Optical transmission hardware integration one-stop service provider
Views: 144 Author: Site Editor Publish Time: 2021-06-06 Origin: Site
The antenna is a kind of converter that transforms the guided wave propagating on the transmission line into an electromagnetic wave propagating in an unbounded medium (usually a free space), or vice versa.
There are several factors you need to consider when buying an antenna, which will find a suitable solution for your network. Otherwise, you will not be able to connect to the network correctly.
Antennas are mainly used in devices that do not have wired connections. The most common applications of antennas are Wi-Fi/WLAN networks, Internet of Things and public safety/emergency systems.
What are the common antenna types? The main types include on-board PCB antennas, SMT patch antennas, external rod antennas, and FPC antennas. Since there are many types of antennas, you need to consider the following main items before buying: the purpose of the antenna, frequency, coverage, and connector type. In addition, you need to consider whether you want to cover all places or specific locations.
The fiber patch panel, fiber adapter panel and splitter fiber optic matching different types of antennas also have different specifications and models.
Specifically, the distinguishing factor of the antenna is how the antenna transmits the signal. An omnidirectional antenna, that is, it shows a 360° uniform radiation on the horizontal pattern. The omnidirectional antenna is generally used in the mobile communication system with the station type of the suburban district system, and the coverage is large. Directional antennas show radiation in a certain angular range on the horizontal pattern, which is called directional. Directional antennas are generally used in urban cell-based stations in mobile communication systems, with small coverage, high user density and high frequency utilization.
Specifically, the distinguishing factor of the antenna is how the antenna transmits the signal. An omnidirectional antenna, that is, it shows a 360° uniform radiation on the horizontal pattern. The omnidirectional antenna is generally used in the mobile communication system with the station type of the suburban district system, and the coverage is large. Directional antennas show radiation in a certain angular range on the horizontal pattern, which is called directivity. In mobile communication systems, directional antennas are generally used in the urban cell system, with small coverage, high user density and high frequency utilization.
There is no difference between omnidirectional and directional, it depends on your use occasion. If you use an omnidirectional antenna in a small area, you may need a single mode attenuator or a multimode attenuator later.
The 4 port fiber termination box and the 2 port fiber termination box are connected to different fiber coverage strengths and signal strengths. Which one is used depends on the application.
The frequency units of the antenna signal are megahertz (MHz) and gigahertz (GHz). The operating frequency of most antennas is 860MHz to 5.8GHz. Usually omnidirectional antennas are used for 360-degree transmission/reception, so their dBi is low. The directional antenna has a higher dBi, which can further transmit signals in the horizontal direction.
The most common connector types for Wi-Fi antennas are N series, TNC and RP-TNC, SMA and RP-SMA. In some cases, a coaxial adapter may be needed to connect the existing cable to the antenna, or to connect the cable to the antenna and the coaxial cable. These adapters include SMA 905 adapter, SMA to FC adapter and SC APC duplex adapter and so on.
If you have other antenna issues about the network, please continue to pay attention to the latest developments in the article.
