0
Radio waves are a form of electromagnetic radiation, and they don't require a medium to pass through (like water, sound, or seismic waves.) So they work in space, which makes it real handy for astronauts for communicate with each other.
Wiki User
∙ 11y ago
Add your answer:
Earn +20 pts
The power of the signal would be high or low if you are transmitting in omnidirection antenna as compared to directional antenna?
The power of the signal, as perceived by the receiver, will be lower with an omnidirectional antenna. This is because the omnidirectional antenna is transmitting in all directions, while the directional antenna is transmitting in only one direction.Think of the directional antenna as a lens, focusing proportionally more power in a smaller space.
Why dipole antenna not used for high frequency?
Depends on what you mean by high frequency. The rabbit ears antenna used in broadcast TV is a dipole and is used for VHF.
Effects caused by opening angle of a pyramidal horn antenna?
The opening angle of a pyramidal horn antenna is to match the impedance of the horn antenna to that of free space. With this enlargement of the dimension, the velocity of the wave travelling will decrease. This will increase the guide wavelength, which in turn increases the impedance of the horn. This gives an impedance value closer to that of free space there by giving better power transfer.
Why yagi uda antenna is used?
Some advantages of the Yagi- Uda Antenna include that this is a widely used design and low cost. The construction also is simple. Some disadvantages are that the receiver of the Yagi-Uda Antenna may have problem receiving signal.
What type of cable is used for a radio antenna?
fibre optical cable
Where helical antenna is used?
it is used in space
Cassini High-gain antenna was the contribution of?
Italian Space Agency provided the High Gain Antenna for the Cassini Space Probe. The HGA was built by Alenia Aerospazio.
How does a smart antenna work?
A smart antenna is used to identify signal signature and to track an antenna beam on the target. Some are for beamforming which is used to create the radiation pattern of the antenna.
What is the importance of antenna in a wireless communication system?
For wireless communication systems, the antenna is one of the most critical components. A good design of the antenna can relax system requirements and improve overall system performance. An antenna is the system component that is designed to radiate or receive electromagnetic waves. In other words, the antenna is the electromagnetic transducer which is used to convert, in the transmitting mode, guided waves within a transmission line to radiated free-space waves or to convert, in the receiving mode, free-space waves to guided waves.
What is antenna?
antenna maybe defined astw structure associated with the transition between guided wave and free space (or) wise versa.
What kind of antenna is used in base transceiver station?
I think Printed Antenna ( array microstrip antenna)
What is antenna role in space communication?
it receives signals and sends out signals
What are the release dates for World's Toughest Fixes - 2008 NASA Deep Space Antenna?
World's Toughest Fixes - 2008 NASA Deep Space Antenna was released on: USA: 3 May 2011
What is a car antenna booster used for?
A car antenna booster is used to 'boost' the radio waves of the car's antenna. This is usually used to improve radio quality and reduce static that might be heard.
What two functions does an antenna performs?
antenna can be used in both transmission and reception
What are the practical applications of horn antenna?
microwave. it couples the waveguide to open space.
What is an antenna?
In Electomagnetics, Radio, Electronics, etc.:An antenna is a structure that couples energy between a circuit (radio, cell phone, etc.) and free space. The plural is antennas.In Biology, Zoology, etc.:An antenna is an organ used to sense the surroundings. The plural is antennae.
