lecture0826

lecture0826 - x School of Electrical and Computer...

• Notes
• 2

This preview shows pages 1–2. Sign up to view the full content.

School of Electrical and Computer Engineering, Cornell University ECE 4880: RF Systems Fall 2015 Lecture 08/26/2015 Reading Assignments: 1. Syllabus 2. ECE 3030 patch-up: Maxwell equations (Note 1 and Note 2 of ECE 3030) Lecture Flow: 1. Radio: radiation (wireless transmission) of electromagnetic energy through space Carry information through amplitude, frequency and phase modulation: The mobile revolution in the last 20 years Transmitting energy: Tesla machine, microwave heating, RFID, etc. Imaging: radar, MRI, etc Large range of control 90 dBm (TV, radar transmission) 1MW 7,000V on 50 antenna -110 dBm (GPS signal from satellite) 10fW 0.7µV on 50 antenna 2. Walk through syllabus: what the class will and will NOT cover; related courses 3. Sign up on Blackboard: course ID: 17833_2015FA 4. Background knowledge needed: R, L, C and diodes (in the level of ECE 2100): DC, AC, transient, phasor, Bode plots Transmission lines: impedance, traveling wave, phase, dispersion (in the level of ECE 3030) Signal processing: Fourier transforms, channels/filters, noises (in the level of ECE 2200)

This preview has intentionally blurred sections. Sign up to view the full version.

This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 5. Group activities: Sometime random is better: a case study of time-division multiple access Choose a random number between 1 - 4 in your heart (do not speak out loud). I will count 1…, 2…, 3…, 4… When the number matches, say your first name out loud immediately. Choose the group 2 as a demonstration: repeat the process. Observation: o Why sequential number calling is not in general possible? (Sight) o What is the probability that everyone’s name can be heard without interference? o What happens if two persons ALWAYS choose 2? o What happens if two persons ALWAYS choose 1, 2, 3, 4 as a rotating sequence? Put students to groups of 3 – 4 students o Introduce yourself: My name is Edwin Kan. I am a professor of ECE for 18 years. I like basketball (but bad) and ping pong (reasonable). 1 x o Elect a speaker o What is the coolest application (in 1 or 2 sentences) you can imagine for using radio waves? Say in a hospital, imaging the tornado, contact with aliens, etc. 2...
View Full Document

{[ snackBarMessage ]}

What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern