What are Biconical Antennas?

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- everything RF

Jul 26, 2017

Biconical antennas (also known as Bowtie or Butterfly antennas) are broadband dipole antennas that are made up of two roughly conical conductive objects, nearly touching at their points. These antennas have dipole like characteristics, with a wider bandwidth achieved due to the double cone elements structure.

Bio-Conical antennas have an omni-directional radiation pattern in the H-plane similar to a dipole antenna. A coaxial feed is connected to the center of the antenna (where the two cones meet). The antenna can be mounted or dismounted very easily with perfect contact repeatability because of the clamping fixtures.

Bioconical antennas can be used in a number of applications, typical applications include emission testing, immunity testing and measurement of shielding effectiveness. These antennas have replaced half-wave dipoles as biconical antennas allow continuous sweeps, which makes the discovery of anomalies at a site much easier.

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