Exam 4: Antennas

Which of the following are among the basic categories of antenna? (Choose all that apply.)

A ____ dipole antenna produces a flatter signal than a standard dipole antenna.

The technique for combating multipath by using multiple transmit and receive antennas is sometimes called which of the following?

A _____________ is a material that allows an electrical current to flow through it.

Highly-directional antennas are generally concave dish-shaped devices.

_______________ antennas have a shorter range but do not have to be precisely aimed at the receiver.

If an antenna has a ____________ gain in one direction,it must have a decrease in the other directions.

Which type of antenna is used for long-distance point-to-point wireless links?

Antennas play a vital role in receiving signals,but no role in transmitting.

Explain polarization.

What can be done when the signal from an isotropic radiator needs to reach a specific receiver without increasing the IR power which may interfere with other antennas in different locations?

Which antenna type can be used for short to medium range outdoor applications and focuses the energy in one direction?

Low-gain antennas have a shorter range than high-gain antennas but do not have to be precisely aimed.

Which of the following are signaling processing techniques used by MIMO to create high throughput? (Choose all that apply.)

The FCC places no limits on the amount of power that can be generated by an IR.

Which is a type of amplifier that can be used to boost an RF signal?

What device might you use to decrease an RF signal to fully comply with FCC regulations regarding power output of a WLAN?

What are highly-directional antennas typically used for?

Describe the optimal location for APs using omnidirectional antennas in a WLAN.

Something that has absolute uniformity in all its characteristics in all directions is called _____________.