L01_Introduction_Sp11

# L01_Introduction_Sp11 - EEL 4422 EEL 6427 RF Microwave...

This preview shows pages 1–8. Sign up to view the full content.

EEL 4422 / EEL 6427 RF & Microwave Circuits II Lecture #1 troduction to Introduction to RF & Microwave Circuits II 1

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

View Full Document
Brief History of High Frequency Circuit Design Fundamentals of Electrodynamics (up to Heinrich Hertz) ilbert 600): Book e Magnete Gilbert (1600): Book De Magnete Franklin (1750): Electric charges Coulomb (1785): Forces of electric charges olta 800) Batter electric c rrent Volta (1800): Battery, electric current Oersted (1819): Current induces magnetic field Ampère (1820): Magnetic coil Ohm (1821): Current and voltage proportional 2
William Gilbert (ca. 1600) roposed earth had its own Proposed earth had its own magnetic field, it was a giant magnet Improved the idea that there was a giant mountain in the north that attracted compass needles! His book entitled De Magnete , London, 1600, became the standard work 3

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

View Full Document
Benjamin Franklin (1706 – 1790) Suspected that lightening was an lectrical current electrical current To prove, he used a kite to bring a metal key near the lightening He also developed many of the terms we still use today: battery, conductor, condenser, charge, discharge, uncharged, negative, minus, plus, electric shock, nd electrician and electrician. Electric charges (1750) 4
Charles Augustin de Coulomb (1736 – 1806) Electric Point Charges: Law f attraction and repulsion of attraction and repulsion Distribution of electricity on surface of charged bodies Electrostatics 5

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

View Full Document
Alessandro Volta (1745 – 1827) Developed electric battery that provided DC energy to the first circuits The unit of electromotive force- the driving force that moves the electric current- is now called the "volt." Battery and Electric Current 6
Hans Christian Oersted (1777 – 1851) Discovered a fundamental connection between electricity and magnetism current induces magnetic field Boosted electrodynamics research: urrent magnetic field force motion 7 Current magnetic field force motion

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

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

{[ snackBarMessage ]}

### Page1 / 24

L01_Introduction_Sp11 - EEL 4422 EEL 6427 RF Microwave...

This preview shows document pages 1 - 8. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online