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RF Reverberation Chamber

RF Reverberation Chamber- We are leading rf chamber manufacturer in India.

    A RF Reverberation Chamber, sometimes referred to as a mode tune / mode stirring chamber, is a shielded enclosure or resonance cavity for RF testing. We are rf chamber manufacturer in India. This cell is a statistically isotropic, random polarity, with RF uniformity within specified limits. Typically, a RF Reverberation chamber consists of a paddle (or tuner) that stabilizes the field, randomizing the boundary conditions. There are two types of Reverberation test methods. "Mode tuned" refers to when the paddle is moved to a position and then the RF is applied for a sufficient period of time for the equipment to exercise. In the Ecotone, the tuner can be run by a computer-controlled stepper motor that also drives RF generation and monitoring equipment. The second type is "mode stir", when the paddle is applied for a full paddle revolution with constant RF energy. The paddle speed is varied to meet the specific requirements of the device under test. In both methods, a full turn of the paddle applies RF energy to all sides of the device in one pass. This greatly simplifies the process compared to direct illumination testing.

      What are the benefits to RF Reverberation Chamber Testing?

        The benefits of recycled testing are many. RF chamber manufacture by us can be applied to all exposed sides of the device under test during a complete 360 ​​° turn of the pad, rather than a single side. For direct illumination testing, several standards require that all apertures of DUT be illuminated. It can also be difficult - impossible on complex objects. The required window impact test when applying direct illumination is not necessary during reverb testing because the field intensity is constantly changing. Test iteration is much easier to achieve in a reverb chamber with appropriate procedures, and running the test is much less complex than a single aspect angle test. Antenna distance, target (focus), 3DB beam width, location of field probe, EUT layout, and EUT location in amount of work are all less than a factor in iteration of the test.

      When is a RF Reverberation chamber used?

        RF Reverberation chambers are useful for radiation sensitivity, radiated emissions (total radiation power), shielding effectiveness, and many other troubleshooting scenarios for equipment used in the aerospace, defense and automotive sectors. In SAE ARP 5583 the reverb test method is called the preferred method, stating that reverb method testing is the recommended and preferred method to show compliance for large and / or complex level A (flight critical) systems.

        FAA, AEROCAE, RTCA, and major airframe manufacturers (i.e., Boeing, Airbus, etc. .) are "preferred" over the anechoic Chamber, due to time and cost savings, as well as the robustness of the reverb test method. Direct illumination technique.

        You should know if the reverberation test is right for your program. Reverb chambers are random in polarity, which makes it challenging to determine the directivity of RF energy. Testing multiple field levels on a system, such as outside the pressure vessel level and inside the pressure vessel level, can be difficult; All appliances in the chamber are in contact with the same area. Pulse width has limitations due to the large amount of stored energy in the high Q (efficient) chamber. If you have small, simple instruments, single aspect angle tests can be fast and sufficient for test coverage. There are ways to compensate for each, and an Ecotone engineer can help with the suggestion or assist you with a test plan.

        Both direct illumination and Reverberation test methods are acceptable routes for authentication. They both have advantages and drawbacks that each champion as a testing method. Fortunately, Ecotone is leading rf chamber manufacturer in India and has the ability to test in both methods and engineering expertise to support its path to certification.

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