Electromagnetic Reverberation Chambers

Bernard Démoulin is a professor at the Institute of Electronics, Micro, and Nanotechnologies (IEMN) in Lille, France. Philippe Besnier is a researcher at the National Center for Scientific Research (CNRS) in France.

• Preface xiiiForeword xvPaolo CORONAIntroduction xixChapter 1. Position of the Reverberation Chambers in Common Electromagnetic Tests 11.1. Introduction 11.2. Electromagnetic fields and plane waves 21.3. Electromagnetic tests in confined areas 131.4. Discussion 261.5. Bibliography 28Chapter 2. Main Physical Features of Electromagnetic Cavities 292.1. Introduction 292.2. Reduction of the modes in a 1D cavity 302.3. Physical features of an empty rectangular cavity 442.4. The 3D cavity operating in stirred modes 692.5. Discussion 772.6. Bibliography 80Chapter 3. Statistical Behavior of Stirred Waves in an Oversized Cavity 833.1. Introduction 833.2. Descriptions of the ideal random electromagnetic field 843.3. Simulation of the properties of an ideal random field 933.4. Contribution of the statistical tests 1043.5. Balance of power in a reverberation chamber 1213.6. Discussion 1303.7. Bibliography 132Chapter 4. Impact of the Physical and Technological Parameters of a Reverberation Chamber 1354.1. Introduction 1354.2. Main parameters for reverberation chamber design 1364.3. The usual techniques of mode stirring 1534.4. The characterization of reverberation chambers 1644.5. Discussion 1884.6. Bibliography 190Chapter 5. Radiated Immunity Tests in a Reverberation Chamber 1935.1. Introduction 1935.2. The calibration process 1945.3. Examples of calibration results 2065.4. Implementing of the immunity test for a piece of equipment 2105.5. Immunity test in reverberation and anechoic chambers 2205.6. Rectangular components of the electric field and the total electric field 2265.7. Discussion 2285.8. Bibliography 230Chapter 6. Emissivity Tests in Reverberation Chambers 2336.1. Introduction 2336.2. A few notions on electromagnetic radiation and antennas 2346.3. Measurement of the total radiated power in free space 2496.4. Measurement of the unintentional emission of a device under test 2526.5. Measurement examples of the total radiated power 2626.6. Total radiated power and radiated emissivity 2696.7. Measurement of the efficiency and of the diversity gain of the antennas 2726.8. Discussion 2756.9. Bibliography 276Chapter 7. Measurement of the Shielding Effectiveness 2797.1. Introduction 2797.2. Definitions of the shielding effectiveness 2807.3. Measurement of the effectiveness of shielded cables and connectors in reverberation chambers 2877.4. Measurement of the attenuation of the shielded enclosures 3027.5. Measurement of the shielding effectiveness of the materials 3077.6. Discussion 3167.7. Bibliography 318Chapter 8. Mode Stirring Reverberation Chamber: A Research Tool 3218.1. Introduction 3218.2. A non-ideal random electromagnetic field 3248.3. Studying the correlation of a set of measurements 3368.4. Quantization of the scattered and coherent fields in a reverberation chamber 3498.5. Discussion 3568.6. Bibliography 358APPENDICES 361Appendix 1. Notion of Probability 363A1.1. The random variable concept 363A1.2. Probability concept from intuition 363A1.3. Probability density function (pdf) 364A1.4. Computation of moments 365A1.5. Centered and normalized variables 366A1.6. Computation of the variance and standard deviation 367A1.7. Probability distributions 367A1.8. The cumulative distribution function (cdf) 369A1.9. The ergodism notion 369A1.10. Features of the random stationary variables 372A1.11. The characteristic function 373A1.12. Summary of the main probability distributions 375A1.13. Tables of numerical values of the normal distribution integrals 378A1.14. Bibliography 379Appendix 2. Formulas of the Quality Factor of a Rectangular Cavity 381A2.1. Quality factor of the TMm n p mode 381A2.2. Calculation of the average Q quality factor 382 A2.3. Bibliography 384Appendix 3. Total Field and Total Power Variables 385A3.1. Total field variables 385A3.2. χ2 variable attached to the total field 386A3.3. Total field probability density function 386A3.4. Calculation of the mean of the total field 387A3.5. The pdf of the total power 388A3.6. Calculation of the mean total powers 389Appendix 4. Calculation of the Variances of υφ, υη, υθ 391A4.1. Variance of the υφ and υη variables 391A4.2. Variance of the υθ variable 392Appendix 5. Electric Dipole Formulas 395A5.1. Complete formulas of the electric dipole 395A5.2. Near-field formulas of the electric dipole 397A5.3. Far-field formulas of the electric dipole 397A5.4. Bibliography 398Index 399

"The book is recommended both as a reference for researchers and professionals working with reverberation chambers, and as a textbook for a course on reverberation chambers." (Radio Science Bulletin, 1 December 2011)