Components

Question 1

Transmitter?

Answer 1

The transmitter is the initial component of the wireless medium. The computer hands the data off to the transmitter, and it is the transmitter’s job to begin the RF communication. When the transmitter receives data, it then generates the AC current to start
this transmission. The transmitter determines the power to be used.

Question 2

Functions of Antenna ?

Answer 2

Connected to the transmitter, it collects the AC signal that it receives and directs, or radiates, the RF waves away from the antenna in a pattern specific to the antenna type. Often called an isotropic radiator (IR).

When connected to the receiver, the antenna takes the RF waves that it receives through the
air and directs the AC signal to the receiver. The receiver converts the AC signal to bits and
bytes.

Question 3

How to increase power in Antenna ?

Answer 3

1. To generate more power at the transmitter

2. To direct, or focus, the RF signal that is radiating from the antenna.

Question 4

Receiver ?

Answer 4

The receiver is the final component in the wireless medium. The receiver takes the
carrier signal that is received from the antenna and translates the modulated signals into 1s
and 0s.

Question 5

Intentional / Isotropic Radiator (IR) ?

Answer 5

Specifically designed to generate RF, as opposed to something that generates RF as a by-product of its main function.

Question 6

How is IR measured ?

Answer 6

It is typically measured in milliwatts (mW) or decibels relative to 1 milliwatt (dBm)

Question 7

Equivalent Isotropic Radiator Power (EIRP) ?

Answer 7

EIRP is the highest RF signal strength that is

transmitted from a particular antenna.