Modern Antennas

Fresnel zone of a Gaussian illumination - application to the transport of energy by radiation (Goubeau's waves).
Further reading
Exercises
10 Focused systems
10.1 Introduction
10.2 The Cassegrain antenna
10.3 Tracking systems
10.4 Non axially-symmetric systems
Further reading
Exercises
11 Arrays
11.1 Introduction
11.2 General structure of a phased array (examples). 11.3 Linear array theory
11.4 Variation of gain as a function of direction
11.5 Effects of phase quantization
11.6 Frequency-scanned arrays
11.7 Analogue beamforming matrices
11.8 Further topics
Appendix 11A Comparison of linear and circular arrays
11A.1 Gain of an arbitrary array
11A.2 Gain of a beam cophasal circular array
11A.3 Radiation pattern of a beam cophasal circular array
11A.4 Example: cos a element patterns
11A.5 Comparison of linear and circular arrays
Further reading
Exercises
12 Fundamentals of polarimetry
12.1 Introduction
12.2 Fully polarized waves
12.3 Partially polarized waves
12.4 Polarimetric representation of radar targets
12.5 Partially polarized waves: The Mueller Matrix
12.6 Polarizers and polarization separators for telecommunications antennas and polarimetric radars
Further reading
Exercises
13 Antennas and signal theory
13.1 Introduction
13.2 Equivalence of an aperture and a spatial frequency filter
13.3 Synthesis of an aperture to radiate a given radiation pattern
13.4 Superdirective antennas
13.5 The antenna as a filter of angular signals
Further reading
Exercises
14 Signal processing antennas
14.1 Introduction
14.2 Synthetic antennas in radar and sonar
14.3 Imaging of coherent sources
14.4 Imaging of incoherent sources
14.5 High resolution imagery and the maximum entropy method
14.6 Other methods of spectral estimation
14.7 Spatial filtering
Appendix 14A Entropy and probability
14A.1 Uncertainty of an event A of probability p(A). 14A.2 Information gained by the knowledge of an event
14A.3 Uncertainty relative to an alternative
14A.4 First generalization: entropy of a set of events
14A.5 Second generalization: random variable
14A.6 Decision theory: Maximum Entropy
14A.7 Entropy and spectral density
14A.8 Justification of this relationship
Further reading
Exercises
15 Antenna measurements
15.1 Introduction
15.2 Gain measurements
15.3 Radiation pattern measurements
15.4 Time-domain gating
15.6 Impedance and bandwidth
Further reading
Exercises
Index.