QUICK-CONNECT ADAPTER FOR HANDSET CONDUCTIVE MEASUREMENTS
Original Publication Date: 1995-Mar-01
Included in the Prior Art Database: 2002-Mar-14
The transceiver performance of personal com- munications devices with integral antenna must be accurately measured as an assembled product to ensure adherence to published specifications. Although the performance may be characterized quite well on an open area test site, this method is not practical for routine measurements. As an alter- native to the open area test site, factory end-of-line and other bench level testing has, in many cases, been done with a radiation fixture designed to cou- ple the input/output of the handset antenna to a fixed transmit/receive antenna located in the tix- ture. Users ofsimple radiation fixtures are cautioned as to the accuracy of this method. It is very difficult to achieve an accuracy of better than 3 dB. In order to calibrate a radiation fixture, the radiated output level of the device under test must be known. This is a serious limitation because it implies that the unit under test must first be characterized on an open area test site, in an anechoic chamber or in a GTEM cell.