Guide and radiate electromagnetic energy at microwave frequencies.
Waveguides are hollow metallic tubes carrying microwaves with cut-off frequencies for each mode (TE, TM). Antennas radiate with gain, directivity and patterns; dipole length λ/2. Friis equation P_r=P_tG_tG_r(λ/4πd)². Arrays steer beams electronically.
A satellite dish has gain proportional to (πD/λ)².
Waveguides and antennas control microwave and radio energy, so they determine range, coverage and efficiency in communication systems.
Guide and radiate electromagnetic energy at microwave frequencies.
Waveguides and antennas control microwave and radio energy, so they determine range, coverage and efficiency in communication systems.
A hollow metal structure that guides electromagnetic waves, with a cutoff frequency below which waves do not propagate.
The ratio of power radiated in a given direction to that of an isotropic reference antenna, usually given in dBi.
Typical applications include choosing a waveguide size for a radar transmitter band, designing a dipole antenna for a local radio link and selecting an antenna gain to meet the link budget for a satellite connection.
Study "Smith chart" first (topic 96 of 106 in Electrical Engineering). It covers the groundwork this topic builds on.
Effective aperture. Bandwidth and polarisation. Impedance matching to feed line.
A satellite dish has gain proportional to (πD/λ)².
The next topic is "Electromagnetic compatibility", which builds directly on this one.
It is classed as Advanced in Electrical Engineering (topic 97 of 106). It is an advanced topic. It assumes you are comfortable with the intermediate topics in Electrical Engineering.
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