Examples of RF interference

In a wireless system EMI often problems in the provision of reception quality, but caused problems in providing quality service. Typically, a wireless operator to increase or reduce the height of the tower, add or change configurations of radio in an attempt to eliminate service problems. These approaches do not work when EMI strikes. As the following three examples, well-designed shielding systems provide cost effective and sustainable solutions.

Aphone provider in the Midwest experienced a problem moving my hair. From time to time and for no apparent reason, an important cell-site would go offline. Each time he was a great battle to see a cure and at least one hour of inactivity. The crash is often annoying, and jeopardized the continuation of the overall quality of customer perception. discovered after the review of possible causes that a two-way radio repair shop was located within the same activity. A correlation wasclashes between the tests set for 47MHz State Forest and the cellular radio system. RF radio signals were strong enough for the cellular system in the knee if the overload DC Controller System. The solution was to install an RF system, shielding the room phone equipment - to completely eliminate the problem.

South-Eastern Cellular System had numerous customer complaints, frequent busy signals on a major thoroughfare.Before the cell phone manufacturers have expensive channel on perception of service application, EMI is an examination of the site. On observation, it was found that the channels of the radio panel Site status were no longer available, has shown, while a laptop technician has not been able to involve a channel. When a channel has finally been secured, three forced the others to fall. Tests have shown that EMI was in the form of some volts RF near the AM and FM stations. Ascreening system architecture was designed and installed in a fraction of the cost of the proposed channels. After the screening, false busy signals have been eliminated, were reduced dropped calls and improves customer satisfaction significantly.

A radio network in the Northeast was a problem with more sophisticated instrumentation that attributed to EMI. One survey revealed a number of high-power FM, TV and communication systems on the same hill, which were responsibleintense RF fields in the position of the cell. A corresponding effective EMI shielding system was designed and installed. Not only have problems with testing devices to disappear, but a subsequent analysis showed that mobile phone calls and blocks was decreased by 20%. Unnoticed, the EMI was also damaged cell-site controllers.