File:Superturnstile Tx Muehlacker.JPG
Summary
<a href="https://en.wikipedia.org/wiki/Superturnstile_antenna" class="extiw" title="en:Superturnstile antenna">Superturnstile antenna</a> on the Muehlacker television transmitter, Germany. Also called a "batwing antenna", this is a common type of television transmitting antenna. Opposing pairs of "wings" function as a <a href="https://en.wikipedia.org/wiki/dipole_antenna" class="extiw" title="en:dipole antenna">dipole antenna</a>, with each pair of crossed dipoles fed 90° out of phase to create an <a href="https://en.wikipedia.org/wiki/Omnidirectional_antenna" class="extiw" title="w:Omnidirectional antenna">omnidirectional</a> radiation pattern. Each radiator unit consisting of two pairs of batwings is called a "bay". The vertical collinear stack of batwing "bays" increases the gain of the antenna, concentrating the radiation in the horizontal direction so little of the power is radiated into the sky or down into the ground and wasted. The advantage of the "batwing" design is that it has a wide <a href="https://en.wikipedia.org/wiki/bandwidth" class="extiw" title="en:bandwidth">bandwidth</a> so one antenna design can cover a large part of the VHF television band, and can be used to transmit multiple channels if desired.
Licensing
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 06:13, 6 January 2017 | | 641 × 1,023 (70 KB) | 127.0.0.1 (talk) | <a href="https://en.wikipedia.org/wiki/Superturnstile_antenna" class="extiw" title="en:Superturnstile antenna">Superturnstile antenna</a> on the Muehlacker television transmitter, Germany. Also called a "batwing antenna", this is a common type of television transmitting antenna. Opposing pairs of "wings" function as a <a href="https://en.wikipedia.org/wiki/dipole_antenna" class="extiw" title="en:dipole antenna">dipole antenna</a>, with each pair of crossed dipoles fed 90° out of phase to create an <a href="https://en.wikipedia.org/wiki/Omnidirectional_antenna" class="extiw" title="w:Omnidirectional antenna">omnidirectional</a> radiation pattern. Each radiator unit consisting of two pairs of batwings is called a "bay". The vertical collinear stack of batwing "bays" increases the gain of the antenna, concentrating the radiation in the horizontal direction so little of the power is radiated into the sky or down into the ground and wasted. The advantage of the "batwing" design is that it has a wide <a href="https://en.wikipedia.org/wiki/bandwidth" class="extiw" title="en:bandwidth">bandwidth</a> so one antenna design can cover a large part of the VHF television band, and can be used to transmit multiple channels if desired. |
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