## A wave amplitude approach to noise analysis with application to a new method of noise measurementJerry J. Sweeney, Georges A. Deschamps, Air Force Avionics Laboratory, University of Illinois at Urbana-Champaign. Dept. of Electrical Engineering Analysis of noise in linear two-ports is approached from the wave amplitude point of view. Different methods of representing noise in a network are discussed and a matrix equation is derived to find the noise figure of a cascade of networks. A set of Stokes parameters is used to derive an expression for the effective input noise temperature for various values of source impedance and making use of the Stokes parameters, a set of linear equations is obtained which can be solved to get the values of the noise parameters and the input impedance corresponding to minimum noise. (Author). |

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### Contents

REPRESENTATION OF NETWORK NOISE | 5 |

IU TRANSFORMATION OF NOISE SOURCES | 10 |

LINEARIZATION OF THE EFFECTIVE INPUT NOISE | 21 |

4 other sections not shown

### Common terms and phrases

amplifier at 500 available noise power Bosma calculated cascaded networks CNJ rH Constant T curves cosh Data for Radio Daywitt defined device effective input noise Electronics Letters equation 16 equation 40 equivalent input noise Equivalent representation Figure 16 H rH H. T. Friis Hirano and Kanema hyperboloid H+ impedance seen looking input noise temperature input port IRE Standards matrix equation measurement technique Microwave n-port network network noise noise analysis noise intensity matrix noise matrix Noise Measurements noise parameters noise source Noisy Networks noisy two-port notation Nyquist theorem obtained optimum source output port pads Proc relation representation of noise rH H rH rH rH Rothe and Dahlke scattering coefficients scattering parameter shown in Figure signal-to-noise ratio Smith Chart source impedance source of Figure source reflection coefficient Stokes parameters subroutine Thermal Noise Trans Transformation of noise transistor amplifier uniform temperature value of q