78 



INDEX 



Gain, extended definitions of, 43 



unilateral U, 59 

 General-circuit-parameter representation, 36, 



61 

 Granlund, J., 17, 74 

 Grid-noise resistance, 66 

 Groendijk, H., 46 

 Gyrator, lossless, 59 



Hermitian conjugate, 11 

 Hermitian matrix, 11 



Imbedding, 12 



lossless, 20 



passive dissipative, 57 



reciprocal, 59 

 Impedance representation, 6, 9, 38 

 Indefinite matrix, 16, 52 

 Interconnection of amplifiers, lossless, 6, 54 



passive dissipative, 55 

 Invariants, 25, 31 



Knol, K. S., 46 



Lossless circulator, 69 



Lossless feedback, 54 



Lossless gyrator, 59 



Lossless imbedding, 20 



Lossless interconnection, 54 



Lossless transformation, 9, 12, 19, 61 



Losslessness, condition of, 13 



Maser, 7, 68 



Mason, S. J., 3, 59, 61 



Matrix, characteristic-noise, 22, 38, 41 



general-circuit, 61 



general representation, 34 



Hermitian, 11 



impedance, 9 



indefinite, 16, 52 



negative definite, 16, 52 



noise column, 47, 61 



permutation, 45 



positive definite, 11, 16, 52 



scattering, 69 



semidefinite, 11, 16 



T, 34, 39, 40 

 Matrix formulation, of exchangeable power, 

 44 



of exchangeable-power gain, 45 



of extended noise figure, 46 



Matrix formulation, of stationary-value 



problem, 19 

 Mismatch, input, 6, 54, 61, 71 



»-to-w-terminal-pair network transforma- 

 tions, 6, 25 

 »-to-one-terminal-pair network transforma- 

 tion, 6, 18 

 Negative definite matrix, 16, 52 

 Network transformations, n-to-w-terminal- 

 pair, 6, 25 



w-to-one-terminal-pair, 6, 18 

 Networks, classification of, 14, 24, 40 



in thermal equihbrium, 25 



pure-noise, 47 



with coherent sources, 25 

 Noise column matrix, 47, 61 

 Noise figure, excess, 48 



extended, 43, 46 



matrix formulation of, 46 

 Noise measure, 4, 42, 48 



allowed ranges of, 49 



for conventional low-frequency vacuum 

 tube, 66 



for triode, 66 



optimum (Afe.opt), 54, 55 

 Noise parameter pT, 39 



in mixed voltage-current representation, 41 

 Noise performance, criterion for amplifier, 5 



optimization of, 61, 68 



single-frequency, 1, 73 



spot, 1 

 Nonreciprocal transformations, 59 

 Nonunilateral amplifier, 66, 71 



Optimization, of amplifier, indefinite case, 61 



of maser amplifiers, 7 1 



of negative-resistance amplifiers, definite 

 case, 68 

 Optimum noise measure (ilfe.opt), 54, 55 



for low-frequency vacuum tube, 66 



Parametric ampUfier, 73 

 Passive dissipative imbedding, 56 

 Passive dissipative interconnection of ampli- 

 fiers, 56 

 Passive network at equilibrium, 26 

 Permutation matrix, 45 

 Positive definite matrix, 11, 16, 52 

 Power, available, 14 

 exchangeable, 15, 44 



