MODULE ANTENNA DEVICE

摘要

A RF module having a RF antenna integrated with a RF shielding part is disclosed. The present arrangement is simultaneously presenting a unique tuning mechanism for tuning the RF antenna according to a Voltage Standing Wave Ratio (VSWR) specification to thereby tolerate bigger tolerances of the other components on the printed circuit board. Thereby more space at the PCB is also obtained as well as avoiding RF losses in transmission lines and soldering connections to an external antenna. The metallic shield (3) is produced from a single metallic sheet or a moulded metallized piece being formed to a desired shape, thereby forming an antenna radiator member integrated with the screening portion of the metallic shield, the antenna radiator member (10) extending over or resting against a supporting element (20). The VSWR of the antenna radiator member (10) will be tuned by means of a twisting, rotating or shifting of the supporting element (20), which rests on a printed circuit board (4) underlying the antenna device and carrying the electronic components of the RF module.