EMC and antenna measurements of digital mobile telephones

Digital mobile telephones have to be tested on EMC emission and immunity. In Europe the ETSI product family standards define the test methods and limits for these measurements, Very often the manufacturer is also interested in the antenna characteristics of the mobile telephone. Therefore the question arises, how far an existing EMC test facility can be used for additional antenna measurements. A further problem is that a typical antenna measurement setup can not be used when the antenna is an integrated antenna which does not provide a defined RF interface connector. The paper describes the possible measurement methods, test setups and requirements to make antenna measurements on digital mobile telephones. It also gives some information on the extension of an existing EMC facility to an antenna measurement site and its limitations.