IPC Definitions - January 01, 2012
H04W 16/28 - Definition
This group covers:
The service area is defined by a focused beam in a desired generally variable direction of transmission or reception, e.g. electric antenna tilting or beam forming.
Attention is drawn to the following places, which may be of interest for search:
Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an aerial or aerial system | H01Q 3/00 |