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Ground wave, sky wave and space wave propagation
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∙ 11y ago
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What is output of not gate if sine wave is input?
Completely depends upon frequency of operation and amplitude.
How does EZ pass work?
Radio wave signal a transponder.
What wave type is used by digital communications?
In digital communications, a digit is either a one or a zero, or an "on" or an "off" signal. The wave shape that is composed of "on's and off's" is the square wave.
Why is modulation necessary in radiobroadcasting?
Modulation in radio broadcasting is important because it is necessary to adjust the carrier signal so that the information in the modulating signal can be broadcasted. You must have modulation in order to transmit thru a radio wave.
What is difference between modulated wave and carrier wave?
Carrier Wave: A carrier wave is a high-frequency electromagnetic wave that is used as the "carrier" or the base signal in a modulation process. It is typically a pure sine wave with a constant frequency and amplitude. The carrier wave by itself does not carry any information; it serves as a vehicle to carry the information from one location to another. In AM and FM radio broadcasting, the carrier wave is the primary signal transmitted by the radio station. Modulated Wave: A modulated wave is the result of combining the carrier wave with an information signal, such as an audio signal or data. Modulation is the process of varying the characteristics of the carrier wave (either its amplitude or frequency) in accordance with the information signal. There are two common types of modulation: Amplitude Modulation (AM) and Frequency Modulation (FM). In AM, the amplitude of the carrier wave is varied in proportion to the amplitude of the information signal. This variation encodes the information onto the carrier wave. In FM, the frequency of the carrier wave is varied in proportion to the amplitude of the information signal. This variation encodes the information onto the carrier wave. The modulated wave contains the information that needs to be transmitted, and it can be demodulated at the receiving end to retrieve the original information.
What is meant by modes of propagation?
Modes of Propagation = different ways to continue and/or increase the number of a given species. Example: sexual reproduction.
Which wave cannot exist inside wave guide?
TEM TE modes (Transverse Electric) have no electric field in the direction of propagation. * TM modes (Transverse Magnetic) have no magnetic field in the direction of propagation. * TEM modes (Transverse ElectroMagnetic) have no electric nor magnetic field in the direction of propagation. * Hybrid modes are those which have both electric and magnetic field components in the direction of propagation
What has the author John Griffiths written?
John Griffiths has written: 'Radio wave propagation and antennas' -- subject(s): Antennas (Electronics), Radio wave propagation
What has the author K G Budden written?
K. G. Budden has written: 'The wave-guide mode theory of wave propagation' -- subject(s): Radio waves, Wave guides 'Radio waves in the ionosphere' -- subject(s): Ionospheric radio wave propagation
Which kind of wave requires a medium for propagation?
A Sound wave, water wave, earth quake wave. Electromagnetic waves (radio, light, etc.) do not require a medium for propagation.
What are wave propagation?
Propagation of disturbance suffered by a particle in a medium is called wave propagation Wave Propagation is a term used to estimate the actions and characteristics of a wave of motion either in solids, liquids, gasses, or electrical radio type waves by the environment it is in and what factors affect those waves behaviors.
What is the space wave propagation frequency?
Space wave propagation frequency is nothing special, it is the same frequency of the wave in question, for example WLAN Wifi produces 5.2 GHz radio wave from your computer or from router, so that would be the the space wave propagation frequency in question
What has the author A G Longley written?
A. G. Longley has written: 'Radio propagation in urban areas' -- subject(s): Radio wave propagation, Metropolitan areas
What has the author Lucien Boithias written?
Lucien Boithias has written: 'Radiowave Propagation' -- subject(s): Tropospheric radio wave propagation
What is transversal waves?
Wave is a propagation of oscillations of some physical parameter (perturbation of pressure, mass density, electrical or magnetic fields...). If oscillations are perpendicular to the direction of propagation - the wave is transverse (for example - electromagnetic wave). If physical parameter oscillates along the propagation direction - the wave is longitudinal(Sound).
What has the author Ralph J Slutz written?
Ralph J Slutz has written: 'Short-term radio propagation forecasts in Southeast Asia' -- subject(s): Ionospheric forecasting, Maximum usable frequency (Radio), Ionospheric radio wave propagation
How is a radio wave different from a gamma wave?
Radio waves are lower frequency.
