"In order to communicate effectively, humans developed languages, signs and writing; however, communicating over long distances has always been a slow process…"
"Some African tribes still use drums to send messages across the savanna."
"On May 24th, 1844, an American artist and inventor called Samuel Morse (1791-1872) sent the first telegraph message from the Supreme Court Chamber of the U.S. Capitol Building in Washington D.C. to a receiver in Baltimore, some 65 km away."
"Thomas Doolittle developed a new process to draw strong copper wire. Because of its better electrical conductivity over iron, copper wires became the standard in telephony."
The objective of this textbook is to develop the RF circuit design
aspects in such a way that the need of transmission line principles is
made clear without adopting an electromagnetic field approach.
no EM background is necessary beyond a first year undergraduate physics
course in fields and waves as provided by most colleges and
universities. Students equipped with the knowledge of basic circuit
theory and/or an exposure to microelectronics can use this book and
cover the entire spectrum from the basic principles of transmission and
microstrip lines to the various high-frequency circuit design
the advanced students the entry into this field is often pursued
through an electromagnetic field approach, while for the technologists
the basic circuit aspect embedded in Kirchhoff's laws is the preferred
Some insects, like bees, can see light of shorter wavelengths than humans can see...This is something to Buzz about. This chart is excellent, a Pictogram. A small image with a Graphical, Complete and Concise expression of a Scientific Truth.