Now it's clear what a "big" antenna is - it's a small (usually caseless) antenna assembled together with a groundplane in a large housing. As you can see, there's a caseless TW2405 antenna and a board that works as a groundplane. In fact, the picture shows not just a big antenna, but also a smart antenna, meaning there is a receiver and processor on the backside of the board. See the photo."
- Big antennas are ready-to-use devices, they are used independently, as the character Carlson, who lived where the antennas are, would say.
- Small antennas are designed to be used with an external groundplane, for example, any antenna will show its maximum performance right on a car roof.
- The smallest antennas are either antennas for drones, where low weight is essential, or antennas for less accurate autonomous solutions, where half of the day, the accuracy (CEP-50) is less than 3 meters, and the other half, even larger (up to 9 meters).
- As for caseless antennas, they are semi-finished products for making big antennas or embedding them in devices.
- Regarding the shape of antennas - it's just a matter of design and... mounting. Square, round, octagonal - all of this is not important. What matters is that the antenna is easy to attach. An antenna torn off by the wind and left hanging by its cable is a heartbreaking sight.
© Eltehs SIA 2023
