Narrowband (narrow bandwidth) refers to a signal signal loss narrowband vhf broadband narrowband advanced mobile phone service narrowband time spent online page viewed which occupies only a small amount of space on the radio spectrum -- the opposite of broadband or wideband.
This is entirely relative to what is being narrowband and broadband narrowband broadband described; for example, an FM broadcast station takes up 150~200kHz on the FM narrowband r/c radio band, whereas a TV station's audio is narrowband, taking narrowband audio filter up only 25kHz, and weatheradio narrowband uvb broadcasts are wideband versus narrowband even narrower than that. It is narrowband introduction to vhf narrowband fm also very often used to describe radio antennas, called narrowband when they are designed specifically for one frequency or channel only instead of a wide range.
Narrowband can also be used with the audio spectrum to describe narrowband filters sounds which occupy a narrow range of frequencies. In telephony narrowband is usually considered to cover frequencies 300-3400Hz.
In the study of wireless channels, narrowband transport canada 'narrowband' implies that the channel narrowband under consideration is sufficiently difference between narrowband broadband narrow that the fading across narrowband vs broadband it is flat (i.e. constant). It is usually used as an narrowband uvb narrowband v broadband phototherapy idealizing assumption; no channel has perfectly flat fading, but the analysis of many aspects narrowband phototherapy narrowband ultra narrowband filters isdn digital section narrowband pager of wireless systems is greatly simplified if flat fading can be assumed.
Electronics Topics
The field of electronics is the study and use of systems that operate by controlling the flow of electrons or other electrically charged particles in devices such as thermionic valves and semiconductors. The design and construction of electronic circuits to solve practical problems is part of the fields of electronic engineering, and the hardware design side of computer engineering. The study of new semiconductor devices and their technology is sometimes considered as a branch of physics.
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