METHODS OF MEASUREMENT FOR RADIO EQUIPMENT USED IN SATELLITE EARTH STATIONS - MEASUREMENT COMMON TO SUB-SYSTEMS AND COMBINATIONS OF SUB-SYSTEMS. SEC 5: NOISE TEMPERATURE MEASUREMENTS
International Electrotechnical Committee
FOREWORD
PREFACE
Clause
1 Scope
2 Introduction
3 Definitions
3.1 Noise power spectral density (noise power density)
3.2 Available noise power density
3.3 Noise temperature
3.4 Average noise temperature
3.5 Noise bandwidth
3.6 Operating noise temperature or system noise temperature
3.7 Reference noise source
3.8 Equivalent input noise temperature of a two-port device
3.9 Average noise figure
4 General considerations
5 Methods of measurement
5.1 Y-factor methods
5.1.1 Power meter method
5.1.2 Variable attenuator method
5.2 3 dB loss methods
5.2.1 Variable source method
5.2.2 Fixed source method
5.3 Automatic noise figure meter (ANFM) method
5.4 C.W. method
6 Presentation of results
7 Details to be specified
APPENDIX A - Measurement of the noise bandwidth
FIGURES
Covers the methods of measurement to be used in order to evaluate the noise temperature and the noise figure of sub-systems, and/or combinations of sub-systems, under linear conditions where appropriate ports are available.
| Document Type | Standard |
| Status | Current |
| Publisher | International Electrotechnical Committee |
| Committee | SC 12E |
