So the fundamental frequency is the frequency being transmitted? And the Harmonics frequency are the unwanted frequencies? So the person transmitting on a frequency say example 35MHz is the fundamental frequency. And the other frequencies above that are the Harmonics frequencies?
Can some one explain this quote better?Quote Harmonics are defined as an unwanted higher frequency that is multiple of the fundamental frequency. Harmonics create a distortion in the fundamental waveform. QuoteHow do you know what the harmonics frequencies are?
qrk2021-03-22T19:01:55Z
Sounds like is came from a lame electronics course handout. Harmonics are integer multiples of the fundamental frequency. However, "unwanted" should not be in the definition as harmonics are sometimes desirable. In audio systems, harmonics are generally discouraged (distortion). In some audio systems (guitar amplifiers, some hi-fi systems) odd-order harmonics are desirable. Radio transmitters, harmonics are not wanted at the antenna terminals, but may be desirable in earlier stages. In digital systems, you want lots of harmonics (square wave).
harmonica create distortian , sound and radio signals are not a pure signal but made up or varies signals . harmonicas are made by this , best is sound signals , ,.05% distortian is better than 1% distortian .
A Harmonic is a third and fourth frequency generated as a result of two primary frequencies. If you take an antenna and generate a frequency of 1000hz on it. Then take a second generator and produce a second frequency of 710hz on the antenna, at the same time, it will radiate: 1000hz, 710hz, 1710hz and 290Hz. This is the sum of the two primaries and the difference of them. The 1710hz and 290hz are Harmonics of the two primaries.
harmonics are multiplies of the fundamental. Harmonics of 35 MHz are 70, 105, 140, 175 MHz, etc.
they create distortion in that the resultant of including harmonics is a distorted sine wave, whereas fundamental only is a pure sine wave. reference has some examples.
Basically any periodic waveform, for exam[le a square wave, can be represented as the fundamental plus any number of harmonics added to it. Look up "Fourier series" for more info on this.