Course Description: Students will learn to critically evaluate the performance of phased array antenna systems with emphasis on factors that are important for high-performance radar and communication systems such as scanning, sidelobe levels, gain, bandwidth, etc. Concepts will be emphasized and theory will be developed to support key concepts. Students will learn to perform quantitative analyses of array parameters. The effects of scanning on antenna input impedance will be analyzed and array blindness will be demonstrated. A brief introduction to signal processing for digital beamforming and adaptive nulling will be included. The course will utilize the text, but much material will be drawn from other sources.

Course Objectives: This course will provide a working knowledge of the key parameters of modern phased array antenna systems.

Course Outline by Topical Areas:

Introductory Material: mutual impedance effects (patterns, [Z], [S], scan element pattern). Finite Arrays: architectures (elements, feed networks, bandwidth, scan, grid patterns, planar, cylindrical, conformal, using depth), multiple beam arrays (Rotman Lens, Butler matrix BFN's), phase steered arrays (quantization, beam granularity, low side lobes, random errors, subarrays). Infinite Arrays: comparison to finite arrays, parallel-plate E-plane array (Floquet modes, formulation and analysis for scan reflection coefficient, dielectric layer, dielectric plugs), planar array analysis (waveguides, dipole, patches, blindness, simulators, current sheet models, linear arrays). Signal Processing Arrays: digital beamforming (architecture, A/D, I/Q, calibration), adaptive beamforming (sidelobe blanker, covariance matrix, sidelobe canceler, jammer nulling).

Course Requirements:

Homework: Problems and exercises assigned - 30%

Examinations: One midterm (35%) and one final exam (35%)

Computer Language: Knowledge of scientific programming language (BASIC, FORTRAN, Pascal etc.)

Computer Facilities: At least one homework assignment will involve a modest programming exercise requiring access to a personal computer, work station, etc., with a scientific programming language.

Degree Applicability:

CE[AA]	CH[NA]	CS[AA]	EE[BDE]	EM[E]	ESM[NA]	MAT[NA]
MBA[NA]	ME[E]	MES[BE]	MSE[E]	SE[NA]	SY[AA]

Click here for further information on degree applicability.

NTU Semester Credit Hours: 3
Number of Lecture Hours: 36 (50 minute) lectures
Days Class Meets on Campus: Monday/Wednesday/Friday

Contributing Scholar:
Daniel H. Schaubert
Electrical and Computer Engineering Dept.
University of Massachusetts at Amherst
Amherst, MA   01003
Phone: 413-545-2530

Fax: 413-545-1227
schaubert@ecs.umass.edu

Note: Contributing Scholars are responsible for the design, organization, content, and presentation of NTU courses. Online classroom management, student management, and other matters related to academic administration of courses are the responsibility of support "Faculty". Either person is often called "Instructor". To identify and differentiate between these roles, we use the terms "Contributing Scholar" and "Faculty".

Academic/Administrative Contact:  
Ms. Barbara Barnett
Phone: 413-545-0063
Fax: 413-545-1227
bbarnett@ecs.umass.edu


Prerequisites: A good understanding of basic antenna theory and performance, and of graduate-level electromagnetics for waveguides, plane-wave spectrums, radiation, etc. These topics are contained in textbooks such as Antenna Theory, C.A. Balanis, Antenna Theory and Design, W.L. Stutzman and G.A. Thiele, Time-Harmonics Electromagnetic Fields, R.F. Harrington, and Advanced Engineering Electromagnetics, C.A. Balanis.

Textbooks: (Order Materials)

1.	Phased Array Antennas, R. C. Hansen, John Wiley and Sons, 1998, ISBN 047153076X.
2.	Course notes will be sent via PDF format to students with email access at no charge. Students without email will need to contact the VIP office to order the required notes in printed form and will be charged $25.