Azimuth chart

Elevation chart

Represents a change of 5 dB

Measurement from the centre, or strongest point, of the antenna signal to each of the points along the horizontal and vertical axes where the signal decreases by half power

Radiate in all directions

Patch, Panel, Yagi are ______ types of antenna

Can be used effectively in libraries, warehouses, and retail stores with long aisles of shelves

Have a horizontal beamwidth of 180 degrees or less, a minimal amount of signal will radiate outside of the building

Used for short to medium distance point to point connections of up to about 3.2kms

Strictly for point to point communications (typically between buildings)

Types of Highly directional antennas:

Special type of high-gain, semi-directional antenna that provides a pie-shaped coverage pattern

A group of two or more antennas that are integrated together to provide coverage

Method of concentrating RF energy

Beamforming using directional antennas to provide a fixed radiation pattern

Focuses RF energy in a direction in a particular shape

Uses an adaptive antenna array that manoeuvres the beam in the direction of the receiver dynamically

Transmits multiple phase-shifted signals with the hope and intention that they will arrive in-phase at the location where the transmitter believes that the receiver is located

Use _________ channel-sounding process to optimize the phase differentials between the transmit chains

Requires feedback from the stations in order to determine the amount of phase-shift required for each signal

Defined in 802.11ac equiring the use of channel measurement frames and both the transmitter and receiver to support beamforming

When light travels from one point to another it travels across what is perceived to be an unobstructed straight line which is known as ____________________

Has no bearing on whether or not a RF transition will be successful or not

RF Line of Sight is also referred to as ________

Imaginary, elongated, football-shaped area that surrounds the path of the visual LOS between two point-to-point antennas.

If the _______ Fresnel Zone becomes obstructed it will have a negative influence on the RF Communications

Two or more antennas with a receiver functioning together to minimize the negative effects of multipath.

Measurement of the change in impedance to the AC Signal