Ill conditioning loci in noise parameter determination
An analysis of the problem of noise parameter determination is carried out. It is found that the mathematical problem is ill-posed if all the source reflection coefficients (Γs) used in the measurements fall onto a line, circle or are of a circle in the Smith chart. This is used to expand on existin...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 1996 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/1975 |
| Acceso en línea: | https://hdl.handle.net/2117/1975 |
| Access Level: | acceso abierto |
| Palabra clave: | Microwave circuits Noise circuit noise microwave circuits two-port networks Smith chart accuracy degradation ill conditioning loci linear two-port noise figure noise parameter determination source reflection coefficients Circuits de microones Soroll Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Teledetecció |
| Sumario: | An analysis of the problem of noise parameter determination is carried out. It is found that the mathematical problem is ill-posed if all the source reflection coefficients (Γs) used in the measurements fall onto a line, circle or are of a circle in the Smith chart. This is used to expand on existing criteria for selecting Γ s and to rule out sources of accuracy degradation. |
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