fresnel zone sentence in Hindi
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- For establishing Fresnel zones, first determine the RF Line of Sight ( RF LoS ), which in simple terms is a straight line between the transmitting and receiving antennas.
- When the terrain is hilly, the maximum distance can vary from as little as to due to encroachment of intermediate objects into the wide center fresnel zone of the signal.
- It has been shown that graphene lenses effectively concentrate light of ? = 850 nm onto a single point 120 um away from the Fresnel zone plate8 ( figure 5 ).
- Fresnel zones, used to analyze wave propagation and interference in space, are a series of concentric prolate spheroids with principal axes aligned along the direct line-of-sight between a transmitter and a receiver.
- A "'Fresnel zone "'( ), named for physicist Augustin-Jean Fresnel, is one of a series of concentric prolate ellipsoidal regions of space between and around a transmitting antenna and a receiving antenna system.
- Unlike traditional reflector and lens antennas, however, the focusing effect in a Fresnel zone antenna is achieved by controlling the phase shifting property of the surface and allows for flat or arbitrary antenna shapes.
- When used at millimetre wave frequencies, a Fresnel zone antenna can be an integrated with the millimetre-wave monolithic integrated circuit ( MMIC ) and thus becomes even more competitive than a printed antenna array.
- Numerous examples can be made regarding the different regions of the Fresnel zone and whether the obstacles providing bounce are sides of buildings ( vertical ), or streets / flat roofs ( horizontal ).
- Laser broadband would connect the GBS to the network, which could then provide a large area of coverage because of its wider line of sight over the curvature of the Earth and unimpeded Fresnel zone.
- The cross sectional radius of each Fresnel zone is the longest at the midpoint of the RF LoS, For practical applications, it is often useful to know the maximum radius of the first Fresnel zone.
- Originally from amateur radio, the phrase was used to describe the way an capture threshold of a moving receiver or transmitter as it passes through fresnel zones, thus chopping the speech of the transmitting operator.
- The cross sectional radius of each Fresnel zone is the longest at the midpoint of the RF LoS, For practical applications, it is often useful to know the maximum radius of the first Fresnel zone.
- XM-1 held the world record in spatial resolution with Fresnel zone plates down to 15 nm and is able to combine high spatial resolution with a sub-100ps time resolution to study e . g . ultrafast spin dynamics.
- By considering the perpendicular distance from the hole in a barrier screen to a nearby detection screen along with the wavelength of the incident light, it is possible to compute a number of regions called half-period elements or Fresnel zones.
- Y . J . Guo, I . H . Sassi and S . K . Barton, Multilayer Offset Fresnel Zone Plate Reflector , IEEE Microwave and Guided Wave Letters, vol . 4, no . 6, June 1994, pp . 196 198.
- Contributions from the parts of the edge whose radius has been increased by the corrugation to about the width of the adjacent Fresnel zone now destructively interfere with those contributions from the parts which have not been affected by the corrugation.
- To increase the efficiency of Fresnel zoneplate antennas, one can divide each Fresnel zone into several sub-zones, such as quarter-wave sub-zones, and provide an appropriate phase shift in each of them, thus resulting in a sub-zone phase correcting zoneplate [ 5 ].
- Customers of the system receive service through subscriber modules ( SM ) aimed towards the AP . The SMs should be mounted on the highest point of a building to get a reliable connection; otherwise, Fresnel zone obstruction will weaken the signal.
- If the signal is circular polarized, the Fresnel zone will have no effect, because a deflected circular polarized signal changes rotation upon deflection and the result is to become completely invisible to the receiver, regardless of whether is arrives in phase or out of phase.
- If the diameter of the circular hole in the screen is sufficient to expose the first or central Fresnel zone, the amplitude of light at the center of the detection screen will be double what it would be if the detection screen were not obstructed.
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