What is a whip antenna?

Whip antenna is the most common example of a monopol radio antenna. Technically, this means that instead of two antennas working together, whether side by side or form a loop, one antenna is replaced. Bičas antennas are often used in devices such as hand radios and mobile phones. Their name is derived from a flexible, whip movement, which shows when affected.

The length of the whip determines its potential wavelength. It is also possible to shorten the whip with the loading coil anywhere along the length of the antenna. This allows for an increase in inductance without enlargement of the whip. Blob with half -life and a quarter of waves are also very common. Because they radiate in all directions on a horizontal plane, whips are often referred to as omniiform. However, this is not strictly true, because all whip antennas have a conical blind spot directly above them.

Although usually considered a form of monopol antenna, the whip antenna is actually only a monopoly if the vehicle on which it is mounted is significantly larger than itselfý whip. If the antenna and a vehicle are similar in size, an asymmetric dipole is formed. The operation of the multiple zone is possible if the inductor coil is placed either halfway along the length of the antenna or one third and two -thirds of the way.

For the use of a whip antenna there are several assets and benefits. One example is electric and mechanical simplicity. There is no need for small to installation and it is relatively easy to operate. However, because they lack a stable electric ground system, the whips antennas are somewhat ineffective. In addition, it often collapses or telescope, so the antenna is easy to move and store when it is not used.

Also, any whip directly associated with the transmitter emits radiofrequency energy into the surrounding environment. This may be a reason for concern, especially in cases concerning mobile phones and hand -held radios where the hands and head of the user are subjected to powerful electromagnetic fields.These fields are also known to cause electronic equipment failure, including medical equipment.

When dealing with wireless communication with high performance or long range, an outdoor antenna with a well -treated and stable feed tends to work much better than a whip antenna. The use of the outdoor antenna also removes a certain risk of exposing a high level of electromagnetic energy, mainly because the antenna itself is located at a safe distance from people and other electronic devices.