Array and Phased Array Antenna Basics (PDF)

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Array and Phased Array Antenna Basics

Description:    There is a growing interest in array and phased array antenna systems from industries such as
                mobile communications, satellite broadcasting, radar and radio astronomy, but the range of titles
                currently available on the market are theoretical and heavy on maths. This easy to read volume
                will explain the principles of array and phased array antennas at an introductory level, without
                relying heavily on a thorough understanding of electromagnetics or even antenna theory. Although
                the principles will be explained mathematically, the introduction will be based on the arrays
                physical characteristics rather than mathematics as this will make the book far more appealing,
                reaching an audience that is easily (but unnecessarily) deterred by high level maths. The reader
                will be guided into the necessary mathematics and, after having read the book, should be able, or
                at least should have lost the fear, to read the specialist books on the subject.

Contents:       Preface.



                1 Radiation.

                1.1 The Early History of Electricity and Magnetism.

                1.2 James Clerk Maxwell, The Union of Electricity and Magnetism.

                1.3 Radiation by Accelerated Charge.

                1.4 Reactive and Radiating Electromagnetic Fields.


                2 Antennas.

                2.1 The Early History of Antennas.

                2.2 Antenna Developments During the First World War.

                2.3 Antenna Developments in Between the Wars.

                2.4 Antenna Developments During The Second World War.

                2.5 Post War Antenna Developments.


                3 Antenna Parameters.

                3.1 Radiation Pattern.

                3.2 Antenna Impedance and Bandwidth.

                3.3 Polarisation.

                3.4 Antenna Effective Area and Vector Effective Length.
3.5 Radio Equation.

3.6 Radar Equation.


4 The Linear Broadside Array Antenna.

4.1 A Linear Array of Non-Isotropic Point-Source Radiators.

4.2 Plane Waves.

4.3 Received Signal.

4.4 Array Factor.

4.5 Side Lobes and Grating Lobes.

4.6 Amplitude Taper.


5 Design of a 4-Elements, Linear, Broadside, Microstrip Patch Array Antenna.

5.1 Introduction.

5.2 Rectangular Microstrip Patch Antenna.

5.3 Split-T Power Divider.

5.4 Transmission and Reflection Coefficients for a Corporate Fed Array Antenna.

5.5 Simulation, Realisation and Measurement.


6 The Linear Endfire Array Antenna.

6.1 Introduction.

6.2 Phase Differences.

6.3 Hansen-Woodyard Endfire Array Antenna.

6.4 Mutual Coupling.

6.5 Yagi-Uda Array Antenna.


7 The Linear Phased Array Antenna.

7.1 Linear Phase Taper.

7.2 Beam Broadening.

7.3 Grating Lobes and Visible Space.

7.4 Means of Phase Shifting.

8 A Frequency Scanned Slotted Waveguide Array Antenna.

8.1 Slotted Waveguide Array Antenna.

8.2 Antenna Design.

8.3 Validation.


9 The Planar Array and Phased Array Antenna.

9.1 Geometry.

9.2 Planar Array Antenna.

9.3 Planar Phased Array Antenna.


10 Special Array Antenna Configurations.

10.1 Conformal Array and Phased Array Antennas.

10.2 Volume Array and Phased Array Antennas.

10.3 Sequential Rotation and Phasing.

10.4 Reactive Loading.


11 Array and Phased Array Antenna Measurement.

11.1 Input Impedance, Self Coupling and Mutual Coupling.

11.2 Radiation Pattern Measurement.

11.3 Scan Element Pattern.

11.4 Waveguide Simulator.


Appendix A Complex Analysis.

A.1 Complex Numbers.

A.2 Use of Complex Variables.

Appendix B Vector Analysis.

B.1 Notation.

B.2 Addition and Subtraction.

B.3 Products.

B.4 Derivatives.

Appendix C Effective Aperture and Directivity.

Appendix D Transmission Line Theory.
            D.1 Distributed Parameters.

            D.2 Guided Waves.

            D.3 Input Impedance of a Transmission Line.

            D.4 Terminated Lossless Transmission Lines.

            D.5 Quarter Wavelength Impedance Transformer.

            Appendix E Scattering Matrix.

            E.1 Normalised Scattering Matrix.

            E.2 Unnormalised Scattering Matrix.


            Appendix F Voltage Incident at a Transmission Line.

            Appendix G Cascaded Scattering Matrices.


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