200px, A schematic drawing of a Gizmotchy antenna
A Gizmotchy is an
antenna developed in the early 1960s for
citizens band
Citizens band radio (also known as CB radio), used in many countries, is a land mobile radio system, a system allowing short-distance person-to-many persons bidirectional voice communication among individuals, using two way radios operating on ...
radio by the
Utica Radio Corporation. In the mid-1960s the patent was acquired by the
Charles Radio Company and the antenna is now marketed as the Charles Gizmotchy.
gizmotchy.com history of the Gizmotchy antenna.
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The Gizmotchy is a variation of the Yagi Yagi may refer to:
Places
*Yagi, Kyoto, in Japan
* Yagi (Kashihara), in Nara Prefecture, Japan
*Yagi-nishiguchi Station, in Kashihara, Nara, Japan
* Kami-Yagi Station, a JR-West Kabe Line station located in 3-chōme, Yagi, Asaminami-ku, Hiroshima, ...
. Each element consists of three rods arranged 120 degrees apart in an inverted "Y" configuration. The driven element is essentially a three-part dipole
In physics, a dipole () is an electromagnetic phenomenon which occurs in two ways:
*An electric dipole deals with the separation of the positive and negative electric charges found in any electromagnetic system. A simple example of this system ...
. One of these rods is the vertical driven rod, and one is the horizontal driven rod. The third rod is what would be the other half of a regular dipole and points downward 120 degrees from vertical on the opposite side of the support pole from the downward-pointing driven rod. The other elements are parasitic radiators like those of a Yagi except consisting of inverted "Y"s.
Like the Yagi, the Gizmotchy is a directional antenna with a forward gain of approximately 12 dBi and a front-to-back ratio of 28 dB. The unique design of the Gizmotchy allows both vertical or horizontal polarization, through the use of separate gamma matches and transmission lines.
See also
* Antenna (radio)
In radio engineering, an antenna or aerial is the interface between radio waves propagating through space and electric currents moving in metal conductors, used with a transmitter or receiver (radio), receiver. In Transmission (telecommunicati ...
* Yagi antenna Yagi may refer to:
Places
* Yagi, Kyoto, in Japan
* Yagi (Kashihara), in Nara Prefecture, Japan
* Yagi-nishiguchi Station, in Kashihara, Nara, Japan
* Kami-Yagi Station, a JR-West Kabe Line station located in 3-chōme, Yagi, Asaminami-ku, Hiroshima ...
* Turnstile antenna
A turnstile antenna, or crossed-dipole antenna, is a radio antenna consisting of a set of two identical dipole antennas mounted at right angles to each other and fed in phase quadrature; the two currents applied to the dipoles are 90° out of ph ...
References
{{Antenna Types
Radio frequency antenna types
Antennas (radio)
Citizens band radio
