and Cross Modulation in Amplifiers and Mixers”, Proceedings of the IEEE, pp. 1514-1516, August 1967, (see comments in pp. 355-357, March 1968).  B. H. Goldberg, “Predict Intermodulation Distortion”, Electronic Design, pp. 76-78, May 1970.  M. E. Goldfarb, “Intermodulation Products,” Microwave Journal, pp.
Adaptive Low-Power Circuits for Wireless Communications (Analog Circuits and Signal Processing) by Aleksandar Tasic, Wouter A. Serdijn, John R. Long
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