a mount SO that repeat- ability is guaranteed. All antennas are measured for free space conditions as well as at different distances from the lossy cylinder using the fixture. In order to measure diversity gain, the same fixture can be used, but in this case with two dipoles mounted. As active devices, a triple-band GSM phone, a WCDMA phone, and a small active device for the 1.785-GHz band were used. The phones are standard phones equipped with special software that makes them radiate at full power. The channel can be set by using the key pad, SO the phones © 2009 by Taylor & Francis Group, LLC Measuring Performance of 3GPP LTE Terminals Figure 12.5 Test kit used in the round-robin campaign, together with suitcase used for shipping. are usable even without a base station emulator. It is therefore possible to measure them at test facilities that do not have such emulators. Both phones have an external antenna connector SO that the output power delivered directly from the transmit amplifier can be measured before and after the radiated power measurements. This is done in order to ensure that changes in battery power do not affect measured results and to ensure that nothing has happened to the phones during the course of the round robin. For both the phones and the small active device, the total radiated power is measured for free space conditions and when the phone is located in a talk posi- tion close to a head phantom. The same types of phones are used for the receiver sensitivity measurements. For this case, the phones are standard phones with the original software, and it is therefore necessary to use a base station emulator. These measurements are also done for free space conditions and for a talk position with the phone close to a head phantom. The round robin was organized in such a way that the participants would not know which organizations had already performed their measurements, in order to guarantee that no one had access to results beforehand. The participants used differ- ent measurement methods, inc