What are patch antenna used for?
The patch antenna is mainly practical at microwave frequencies, at which wavelengths are short enough that the patches are conveniently small. It is widely used in portable wireless devices because of the ease of fabricating it on printed circuit boards.
What is basic antenna principle?
How does an antenna work? The antenna at the transmitter generates the radio wave. The voltage across the antenna elements and the current through them create the electric and magnetic waves, respectively. At the receiver, the electromagnetic wave passing over the antenna induces a small voltage.
Who invented patch antenna?
Robert E Munson
Just stumbled up on the news that Robert E Munson (“Bob Munson”) passed away on August 31, 2015. He is the inventor of what is popularly known as “microstrip patch” antenna.
What are the basics of a patch antenna?
The basics of operation is to generate a magnetic field out of phase with an electric field with a ratio that impedance matches with the air (377 Ohms). At the bottom of this tutorial are three links to antenna basics and more detail on patch antenna theory. In this part of the workshop you will design a microstrip patch antenna.
How does the microstrip patch antenna radiate radiation?
Note that the fringing fields near the surface of the patch antenna are both in the +y direction. Hence, the fringing E-fields on the edge of the microstrip antenna add up in phase and produce the radiation of the microstrip antenna.
Where does the input impedance start on a patch antenna?
The input impedance starts at Rin-patch and goes towards zero. This is a good method for tuning after you run your simulation. The imaginary part of the impedance will be determined by the patch and the size of the gap – you can play around with sizing to see if you can zero it out!
Is the rectangular patch antenna used in PIFAs?
The rectangular patch antenna is analyzed, and what is learned here will be applied to understanding PIFAs (Planar Inverted-F Antennas) . Microstrip or patch antennas are becoming increasingly useful because they can be printed directly onto a circuit board.