Designer notes for microwave antennas / Richard C. Johnson.

Format:

Book

Author/Creator:

Johnson, Richard C. (Richard Clayton), 1930-

Series:

Artech House microwave library

Language:

English

Subjects (All):

Microwave antennas.

Physical Description:

x, 195 pages : illustrations ; 23 cm.

Place of Publication:

Boston : Artech House, 1991.

Contents:

Chapter 2 Basic Design Techniques 11

2.1 Rough Designs 11

2.2 Improved Estimates 13

2.3 Beamwidth Conversions 15

2.4 Theoretical Aperture Distributions 16

Chapter 3 Transmission-Line Characteristics 21

3.1 Waves Between Parallel Planes 21

3.1.1 TE and TM Modes 21

3.1.2 TEM Modes 24

3.2 Waves in Rectangular Guides 25

3.2.1 TE and TM Modes 26

3.3 Surface Characteristics 29

3.4 Two-Wire Transmission Lines 30

3.5 Coaxial Transmission Lines 30

3.6 Circular Waveguides 31

3.7 Propagation Modes 31

Chapter 4 Horns 41

4.1 Rectangular Horns 41

4.1.1 Patterns 41

4.1.2 Directivity and Gain 46

4.1.3 Phase Centers 49

4.2 Circular-Conical Horns 50

4.2.1 Patterns 50

4.2.2 Directivity and Gain 53

4.2.3 Phase Centers 57

4.3 Corrugated Horns 57

4.3.1 Patterns 57

4.3.2 Directivity and Gain 60

4.3.3 Phase Centers 61

4.3.4 Design of Corrugations 62

4.3.5 Impedance Matching 64

Chapter 5 Reflectors 71

5.1 Parabola 71

5.2 Front-Fed Paraboloid 71

5.2.1 Subtended Angle 73

5.2.2 Space Attenuation 74

5.2.3 Condon Lobes 75

5.2.4 Aperture Blockage 75

5.2.5 Beam-Deviation Factor 76

5.3 Offset-Fed Paraboloid 76

5.3.1 Linear Polarization 78

5.3.2 Circular Polarization 78

5.4 Cassegrain Antennas 80

Chapter 6 Radomes and Lenses 85

6.2 Solid-Wall Radomes 88

6.3 A-Sandwich Radomes 93

6.4 Lenses 94

Chapter 7 Waveguide Components 99

7.1 Corners 99

7.1.1 Double-Mitered Corners 99

7.1.2 Single-Mitered Cutoff Corners 100

7.2 Bends 102

7.3 Twists 106

7.4 Tapers 109

Chapter 8 Impedance and Matching 113

8.1 Basic Notation 113

8.2 Reflections from Mismatches 114

8.3 Impedance Measurements and the Smith Chart 115

8.4 Circuit Elements for Matching 118

Chapter 9 Antenna Measurements 137

9.1 Far-Field Phase Taper 137

9.2 Far-Field Amplitude Taper 139

9.3 Extraneous Coherent Signals 140

9.4 Power Transfer 141

9.5 Focusing Techniques 144

9.6 Primary Patterns 150

Chapter 10 Pattern "Talk" 155

10.1 VSWR Patterns 155

10.2 Primary Patterns 156

10.3 Secondary Patterns 161

A.1 Frequency Bands 165

A.2 Properties of Dielectrics 166

A.3 Conductivity of Various Metals 168

A.4 Multiple and Submultiple Prefixes 168

A.5 Fundamental Physical Constants 169

A.6 Greek Alphabet 170

A.7 Decibels and Nepers 171

A.8 Rectangular Waveguides and Flanges 172

A.9 VSWR and Related Terms 174

A.10 Expanded-Metal Mesh Reflectors 176

A.11 Wind Loading on a Paraboloidal Reflector 176

A.12 Effects of Aperture Blockage 177

A.13 Mathematical Models for Main Lobes 180

A.13.1 Parabolic Beam 180

A.13.2 cos-nth Beam 180

A.13.3 Gaussian Beam 181

A.13.4 (sinx)/x Beam 182

A.13.5 Primary Pattern Comparisons 183

A.13.6 Secondary Pattern Comparisons 186

A.14 VSWR

Phase Shift 186

A.15 Radiation Hazards 187

A.16 Sagitta

Phase Errors 188.

Notes:

Includes bibliographical references and index.

ISBN:

0890065217

OCLC:

23144352