Near-Field Antenna Measurements: Calculations and Facility Design

INTRODUCTION

SYMBOLS AND ABBREVIATIONS

CHAPTER 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

1.3 Internal parameters of transmitting antennas
1.4 The external parameters of transmitting antennas

1.5 Radio characteristics of receiving antennas

CHAPTER 2 METHODS OF MEASUREMENT OF RADIO CHARACTERISTICS OF ANTENNAS (BRIEF OVERVIEW)

2.1 Measurements in the far zone

2.2 The compact antenna test range method (CATR, the collimator method)

2.3 The near-field measurement method

2.4 The combined method

CHAPTER 3. PLANAR NEAR-FIELD ANTENNA MEASUREMENTS: CALCULATION EXPRESSIONS

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

4.1 Generalities

4.2 Facility block scheme

4.3 Mechanical part of the facility

4.4. Linear encoders
4.5 Rotary supports

4.7. Ampliphasemeters

4.8. DUT aligning

4.9. Facility software

CHAPTER 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

5.8 Kinematic schemes of the spherical near-field facilities.

Chapter 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