c=wavelength*frequency
f=c/λ
half the wavelength of the lowest frequency
It depends on the frequency, not the type of modulation. However, in view of the wavelength of medium waveband transmissions and h.f. transmissions the antennas are always horizontal and therefore so is the polarisation.
Yes.
In the context of fractional wavelength antennas, the principle of equilibrium is not ignored but rather redefined. The antennas are designed to operate efficiently at specific harmonic frequencies, where the electric and magnetic fields are balanced within the antenna structure, even though the physical length may be a fraction of the full wavelength. Therefore, although the physical size may not reflect the full wavelength, the principle of equilibrium is still maintained at the operating frequency of the antenna.
The relationship between antenna length and frequency is that shorter antennas are more effective at receiving and transmitting higher frequency signals, while longer antennas are better for lower frequency signals. This is because the length of the antenna needs to be proportional to the wavelength of the signal for optimal reception and transmission.
For horizontal antennas operating below 30 MHz the optimum height is half a wavelength, so the height in metres would be 149.9/Frequency in MHz.
The length of an antenna is based on what frequency it is designed to send or receive. The higher the freq. the shorter the antenna. For instance, cell phone antennas are very short while AM radio antennas are long. CB antennas are 18 feet long but there are many exceptions where people have tried to design shorter versions that will still work well.
Wilson's Antennas company offers the highest performing CB Antennas to customers. This includes Base Load Antennas, Trucker Antennas and Fiberglass Antennas.
no,they do not have any antennas
Dipole antennas and monopole antennas are examples of antennas that are essentially a length of wire or metal. These antennas are simple in design and are effective for various communication applications.
Yes.Every insect does have antennas.
frequency