Transmit 5 disk12/1/2023 ![]() ![]() Discone antennas are an excellent option for any user with a need for wide bandwidth reception. The last two features make up some advantages over these types and others like omnidirectional half-wave dipole due to higher gain factor because they have more surface area when compared side by side. It also saves precious land space by being self-contained with no need for ground connection. The design makes installation easier and it does not require any external components like the monopole tower antennas do. Still, once the frequency rises above this point, it gets reasonable matching across all frequencies in the range of operation or bandwidth. It has the feed point on top of it, and at that position, current maximum issues are also found there.īelow its minimum frequency level, an RF match to 50-ohm coaxial cable becomes very bad. However, when higher frequencies are considered, there is some degradation due to multipath interference effects such as diffraction around obstacles, resulting in increased reflection of buildings.ĭiscone antenna is known as a resonant antenna. The most efficient radiation pattern occurs at low angles across an omnidirectional horizontal plane that maintains its orientation regardless of changes in frequency. In Discone operation, feeder energy meets the RF antenna, which spreads over the surface of a cone.įrom apex to base, it is possible for this radiated power to be efficiently directed towards or away from objects on Earth depending upon their distance about the height above ground level. Six disks will usually work well enough-the number isn't critical since they do not need to match anything outside their radius.īut you'll want them placed at least two feet apart from one another so as not to disturb any cones' ability to receive signals without any interference. The circular disk and cone elements sufficiently simulate the electromagnetic energy of a full-size round object, such as that which one may see on top of many buildings or atop tall towers.įor this reason, more discs make for better simulation however, there are some tradeoffs between building costs and wind resistance with too many discs close to each other. The Discone antenna is a relatively complex model, but it can be simplified into an easy-to-understand version. They're typically big and heavy, making them unsuitable for mobile or handheld devices however, their design allows them to provide good signal reception over long distances! 2. Towards the top end of its bandwidth, though, it becomes apparent that this orientation gets more and more off-axis as you get closer towards either edge but still usable nonetheless! This low-angle radiation is excellent for VHF / UHF applications since it has its most incredible sensitivity parallel or almost parallel to Earth's surface-and not at an elevated position in space like most antennas do. ![]()
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