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Height of antenna
It is clear from this equation that if h is large, d will be large. This explains as to why the television broadcasts are made from tall antennas..
Practical Antenna Length (L)
When free space is the communication channel, antennas radiate and receiver the signal. Theory shows that the antennas operate effective only when their dimensions are of the order of the magnitude of wavelength of the signal being transmitted...
When free space is the communication channel, antennas radiate and receiver the signal. Theory shows that the antennas operate effective only when their dimensions are of the order of the magnitude of wavelength of the signal being transmitted...Jeff saw a photograph of an antenna and it measured 9 meter in length..
Jeff saw a photograph of an antenna and it measured 9 meter in length. What would be the actual length of the antenna, if the scale is 0.3 meter : 4 meter? => 120 meters or 121 meters or 119 meters or None of the above..
Name any two segments in the figure which intersect CD.
Name any two segments in the figure which intersect CD. => HD and GC or AB and EF or GH and AB or EF and GH..
Radio Horizon
The radio horizon for space waves is about four-thirds as far as the optical horizon. This beneficial effect is caused by the varying density of the atmosphere, and because of diffraction around the curvature of the Earth. The radio horizon of an antenna is given, with good approximation,..
The radio horizon for space waves is about four-thirds as far as the optical horizon. This beneficial effect is caused by the varying density of the atmosphere, and because of diffraction around the curvature of the Earth. The radio horizon of an antenna is given, with good approximation,..Question 9
Question: What appalling reality did Ch-tsal wake up to on the nineteenth day, Earth time? Answer: On the nineteenth day of his captivity, Ch-tsal saw that his jewelled feathers from his back and sides had fallen out in the night. These were his communication channels, respirators, te..
Why satellite communication is costly?
The satellite communication is costly because of the limited life of a satellite. A geosynchronous satellite using high gain antenna requires close control of both its position and altitude. The position and altitude control rockets require fuel that has to be put in once for all before ..
..General Considerations
Any tall or massive objects will obstruct space waves, since they travel close to the ground. Consequently, shadow zones and diffraction will result. This is the reason for the need in some areas for antennas higher than would be indicated by Equation (1). On the other hand, some areas re..
Peripheral Nervous System
The peripheral nervous system consists of the nerves originating from the ganglia of the nerve ring and the ventral nerve cord. Nerves originating from the supra-oesophageal ganglion- optic (to the compound eyes), antennary (to the antenna) and the labro-frontal (to the labrum and the sym..
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