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- Beam_tilt abstract "Beam tilt is used in radio to aim the main lobe of the vertical plane radiation pattern of an antenna below (or above) the horizontal plane.The simplest way is mechanical beam tilt, where the antenna is physically mounted in such a manner as to lower the angle of the signal on one side. However, this also raises it on the other side, making it useful in only very limited situations.More common is electrical beam tilt, where the phasing between antenna elements is tweaked to make the signal go down (usually) in all directions. This is extremely useful when the antenna is at a very high point, and the edge of the signal is likely to miss the target (broadcast audience, cellphone users, etc.) entirely.With electrical tilting, front and back lobes tilt in same direction : for example, an electrical downtilt will make both front lobe and back lobe tilt down. This is the property used in the above example where the signal is pointed down in all directions. On the contrary, mechanical downtilting will make the front lobe tilt down and the back lobe tilt up. In almost all practical cases, antennas are only tilted down - though tilting up is technically possible.A vertical antenna being less visible than a mechanically tilted one, the use of purely electrical tilt with no mechanical tilt is an attractive choice for aesthetic reasons which are very important for operators seeking acceptance of integrated antennas in visible locations.In GSM and UMTS cellular networks, mechanical tilt is almost always fixed whereas electrical tilt can be controlled using remote actuators and position sensors, thus reducing operating expenses. Remote electrical tilt is abbreviated as RET and it is part of the Antenna Interface Standards Group's open specification for the control interface of antenna devices.Occasionally, the mechanical and electrical tilt will be used together for odd situations, in order to create greater beam tilt in one direction than the other, mainly to accommodate unusual terrain. Along with null fill, beam tilt is the essential parameter controlling the focus of radio communications, and together they can create almost infinite combinations of 3-D radiation patterns for any situation.".
- Beam_tilt thumbnail Sector_antenna_radiation_pattern.png?width=300.
- Beam_tilt wikiPageExternalLink www.aisg.org.uk.
- Beam_tilt wikiPageExternalLink AISG%20v2.0%20.pdf.
- Beam_tilt wikiPageID "273092".
- Beam_tilt wikiPageRevisionID "581867425".
- Beam_tilt hasPhotoCollection Beam_tilt.
- Beam_tilt subject Category:Antennas.
- Beam_tilt subject Category:Broadcast_engineering.
- Beam_tilt type Antenna102715229.
- Beam_tilt type Antennas.
- Beam_tilt type Artifact100021939.
- Beam_tilt type Device103183080.
- Beam_tilt type ElectricalDevice103269401.
- Beam_tilt type Instrumentality103575240.
- Beam_tilt type Object100002684.
- Beam_tilt type PhysicalEntity100001930.
- Beam_tilt type Whole100003553.
- Beam_tilt comment "Beam tilt is used in radio to aim the main lobe of the vertical plane radiation pattern of an antenna below (or above) the horizontal plane.The simplest way is mechanical beam tilt, where the antenna is physically mounted in such a manner as to lower the angle of the signal on one side.".
- Beam_tilt label "Beam tilt".
- Beam_tilt sameAs m.01n_p0.
- Beam_tilt sameAs Q4876193.
- Beam_tilt sameAs Q4876193.
- Beam_tilt sameAs Beam_tilt.
- Beam_tilt wasDerivedFrom Beam_tilt?oldid=581867425.
- Beam_tilt depiction Sector_antenna_radiation_pattern.png.
- Beam_tilt isPrimaryTopicOf Beam_tilt.
