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What is the value of radiation resistance of half wavelength dipole antenna?
36 ohm
What is umbrella pattern antenna?
maa chuda
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.
What is passive antenna?
A passive antenna is an antenna that is not powered by an amplifier.
End fire antenna?
end-fire antenna = surface-wave antenna
What is the Radiation pattern of loop antenna?
cardioids
What is Power Radiation Pattern?
The power radiation pattern represents how the radiated power from an antenna is distributed in space. It shows the strength of the radiated power in different directions relative to the antenna. This pattern helps to understand how an antenna radiates energy and is important in designing and evaluating antenna performance.
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.
Difference between isotropic antenna and omnidirectional antenna?
The isotropicantenna by definition has a radiation pattern that is a perfect sphere. The omni driectional antenna is characterized by a radiation pattern resembling a doughnut.
What is difference between horizontal and vertical plane pattern in antenna?
The horizontal plane pattern of an antenna describes its radiation characteristics when viewed from above, displaying how the antenna radiates signal in the horizontal plane around it. In contrast, the vertical plane pattern depicts the antenna's radiation characteristics when viewed from the side, showing how it radiates signal up and down. These patterns are crucial for understanding an antenna's coverage and performance in different environments, influencing its application in communication systems.
Advantages of omni directional antenna?
can transmit in all directions with a donut shaped radiation pattern.
What is Radiation pattern of have wave dipole is?
In open space, infinitely far from material objects, the radiation pattern of a half-wave dipole is a torus (donut), with the radiator (wire) passing straight through the center of the hole. The field strength is maximum in all directions perpendicular to the wire, and zero in the directions off the ends of the wire. The peak field strength is +2.2 dB relative to isotropic.
Is an asymmetrical polar?
An asymmetrical polar diagram is a graphical representation of an antenna's radiation pattern that shows variations in signal strength with direction. It can be used to analyze the directionality and coverage of an antenna.
Does the dipole antenna have the same response in all direction in the azimuth plane?
No, a dipole antenna does not have the same response in all directions in the azimuth plane. It typically exhibits a figure-eight radiation pattern, with maximum radiation occurring in directions perpendicular to the antenna and minimal radiation along its axis. This means that the gain varies depending on the direction of the received signal within the azimuth plane.
What is radiation pattern of isotropic antenna?
By definition, an isotropic radiator radiates equally well in all directions. A simple vertical whip would have such a pattern in the horizontal field.
What is the tip of an antenna called?
The tip of an antenna is commonly referred to as the "radiating element" or "antenna tip." This part is crucial for the emission and reception of electromagnetic waves. In certain types of antennas, such as dipoles, the tips are where the current is most concentrated, playing a significant role in determining the antenna's radiation pattern and efficiency.
What can transformation can occur in a radio antenna?
The radio antenna converts electromagnetic radiation to electrical energy
