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Working Frequency Range (band Width) Of The Caravan Satellite TV Antenna Of Caravan

Edit: Dotogo Tecchnologies Co.,Ltd      Date:Jul 04, 2017

Working frequency range (band width) of the Caravan Satellite TV Antenna of caravan

Whether Caravan Satellite TV Antenna or receive Caravan Satellite TV Antenna, they are always in a certain range of frequencies (bandwidth), work in the Caravan Satellite TV Antenna bandwidth have two different definition of -- -- -- -- -- -

One kind of mean: the working band width of the Caravan Satellite TV Antenna of the caravan satellite under the conditions of SWR of the standing wave is less than or equal to 1.5.

One is the frequency band width of the Caravan Satellite TV Antenna gain of the caravans by 3 db.

In a mobile communication system, usually is defined according to the former, specifically, Caravan Satellite TV Antenna bandwidth is Caravan Satellite TV Antenna standing wave ratio SWR is less than 1.5, Caravan Satellite TV Antenna working frequency range.

Generally speaking, the performance of the Caravan Satellite TV Antenna is different in different frequency points in the working band width, but the performance degradation caused by this difference is acceptable.

One of the basic functions of launching a Caravan Satellite TV Antenna is to radiate the energy from the feeder to the surrounding space, and the basic function is to radiate most of the energy towards the desired direction. The vertical half - wave symmetrical oscillator has a vertical "bagel" - shaped stereograph (FIG. 1.3.1 a). Stereoscopic pattern stereo sense is strong, but drawing is difficult, and picture 1.3.1 picture 1.3.1 b c gives the direction of the two main plane figure, plane direction graph description Caravan Satellite TV Antenna on a given plane direction. It can be seen from figure 1.3.1 b that radiation is zero in the axial direction of the oscillator, and the maximum radiation direction is at the horizontal plane. As can be seen from figure 1.3.1 c, radiation is the same in all directions on the horizontal plane.

Caravan Satellite TV Antenna is an electronic device used to transmit or receive radio waves - or more broadly - electromagnetic waves. Caravan Satellite TV Antennas are used in radio and television, point-to-point radio communications, radar and space exploration systems. Caravan Satellite TV Antennas typically work in air and outer space, and can operate underwater, even at certain frequencies in soil and rock.

Caravan Satellite TV Antenna (English: can antenna) to be used is a kind of converter, it put the propagation of guided waves on a transmission line, into the unbounded medium (usually free) in the transmission of electromagnetic waves, or on the reverse transform. A component used in radio equipment to transmit or receive electromagnetic waves. Radio communications, radio, television, radar, navigation, electronic countermeasures, such as remote sensing, radio astronomy engineering system, all using electromagnetic waves to transmit information, rely on caravan satellite antenna to work. In addition, the non-signal energy radiation needs to be used to transmit energy by electromagnetic waves. General Caravan Satellite TV Antenna are reversible, namely the same vice Caravan Satellite TV Antenna can be used as both a Caravan Satellite TV Antenna, also can be used for receiving the Caravan Satellite TV Antenna. The same Caravan Satellite TV Antenna is the same as the basic characteristic parameters for launch or reception. This is the reciprocity theorem of the Caravan Satellite TV Antenna.

By adding additional conductor rod or coil (referred to as units) and change its length, spacing and orientation (or change the Caravan Satellite TV Antenna beam direction), can produce Caravan Satellite TV Antenna with established features, such as the eight wooden Caravan Satellite TV Antenna. "Caravan Satellite TV Antenna array" or "Caravan Satellite TV Antenna array" refers to a number of active Shared source or load to produce Caravan Satellite TV Antenna directional Caravan Satellite TV Antenna radiation pattern. The spatial relationship of the Caravan Satellite TV Antennas in caravans usually affects its orientation. "Active unit" refers to the Caravan Satellite TV Antenna unit of energy output is decided by the unit internal power source (rather than just by pass circuit of signal energy) or the unit of energy output power source controlled by signal input. The "Caravan Satellite TV Antenna introduction line" is the transmission device (such as transmission line or feeder) transmitting the signal energy between the signal source and the Caravan Satellite TV Antenna of the active caravan. It is extended by the Caravan Satellite TV Antenna of the active caravan to the source. The "caravan Caravan Satellite TV Antenna feed" refers to the elements between the Caravan Satellite TV Antenna and the amplifier.