Recommendation ITU-R P.2040-2 (09/2021) Effects of building materials and structures on radiowave propagation above about 100 MHz
Foreword
Policy on Intellectual Property Right (IPR)
Scope
Annex 1
1 Introduction
2 Basic principles and theory
     2.1 Theory of material electrical properties
          2.1.1 Introduction
          2.1.2 Method
               2.1.2.1 Definitions of electrical constants
               2.1.2.2 Derivation
               2.1.2.3 Non-conducting dielectric
               2.1.2.4 Conducting dielectric
               2.1.2.5 Attenuation rate
          2.1.3 Frequency dependence of material properties
          2.1.4 Models of material properties frequency dependence
     2.2 Effects of material structure on radiowave propagation
          2.2.1 Plane wave reflection and transmission at a single planar interface
               2.2.1.1 Oblique incidence on a plane media interface
               2.2.1.2 Calculation examples
               2.2.1.3 Substitutions available in coefficient values
               2.2.1.4 Coefficients for power flux-densities
               2.2.1.5 Simplified expressions for incident wave in air
          2.2.2 Plane wave reflection and transmission for a single- or multi-layer slab
               2.2.2.1 General method for a multi-layer slab
               2.2.2.2 Simplified method for a single-layer slab
               2.2.2.3 Calculation examples
          2.2.3 Waveguide propagation in buildings
               2.2.3.1 Theory on frequency characteristics of attenuation constant in waveguide
               2.2.3.2 Applicability of waveguide theory
     2.3 Theory and results for frequency selective surface materials
          2.3.1 Frequency selective surfaces
          2.3.2 Theory for wave propagation around the surface of round convexity array
          2.3.3 Calculation results
          2.3.4 Measurement
3 Compilations of electrical properties of materials
Attachment 1 to Annex 1  Alternative method to obtain reflection and transmission coefficients  for building materials represented by N dielectric slabs  based on ABCD matrix formulation
Annex 2
1 Introduction
2 Description of scenarios involving the outdoor-indoor interface
     2.1 Outside-inside propagation: issues concerning entry-loss reference field
     2.2 Propagation losses in the built environment
3 Definitions
     3.1 Definition of building entry loss
     3.2 Definition of building shadowing loss
     3.3 Definition of (e.g. wall) penetration
     3.4 Definition of aperture penetration
     3.5 Definition of building exit loss
4 Measurement of building entry loss
     4.1 Introduction
     4.2 Parameters to be recorded
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