Four noise parameters of 2-ports with complex topology

Four noise parameters of 2-ports with complex topology

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A method for computing the four noise parameters of a 2-port with arbitrary topology is described. The tool used is the adjoint network concept in connection with a computer program for electrical-network analysis. It is shown that only a small additional effort is needed to obtain a complete description of the noise behaviour for any source admittance.


    1. 1)
      • Engberg, J.S.: `Simultaneous input power match and noise optimization using feedback', R69ELS-79, General Electrical Technical Information Series, 1969.
    2. 2)
      • I.V. Sukhodoyer . Noise parameters of passive four-terminal networks. Telecommun. & Radio Eng. , 37 - 45
    3. 3)
      • S. Iversen . The effect of feedback on noise figure. Proc. Inst. Elec. Electron. Eng. , 540 - 542
    4. 4)
      • R. Rohrer , L. Nagel , R. Meyer , L. Weber . Computationally efficient electronic-circuit noise calculations. IEEE J. Solid-State Circuits , 204 - 213
    5. 5)
      • H. Rothe , W. Dahlke . Theory of noisy four-poles. Proc. Inst. Radio Eng. , 811 - 818
    6. 6)
      • K.H. Leung , R. Spence . Multiparameter large-change sensitivity analysis and systematic exploration. IEEE Trans. , 796 - 804

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