Microwave Repeaters

Front

What is a repeater in telecommunications?

Back

A repeater is an electronic device that receives a signal and retransmits it to extend transmissions over longer distances or to overcome obstructions.

Front

What is the function of a radio repeater?

Back

A radio repeater extends the range of coverage of a radio signal by receiving and amplifying the signal, then retransmitting it, often on another frequency.

Front

What is a passive repeater?

Back

A passive repeater is a microwave relay that consists of a flat metal surface to reflect microwave beams in another direction, used to transmit signals over hills and mountains without amplification.

Front

What is the gain of a passive antenna?

Back

The gain of a passive antenna is due to its ability to intercept and redirect microwave radio signals, calculated based on its surface area and effective area.

Front

What does Net Path Loss (NPL) represent?

Back

NPL represents the total loss of signal strength in a communication path, calculated using the gains and losses of antennas and the path.

Front

What is a microwave relay?

Back

A microwave relay is a point-to-point telecommunications link that uses microwave receivers and transmitters to transmit information over line-of-sight distances.

Front

What are the two types of active microwave repeaters?

Back

The two types of active microwave repeaters are Baseband Repeaters and IF Repeaters (Heterodyne Repeaters).

Front

How does a Baseband Repeater work?

Back

A Baseband Repeater down-converts the received RF carrier to an IF frequency, amplifies and filters it, then reconfigures the baseband signal for retransmission.

Front

What is the purpose of diversity operation in microwave communication?

Back

Diversity operation reduces signal fades, improves equipment reliability, and enhances the signal-to-noise ratio.

Front

What is frequency diversity?

Back

Frequency diversity involves transmitting a signal using several frequency channels to mitigate the effects of frequency-selective fading.