{"id":37190,"date":"2022-01-03T14:57:00","date_gmt":"2022-01-03T13:57:00","guid":{"rendered":"https:\/\/fhi.nl\/nieuws\/over-the-air-testen-in-opkomst\/"},"modified":"2024-07-10T13:36:00","modified_gmt":"2024-07-10T11:36:00","slug":"over-the-air-testen-in-opkomst","status":"publish","type":"news","link":"https:\/\/fhi.nl\/en\/news\/over-the-air-testen-in-opkomst\/","title":{"rendered":"Over-the-air testing on the rise"},"content":{"rendered":"
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\n\t\t\t\t\tOver-the-air testing on the rise\t\t\t\t<\/h1>\n\n\t\t\t\t
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The test and measurement industry in the Netherlands is going through a transition. More and more companies are switching to wireless testing, also known as over the air <\/em>(OTA) . \u201cThe great advantage of over the air<\/em> is that you test the device as it actually functions,\u201d says Matthijs Kronenburg of Accelonix, one of the first companies in the Netherlands to apply OTA test solutions. \u201cThis reduces the chance of errors.\u201d<\/strong><\/p>\r\n

Kronenburg gives the example of testing a new model of mobile phone. "In the test room we place a doll with the phone next to its ear. Then a robot arm turns the doll in all directions, just as it actually does when you make a phone call. By measuring the radiation pattern three-dimensionally, it is possible to determine the direction of the radiation. beam <\/em>\u201cto be determined very precisely.\u201d<\/p>\r\n

\"\"Cost-saving<\/h2>\r\n

OTA testing is particularly ideal for products where beam<\/em>formation is important. \u201cYou optimize the beam<\/em> during testing,\u201d Kronenburg explains. \u201cIn the test chamber, you determine the direction of the beams using a prototype. When the object goes into production, the beam pattern of all copies must be identical to that of the prototype. This must then be reproduced very accurately. Another efficient way is to follow a less accurate production process and measure each product separately. During this process, you immediately program the optimal configurations into the product. The latter is often cost-saving for the manufacturer.\u201d<\/p>\r\n

Easily scalable<\/h2>\r\n

The first reactions of customers on over the air <\/em>testing, are positive: \u201cIt is a practical way of testing that is easily scalable. You have test rooms of tens of square meters, but there are also 'rooms' the size of a refrigerator. This makes OTA testing attractive for companies of different sizes.\u201d<\/p>\r\n

Robot arm OTA<\/h2>\r\n

\"\"<\/h2>\r\n

Kronenburg shows a picture of a typical RF test chamber: a futuristic-looking room with pointed, anechoic material on the walls that absorbs the RF radiation. An antenna is attached to the wall, aimed at a positioner <\/em>with a robot arm in the middle of the room. The employee sits outside the test room behind a computer and follows the progress of the test via the test software using radio protocols beam-<\/em>optimization.<\/p>\r\n

Rise of 5G<\/h2>\r\n

\u201cWireless technology is not new. It has been used in the United States for years,\u201d Kronenburg explains. \u201cDutch test and measurement companies are not yet enthusiastic about wireless test technology. Due to the rise of 5G and other mobile communication methods, and the growing demand from customers, I expect that to change in the short term.\u201d<\/p>\r\n

A keeper<\/h2>\r\n

Kronenburg is ready, he says: \u201cOTA offers us the possibility to be flexible with specific aspects that are important to the customer. We can even reuse materials and instrumentation if necessary. This flexibility makes over the air <\/em>a keeper.\u201d<\/p>\t\t<\/div>\n\t<\/div>\n<\/div>\r\n\t

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