Whip Antenna


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whip antenna

[′wip an‚ten·ə]
(electromagnetism)
A flexible vertical rod antenna, used chiefly on vehicles. Also known as fishpole antenna.

Whip Antenna

 

an antenna in the form of an asymmetrical dipole made from a rigid metal rod or a large number of metal coils strung on a flexible steel line. The rigid rod may be solid or may consist of several coupled sections. In the USSR, a whip antenna made from metal coils strung on a steel line is known as a Kulikov antenna. Whip antennas made from a shaped metallic strip, a braided wire, or a metal-coated dielectric rod are used less often.

The radiation pattern of a whip antenna in the horizontal plane is circular (see Figure 2 in ANTENNA). Therefore, whip antennas are especially suited for communication between ground-based objects whose relative position changes in time, for example, between mobile radio sets in motor vehicles or tanks.

REFERENCES

See references under ANTENNA.
References in periodicals archive ?
Retention of a 3m high UHF whip antenna, and a 910mm diameter wind charger.
4 uses a whip antenna for outdoor areas, while spot and leaky antennas for indoor areas.
Yung, "FDTD analysis of a plasma whip antenna," Microwave and Optical Technology Letters, vol.
Later, we used a manpack on the floor of the truck commander's side with a long whip antenna extending out of the door.
Second, because they are externally mounted with a long whip antenna, they should transmit farther than body implants with coiled antennas (Rothmeyer et al.
The antenna efficiency was measured over whole operating bandwidth with 57 frequency points referring to a whip antenna.
In view of these circumstances, in order to characterize near ground radio link channels for WSNs in agricultural fields and gardens, Radio Frequency (RF) propagation experiments were done at ISM band 2.4 GHz utilizing RF equipments with BPSK modulated transmitted signals on omni-directional antennas and XBee-Pro ZB S2B transceiver modules with integrated whip antenna. Received Signal Strength (RSS) was observed at agricultural fields, gardens and converted into path loss values and compared with Early ITU Vegetation [15], Weissberger et al.'s and Seybold's results in [16,17] and COST 235 [18] foliage loss prediction models using Matlab simulations.
Telegent's internal antenna design delivers equivalent or better reception quality than a whip antenna in UHF and VHF bands through integration with on-chip circuitry for automated sensitivity optimisation.
This 1/2-wave dipole antenna delivers higher gain than a standard whip antenna, increasing the range and reliability of wireless links.
For example, a wireless sensor module with a 1/4-wavelength whip antenna is usually positioned with its antenna vertical.
Astron Wireless Technologies is replacing the standard whip antenna on wireless telephone terminals (wireless local loop) or data devices with a 3-dBi omni-directional dipole antenna.