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David lopez
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if you fed a rectangular waves to a radio antenna, would it still produce radio waves? does it have to be a sine wave?
Of course, it would produce radio waves but true broad-spectrum mess. Square wave can be simply turned into decent sine wave by inserting a loading coil between output of generator and an antenna.David lopez said:if you fed a rectangular waves to a radio antenna, would it still produce radio waves? does it have to be a sine wave?
A single square wave contains several sine waves of different frequencies and amplitudes. It would be possible to tune to anyone of those and tune out the others (although not completely). The amount of power lost by tuning out the other frequencies depends on the response of the filter to the other frequencies.zoki85 said:Of course, it would produce radio waves but true broad-spectrum mess. Square wave can be simply turned into decent sine wave by inserting a loading coil between output of generator and an antenna.
The principle is same as in this video. This would make antenna more or less electrically short though.
It also depends on the frequency of square wave. For example if that frequncy is 3x higher than quarter wave resonant frequency system with loading coil, than the response of the system to the 3rd harmonic is particularly strongFactChecker said:A single square wave contains several sine waves of different frequencies and amplitudes. It would be possible to tune to anyone of those and tune out the others (although not completely). The amount of power lost by tuning out the other frequencies depends on the response of the filter to the other frequencies.
An antenna produces harmonics through a process called nonlinear distortion. This occurs when the antenna is subjected to high frequency signals, causing the antenna to vibrate and produce multiple frequencies.
Harmonics play a crucial role in antenna design as they determine the bandwidth and efficiency of the antenna. By understanding the harmonics produced by an antenna, scientists can optimize its design for better performance.
Harmonics can cause interference in the transmission and reception of signals. This is because the harmonics produced by the antenna can overlap with the desired frequency, resulting in distortion or attenuation of the signal.
Yes, harmonics can be controlled or eliminated in antenna design by using filters and tuning circuits. These components can help to suppress unwanted harmonics and improve the overall performance of the antenna.
No, harmonics can be desirable in certain cases, such as in frequency multiplication or frequency mixing applications. In these cases, the harmonics are intentionally produced and used for specific purposes.