Antennas

Antennas for Wireless Internet Networks

Antennas are a necessary part that is required by any radio transmitter or radio receiver for coupling its electrical connection to the electromagnetic field. Signals like radio signals, satellite signals, or microwave signals can be transmitted through this telecommunication or radio equipment.

Choosing the correct antenna is one of the toughest jobs when designing a wireless system. One must know about the frequencies that are well-suited with the wireless system. A wireless system must be professionally designed and deployed for success.

They are typically the most significant part of a wireless Internet link or wireless system due to numerous factors:

1. Adding antenna gain improves the link in two directions, transmit and receive while adding radio power only helps in the transmit direction.

2. Using the narrowest antenna beam-width will reduce noise on a wireless link. For example, a sector is almost always a better choice than an Omni antenna.

3. The larger an antenna, the more gain it will produce and the more directional it will be.

Terminologies and Definitions

Omnidirectional Vs Directional Antennas

Omnidirectional antennas behave similarly to a light bulb and directional antennas perform similar to a flashlight. An Omni transmits a signal 360 degrees while directional antennas focus the signal in the direction it is aimed at.

What is dBi?

This term defines how long the specific signal will travel. The upper the dBi, the greater the range will be covered by the signal. The dBi is used to specify antenna power gain. It is referenced to the 100% efficient isotropic radiator case or "deciBels above isotropic reference”.

Does Antenna Transmit or Receive?

Both. Antennas are designed in such a way that they can receive the data and also send the data.

Wireless and Wi-Fi

Here are some more important information about wireless and Wi-Fi antennas:

dBd, also used to reference antenna gain, refers to deciBels above dipole. A 100% efficient isotropic radiator consists of a point source (radio) with power equally spread in all directions with perfect efficiency (all the power at the input of the antenna is radiated out equally).

As dBi (antenna gain) is increased, the unit area becomes smaller, effectively concentrating the same amount of radiated power.

Directivity is great for outdoor wireless because it increases gain and “filters” noise.

Directivity depends on the effective surface area of the antenna. The larger the area, the more potential directivity.

Directivity of an antenna and its efficiency determine its gain.

Achieving antenna gain involves additive phasing of electrical waves. Antenna arrays and aperture reflectors are often used as a way to achieve this.

How ISP Supplies can help you to buy the best antennas accessories or kit?

ISP Supplies can completely help you to buy antennas because we are certified Jirous, RadioWaves, Ubiquiti, KP Performance, Multiwave, SIAE, and Cambium Networks antenna distributors, deals with all types of antennas including 11 GHz antennas, 18 GHz antennas, 80GHz, 900MHz, etc. Not only this, we also offer the best GPS antennas, GSM/Cellular antennas, TVWS, and Multi-Band Antennas.

We also deal with all kinds of omnidirectional antenna, sector antenna, directional, integrated, panel, and dish antennas. We don't just sell but also install all types of antennas for our valuable customers that's why our customers trust us and feel secure with us.

WISPs, TV operators, and local industries look to ISP Supplies as a solution provider, they believe we will provide the best antenna accessories, kit, and equipment of the best antenna manufacturer brands at the best and the cheapest price.

Yes, ISP Supplies does this magic, we provide the complete antenna tools and equipment on your door or come by and shop for the equipment you want or consult with our well-informed staff.

Have more questions about antennas? Attend one of our training seminars and learn more or call our knowledgeable sales staff at 855-WISP-PRO.