IEC 60154-4:2017 specifies the dimensions of flanges for circular waveguides for use in electronic equipment. It covers requirements for flanges drilled before or after mounting on waveguides. The aim of this document is to specify for waveguide flanges the mechanical requirements necessary to ensure compatibility and, as far as practicable, interchangeability as well as to ensure adequate electrical performance. This edition includes the following significant technical changes with respect to the previous edition: – revise the estimation for return loss at connection interface of waveguides; – add two type of waveguide flange for high frequency application, i.e. over 50 GHz; – expand the operation frequency range up to 3,3 THz; – rename the frequency band over R1200, i.e. R1.2K.<\/p>\n
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| 2<\/td>\n | National foreword <\/td>\n<\/tr>\n | ||||||
| 5<\/td>\n | Annex ZA(normative)Normative references to international publicationswith their corresponding European publications <\/td>\n<\/tr>\n | ||||||
| 7<\/td>\n | English CONTENTS <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | FOREWORD <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | 1 Scope 2 Normative references 3 Terms and definitions 4 General 4.1 Standardized types 4.2 Type designation <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | 5 Mechanical requirements 5.1 General requirements both for assemblies and for unmounted flanges 5.1.1 Materials 5.1.2 Locating holes 5.1.3 Shank diameter of fixing bolts used for location 5.1.4 Relation between shank and locating hole diameters 5.1.5 Over-all dimensions and thickness of flanges 5.1.6 Surface roughness of contact area of contact flanges 5.1.7 Flatness of contact area <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | 5.2 General requirements for assemblies 5.2.1 Positioning of the holes 5.2.2 Perpendicularity of the contact area 5.3 Additional requirements for unmounted flanges 5.3.1 General 5.3.2 Shape of aperture 5.3.3 Positioning of the holes 5.3.4 Ordering information Tables Table 1 \u2013 Flatness of contact area <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | Annex A (normative) Dimensions of flanges for preferred waveguide sizes <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | Table A.1 \u2013 Dimensions of pressurizable type J flangesfor circular waveguides (preferred sizes) <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | Annex B (normative) Dimensions of flanges for both intermediate and preferred waveguide sizes <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | Figures Figure B.1 \u2013 Flanges for waveguide size C 18 up to C 28.7 <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | Figure B.2 \u2013 Flanges for waveguide size C 30 up to C 46.2 <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | Table B.1 \u2013 Dimensions of pressurizable type J flanges for circular waveguides (preferred and intermediate sizes) <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | Figure B.3 \u2013 TYPE F Flange for waveguide sizes C580 up to C 29000 <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | Figure B.4 \u2013 TYPE G Flange for waveguide sizes C580 up to C 29000 <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Flanges for waveguides – Relevant specifications for flanges for circular waveguides<\/b><\/p>\n |