EE 474: Antennas and Propagation Fall 2015

Instructor Information Zhengqing (ZQ) Yun Hawaii Center for Advanced Communications (HCAC) Office: POST 201B Phone:

Time and Location Monday, Wednesday, and Friday 12:30 - 1:20pm Holmes 248

Prerequisites EE 371 or instructor approval

Office Hours 1:30 - 2:30pm, M, W, F, or by appointment

Grading Homework, quizzes: 30% One midterm: 30% Final exam: 40%

Textbooks Iskander: Electromagnetic Fields and Waves Balanis: Antenna Theory Bertoni: Radio Propagation for Modern Wireless Systems Others: John Krauss, Warren Stutzman, etc.

Contents EM Field and Waves:  Maxwell's Equations  Polarization  Vector Potentials  Radiation  Near/Far-field concept Antenna Parameters:  Radiation Pattern  Power Density, Intensity  Beamwidth, Directivity, Gain, Efficiency, Bandwidth  Input Impedance Linear Antennas:  Infinitesimal and Short Dipoles  Linear Wire Antennas  Half-Wavelength Dipoles  Ground Effects Loop Antennas:  Circular Loop Antennas  Other shapes Array Antennas:  Sum of Coherent Waves  Two-Element Arrays  N-Element Arrays  Design Procedure

Contents Integral Equations and Numerical Method:  Integral Equations  Method of Moments  Self- and Mutual-Impedance Broadband and Frequency Independent Antennas:  Biconical Antennas  Spiral Antennas  Log Periodic Antennas  Fractal Antennas Aperture and Horn Antennas:  Huygens Principle  Rectangular Aperture  Circular Aperture  Fourier Transform and Applications  Edge Effect Due to Diffraction Reflector Antennas:  Plane Reflector  Corner Reflector  Parabolic Reflector Microstrip Antennas:  Patches  Circular Polarization

Contents Radio Propagation for Wireless Communications:  Wireless Communications Links and Cellular Systems  Large-scale path loss  Small-scale fading and multipath  Free Space Propagation  Empirical Propagation Modeling Ray-Tracing and Applications for Site-Specific Propagation Prediction:  Background  Ray Tracing Algorithms  New efficient ray tracing methods  Propagation modeling in urban environments  Ray tracing in atmosphere Exploitation of geospatial resources for propagation prediction:  NASA's WorldWind; Microsoft's Virtual Earth; Google Earth  Ray tracing in Google Earth

Course objectives Understanding fundamental concepts:  Radiation of EM field  Propagation of EM waves  Near/far field Understanding basic antenna parameters Understanding how various antennas work Understanding basic antenna design principles Further understanding of EM Waves