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semanticscholar.org
- When the antenna length matches the wavelength (or an appropriate fraction), the signal resonates, improving the antenna’s efficiency. A mismatched antenna causes signal loss and reflects energy back into the transmitter, reducing the system’s performance.
www.onesdr.com/antenna-length-vs-frequency/Antenna Length vs Frequency – Understanding the Relationship
Dec 6, 2020 · The fact that the length of an antenna is of similar size to the wavelength of light is a coincidence due to the similarity of the speed of light in air and the speed of light in the antenna (which are usually copper wires).
To summarize: the two lengths are similar not because the extent of the wave in free space maps somehow to the extent of the wire despite being at right angles, but rather because there are two wave phenomena of the same frequency and almost the same propagation speed.
Nov 7, 2016 · To make the antenna efficient at radiating energy into space (or receiving energy from space), the key trick is to make use of standing waves. The shortest standing wave you can get is at half the wavelength, and relatively easy to feed in the center of the dipole.
The length of the antenna is directly related to the wavelength of the working frequency. When buying, we may find that the antenna does not seem to be that long. Straighten the inner circle of wire, the length is also close to a quarter of the wavelength.
May 17, 2018 · We often refer to antenna size relative to wavelength. For example: a 1/2 wave dipole is approximately half a wavelength long. Wavelength is the distance a radio wave travels during one cycle. Why is antenna length measured in terms of wavelength? Wavelength is not even a universal unit or SI unit.
Aug 17, 2023 · The length of the antenna is determined by how high the frequency is compared to the wavelength. There’s an inversely proportional relationship to the frequency and a directly proportional relationship to the wavelength which determines effective length.
