IPC Subgroup
H01Q 25/04 Multimode antennas
Introduced: January 1980
Last revised: January 2006
Full Title
Antennas or antenna systems providing at least two radiating patterns > Multimode antennas
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC ELEMENTS
- Subclass:
- ANTENNAS, i.e. RADIO AERIALS