| Autore |
Kalashnikov Vadim Serafimovich
|
| Pubbl/distr/stampa |
Singapore : , : Springer, , [2021]
|
| Descrizione fisica |
1 online resource (163 pages)
|
| Disciplina |
621.38028
|
| Collana |
Springer Aerospace Technology
|
| Soggetto topico |
Microwave antennas - Testing
Antennas (Electronics) - Testing
Near-fields - Measurement
|
| ISBN |
981-336-436-X
|
| Formato |
Materiale a stampa  |
| Livello bibliografico |
Monografia |
| Lingua di pubblicazione |
eng
|
| Nota di contenuto |
Intro -- Preface -- Introduction -- Contents -- Symbols and Abbreviations -- 1 Radio Characteristics of Antennas -- 1.1 The Role of Antennas in Radio Systems -- 1.2 The Structure of Electromagnetic Fields Excited by the Antenna -- 1.2.1 Types of Variable Electromagnetic Fields Excited by the Antenna in the Surrounding Space -- 1.2.2 Near-Field and Far-Field Regions of the Antenna -- 1.3 Internal Parameters of Transmitting Antennas -- 1.3.1 The Balance of Active and Reactive Power in the Antenna -- 1.3.2 Input Impedance of the Antenna -- 1.3.3 The Efficiency of the Antenna -- 1.3.4 The Parameters that Characterize the Match of the Antenna Input -- 1.3.5 The Conclusions from Section 1.3 -- 1.4 The External Parameters of Transmitting Antennas -- 1.4.1 The Amplitude and Power Radiation Pattern -- 1.4.2 A Phase Radiation Pattern, the Phase Front and the Phase Center of the Antenna -- 1.4.3 Polarization Characteristic -- 1.4.4 The Directivity and Gain -- 1.5 Radio Characteristics of Receiving Antennas -- 1.5.1 The Identity of Some Radio Characteristics of Antennas in the Transmission and Reception Modes -- 1.5.2 The Directivity, Gain, and the Effective Area of the Receiving Antenna -- 1.5.3 The Noise Temperature of the Antenna -- References -- 2 Methods of Measurement of Radio Characteristics of Antennas (Brief Overview) -- 2.1 Introduction -- 2.2 Measurements in the Far Zone -- 2.2.1 Outdoor Far-Field Range Method -- 2.2.2 The Aerial Method -- 2.2.3 The Radio Astronomy Method -- 2.3 The Compact Antenna Test Range Method (CATR, the Collimator Method) -- 2.4 The Near-Field Measurement Method -- 2.5 The Combined Method -- References -- 3 Planar Near-Field Antenna Measurements: Calculation Expressions -- 3.1 Electrodynamic Fundamentals of the Amplitude-Phase Measurements -- 3.2 Derivation of Calculating Formulas Based on the Kirchhoff Approximation.
3.3 Analysis of Calculating Expressions Based on the Solution of a Homogeneous Wave Equation -- 3.4 Discrete Analogs of Integral Transforms -- 3.5 Probe Correction -- 3.6 Gain Measurement -- 3.7 Methods for Numerical Calculation of Integral Sums -- 3.8 Measurement Errors When Scanning on a Planar Surface -- References -- 4 Planar Near-Field Facility: Electrical and Mechanical Parts, Software -- 4.1 Generalities -- 4.2 Facility Block Scheme -- 4.3 Mechanical Part of the Facility -- 4.4 Linear Encoders -- 4.4.1 Principle of Operation of the Optoelectronic Linear Encoders -- 4.4.2 Output Codes of the Absolute Encoders -- 4.5 Rotary Supports -- 4.6 Probes and Variants of Its Mounting -- 4.6.1 Dipoles and Loop Probes -- 4.6.2 Open-Ended Waveguide Probes -- 4.6.3 Log-Periodic Antenna Probes -- 4.6.4 Probe Feeding Systems -- 4.7 Ampliphasemeters -- 4.8 DUT Aligning -- 4.9 Facility Software -- 4.10 Instrumental Measurement Errors -- 4.11 The Time Budget for Automated Measurements -- References -- 5 Spherical Near-Field Antenna Measurements -- 5.1 Problem Statement, Basic Coordinate Systems -- 5.2 Selecting the Size of the Scan Area and the Radius of the Measurement Sphere -- 5.3 The Algorithm to Calculate RP Based on the Measurement Results -- 5.4 Probe Correction -- 5.5 Algorithms for Calculating Antenna Directivity and Gain Based on Measurement Results -- 5.6 Algorithm for Calculating Antenna Aperture Field Based on Spherical Amplitude-Phase Measurements -- 5.7 Errors in Spherical Measurements -- 5.8 Kinematic Schemes of the Spherical Near-Field Facilities -- References -- 6 Antenna Testing -- 6.1 Tests Purpose and Objective -- 6.2 Laboratory Tests -- 6.3 Mechanical Tests -- 6.4 Climatic Tests -- 6.5 Flight Tests -- 6.6 Methods for Antenna Radiation Pattern Measurement at Model Aircrafts -- References.
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| Record Nr. | UNINA-9910484432603321 |
Info
Displacement errors in antenna near-field measurements and their effect on the far field / / Lorant A. Muth
