What antenna type is a sector antenna?

What antenna type is a sector antenna?

directional microwave antenna
A sector antenna is a type of directional microwave antenna with a sector-shaped radiation pattern. The word “sector” is used in the geometric sense; some portion of the circumference of a circle measured in degrees of arc.

What is the purpose of sector antenna?

Sector antennas are used extensively for cellular communication. The largest use of these antennas is for cell phone base-station sites. The coverage area of sector antennas is determined by the projection of the radiation pattern on the ground, which can be adjusted by changing the down-tilt angle of the antenna.

What is sectored directional antenna?

Just as the name suggests, omni-directional antennas transmit and receive uniform signals in a 360 degree pattern. The radiation pattern of an omni resembles a donut, with reduced coverage immediately below and above the antenna, and expanded coverage as you move further away from the antenna.

What is sector in tower?

A “cell sector” refers to a specific sector emanating from a cell tower. The number of sectors around a cell tower may vary by cellular provider but typically involve three separate 120-degree, pie-shaped arcs connected to form a circle of 360-degree coverage around the cell tower.

What type of antenna is used in cell phone towers?

There are two major types of antenna used in cell tower based on functionality viz. omnidirectional and directional.

What is the difference between sector and cell?

By definition, a cell site gives radio coverage to a cell. The cell site is a location or a point; the cell is a wide geographical area. Rather than referring to a “three-sectored cell,” it is more appropriate to refer to the three “cells” associated with a single base station, and as it happens, each is a sector.

Where directional antennas are useful?

Cellular repeaters often make use of external directional antennas to give a far greater signal than can be obtained on a standard cell phone. Satellite television receivers usually use parabolic antennas. For long and medium wavelength frequencies, tower arrays are used in most cases as directional antennas.

What is use of directional antenna?

Directional antennas pull in signals better from one direction. In this direction, they can detect a weaker or more distant signal than an equivalent omnidirectional antenna. The trade-off is that they do this by decreasing their ability to pull in signals from other directions.

What is a LTE sector?

In an LTE cellular network an LTE base station (eNodeB) traditionally uses three sectors and three antennas. An azimuth plane coverage angle of 120 degrees provides sector coverage in the azimuth plane using the main antenna lobe. An elevation plane coverage angle provides coverage in the elevation plane.

How many sectors does a cell tower have?

three sectors
Most cell towers are configured to have three sectors. What this means is that a cell tower can have one radio antenna that covers a 360° range or the tower can have two or more radio antennas that cover some portion of the 360° circle.

What’s the difference between antenna and tower?

Antenna can be fixed on top of a tower not the other way round. Antenna is an aerial while tower is a structure which may support the antenna or electrical wires or even support a bridge.

Which is the best description of a sector antenna?

A sector antenna is almost always categorized by its azimuth plane 3-dB beam width. They are commonly available with 60 degree, 90 degree, and 120-degree directionality. Sectors are usually deployed higher up in the air and the height of deployment helps select the required antenna, as this impacts the gain and range of the antenna.

When to use sector antennas in a wisp?

WISPs commonly use sector antennas for point-to-multipoint base station applications. They are much better suited for dense environments where subscriber counts are higher. KP offers sector antennas in the following bands:

What is the beamwidth of a three sector antenna?

According to the radiation patterns depicted, typical antennas used in a three-sector base station have 66° of horizontal beamwidth. This means that the signal strength at the ±33° directions is half (3 dB down) from its peak value at the center.

What are the features of the Airmax sector antenna?

The innovative airMAX ® Sector Antennas feature carrier-class construction and 2×2, dual-polarity performance. Highly resistant to noise interference, the airMAX ® Sector Antennas provide superior gain and beam performance for high-capacity, multipoint networks.