A Guide To Gsm Antennas Or Global System For Mobile Communication Antennas

A Guide To Gsm Antennas Or Global System For Mobile Communication Antennas

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GSM, or Global System for Mobile Communication, is a system for transmitting mobile communication information. Global System for Mobile Communications is the most common type of cellular network worldwide, and they require GSM antennas. GMS antennas are antennas that are able to transmit and receive data from one antenna to another; this might be to a personal mobile device or from one machine to another machine.

Most modern mobile phones have an internal GSM antenna, usually contained in or near the bottom of the phone. A GSM antenna also can be found in a laptop, a netbook or a Universal Serial Bus (USB) device. In these cases, the antenna is meant only for data. It usually will use 3G technology to deliver quick wireless Internet service over a GSM network.

GSM also can be used to transfer data, for use in email or Web browsing on mobile phones. Many phones have a GSM antenna that is compatible with third-generation (3G) technology for much faster speeds.

GSM uses a wide variety of antenna types. Indeed, as long as it is able to capture a GSM signal, almost any kind of antenna can potentially function as a GSM antenna. However, a few primary types of GSM antennas are in use today, and a review of these types is a good place to start in learning more about how GSM works.

GSM antennas will be either directional or omni directional. Omni directional antennas, also known as helical antennas, can receive signals from any direction. Directional antennas usually have more gain, that is, more sensitivity to signal, than omni directional antennas. Directional antennas accomplish this greater sensitivity because they are able to focus their energy patterns onto a smaller area than omni directional antennas. However, to receive signal, directional antennas must be pointed in the specific direction from which the signal is emanating.

Monopole antennas consist of a small pole placed upon a planar piece of metal or a series of wires radiated out from the pole. Monopole antennas are omni directional in nature and have equal gain in all directions.

Although most GSM/GPRS antennas are vertically polarised, a growing trend of low profile antennas are being introduced to the market. These are designed to be fitted low down on the casing and secured via a through hole bolt which passes through a hole on the enclosure. This ensures the antenna cannot be removed without access to the inside of the enclosure and no cabling is visible.

In general, GSM antennas must be small in size. Most new electronic devices are getting smaller and more compact in their designs. Therefore GSM antennas need to be small enough to be able to fit inside these devices. In addition, the antenna should have a gain of about 8 dBi. To operate at GSM antennas, the antenna must be able to receive both the standard and the extended GSM bands, 880 MHz (megahertz) to 960 MHz.

GSM service can be used on a number of radio frequencies, depending on the region and technology used. Many modern phones with GSM antennas support a variety of these frequencies so that they can be used while travelling.

All antennas need to have their performance tested. Off the shelf antennas also need to be tuned, so you also play around with matching circuits, ground plane clearance and ground length.

About the Author:
http://www.siretta.co.uk have been producing and souring antennas and cable assemblies for over 10 years. We supply Antennas and Cables globally to many of the worlds leading organisations, whether off the shelf or custom http://www.siretta.co.uk



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