ECE 222A - Antennas and their System Applications

ECE 222A – Fall 2009

Antennas and their System Applications

Latest Announcements

9-29: Sample final exams are posted.

9-30: Homework 1 is posted.

10-02: Matlab can be accessed from the library or the computer labs at EBU-1.

10-05: If you need access to Matlab, please stop by ECEHELP on the second floor and pick up the media. We only have a couple DVDs available so you’ll need to reserve in advance by sending an email to ecehelp@ece.ucsd.edu. The software can be used off-campus with a VPN connection. The computer needs to be networked to access campus license servers.

10-06: Update on Matlab access: The only "deal" on Matlab that can be installed on student owned computers is as described at http://www.mathworks.com/academia/student_version/. Available at the bookstore is the basic student Matlab (About $100 + additional toolboxes).

10-06: No class on Tuesday October 13, 2009. Make up class on Monday October 19 at 3:30-5pm. Same room.

10-06: Matlab codes for plotting 2D radial pattern (with negative Rho values) are posted. A Matlab routine for plotting 2D radial pattern is also posted.

10-07: The announcement on Matlab access dated 10-06 has been edited.

10-09: Solutions for Homework 1 is posted.

10-12: Homework 2 will be posted tomorrow.

10-13: Homework 2 is posted. You can do Problem 3 after the Monday lecture.

10-15: From the ECE Coordinator: We tried another round of requests for a room change but we were denied. We’ll move tables into the room today.

10-18: Reminder: Make up class on Monday October 19 at 3:30-5pm. Same room.

10-22: Some Matlab codes and an example on 2D normalized pattern polar plots in dB scale, is posted.

10-22: Solutions for Homework 2 is posted.

10-24: Homework 3 is posted. Please note the due date.

10-24: Example on a planar 2-D microstrip array is posted.

10-25: There will not be a lecture on Monday October 26.

10-27: Midterm moved to Nov. 5 at 11-12:30pm, Room 4309.

10-27: Homework 3 is due on Tuesday Nov. 3 in class.

10-29: Helical problem is due with Homework 3.

10-29: We will have a lecture on Monday November 2 at 4-5:20pm.

11-04: Solutions for Homework 3 is posted.

11-04: The last page in the Solutions for Homework 3 has an error. The corrected plots is posted.

11-10: Homework 4 is posted.

11-10: Solutions for midterm is posted.

11-15: Papers on Multiband Antennas is posted. Please print Lecture 14, Small Antenna papers, Miniature PIFA papers, and Multiband Antenna papers.

11-16: The 2nd page in the Solutions for midterm has an error (for last part of Problem 1). The corrected solution is posted.

11-18: Homework 4 now due on Tuesday November 24, 2009.

Course Information

Instructor: Prof. Gabriel M. Rebeiz

EBU-1; Room 5608 Tel: 858-534-8001

rebeiz@ece.ucsd.edu

Office Hours: Prof. Rebeiz office hours are in 5608 EBU-1

Office Hours 1:30-3pm Tuesdays and Thursdays

TA: Kevin Ho (kmh001@ucsd.edu)

TA Office Hours Monday and Wednesday at 2:30 to 4pm in 5706 EBU-1

Lectures: Tuesdays and Thursdays 11:00am-12:20pm Center 206 (Currently in EBU-1 4309)

Lecture Notes: Download on this website. Lecture notes are required.

Textbook: Not required.

Other books: Antenna Theory and Design, Balanis, Wiley 2005.

Antenna Theory and Design, Stutzman and Thiele, Wiley

Antennas and RadioWave Propagation, Collin, McGraw Hill

Antennas for All Applications, Kraus and Marhefka, McGraw Hill

Software: It is expected that you know Matlab or Mathmatica or Maple, etc.

Homework: About 6-7 homeworks will be assigned.

Homework is due at the beginning of the lecture (not at the end).

Homework solutions will be posted about 12 hours after the due date.

Late homeworks will not be accepted except by permission from Rebeiz

Grading: 15% Homework

35% Midterm Tuesday November 3 at 11-12:30 pm – Room TBD

50% Final Exam Wednesday December 9 at 11:30 -2:30 pm – Room TBD

All exams are open notes and open books. Bring your class notes and any cheat-sheets that you wish to write, and any book that you wish. However, I do not recommend that you bring books with you. You will not use them.

Prerequisites:

Decent Math background in differential equations and complex numbers

Undergraduate EM (Physics and ECE 107)

Knowledge of Maxwell Equations and Basic Waves.

Review material:

Review Maxwell’s Equations and a Wave Chapter in any available undergraduate textbook.

Thoughts for the homework:

The homework will be graded very generally. That is, we will assign 10, 8, 6, 4, 2, and 0 as grades with the following guidelines: 10 (Well done to mostly done), 6 (about half of it is done), and 0 (not much is done or homework not given). Late homework are not allowed unless by permission from instructor by email.

Course Outline

222A Antennas and Their System Applications

(Prerequisites: None, except a standard EM sequence at the undergraduate level. Communications people should be encouraged to take this course.)

- Introduction to Antennas: Gain, Directivity, Solid-Angle, Impedance, Polarization, etc.

- Friis Transmission and Radar Equations: Some System Examples

- Review of Maxwell’s Equations, Reciprocity (important to antennas)

- Plane waves, Polarization, Wave Impedance, Poynting Vector

- Radiation and Free-Space Green’s function, Vector and Scalar Potentials

- Dipoles and Loops, Impedance of dipoles and loops

- Ground planes and Image Theory (introduce a bit arrays using image theory)

- Traveling-Wave Antennas (radio amateur antennas and near-horizon communications)

- Array Theory and Phased Arrays: Use signal processing techniques to analyze arrays (gain, tapered distribution, amplitude and phase error effects, 1-D and 2-D arrays, etc.)

- Mutual Impedance in Arrays: The emf method. Not a lot of coverage, but enough to understand it.

- Classic Antennas: Dual-Dipole over a ground plane (symmetric pattern, array theory), Dipole backed by a corner reflector (array theory), Yagi-Uda (mutual coupling effect), Log Periodic (endfire feeding), Helical antennas (traveling waves on a circle and end-fire feeding arrangement), Spiral antennas (wideband self-mapping), Inverted F-Antennas (cell phones), antennas for circular polarization (other than the helical antenna)

- Equivalence Principle and Slot Antennas (do not cover cavity backed slots)

- Microstrip Antennas: The two-slot model (do not cover cavity model), Microstrip antenna arrays.

- Miniature Antennas (Cell phone applications)

- System level applications of antennas (MIMO, Multi-Beam, Phased Arrays, etc.)

Lectures