People, even more than things, have to be restored, renewed, revived, reclaimed and redeemed. Never throw out anybody!
Some friends inquire frequently, how wireless router’s signal that does miss, cannot pass through the wall. What wireless Router signal buys to be best?
Whether actually the wireless product can realize the long-distance range signal to transmit stably, besides with agreement, wireless module and design related, antenna’s function similarly cannot neglect. Trades a high gain the antenna to trade a performance better router to be simpler than convenient, the cost is not too high, therefore is the promotion way which most is worth recommending. Certainly, this wants your router to support the dismantable antenna.but the antenna also has and the equipment (Router /AP/ network card) the compatibility.
Because the router and the network card amount of power and so on this aspect’s factor signal the building construction network environment has the relations.
Antenna’s two key parameters:
The antenna has two parameters to be essential: Gain and directivity. The gain expressed that the antenna power enlargement factor, the value bigger expression signal’s enlargement factor is bigger, i.e. works as the gain value to be bigger, the signal is stronger, the transmission quality is better. What the directivity refers to is the antenna radiation and receives whether to have the direction, namely antenna whether to come to some angle the signal is specially keen and the radiating capacity whether to concentrate in some angle.
The antenna has the different radiation or receptivity to the spatial different direction, this is antenna’s directivity. According to the directive difference, the antenna has omnidirectional and the directional two kinds, but each kind of antenna’s application domain is different, because of each has its strong points.
Omni directional antenna: The weight antenna directivity usual use directional diagram, in the horizontal plane, the radiation and the receive does not have the most general orientation the antenna to be called the omni directional antenna. Because omni directional antenna tropism with an improper method, therefore multipurpose in spot to multi-spot correspondence zone center. If builds the wireless network between the identical building or great distance very near building, is quite suitable to select increases the omni directional antenna high.
Directional antenna: Some or the many radiations and the receptivity most general orientation’s antenna is called the directional antenna. The directional antenna energy is centralized, the gain relatively omni directional antenna must be high, suits in the long-distance range point-to-point communication, because simultaneously has the directivity, antijamming ability is quite strong. If for example, an enterprise needs to surmount several buildings or the block builds the wireless network, then suits provides the high gain directional antenna.
Gain: The gain is one of antenna’s major technique targets, it is the directive coefficient and the efficiency product, is the antenna radiation or the receive electric wave size performance. Puts briefly, under the same level condition, antenna’s gain value is higher, the directivity is also bigger, the covering scope is also broader.
attention:
For the wireless signal’s expansion, some users like replacing the high gain the antenna. Because the antenna is the passive component, will not increase the power, no matter will add the big gain the antenna, it will launch the power will not be higher than 50mw, the emissive power will mainly be decided by the launch hot spot, namely
wireless router, wireless
AP itself, if the launch hot spot itself power will be small, then has traded the high gain antenna, the effect will not be obvious
.
Tags: 增益天线
Leave a Comment
