DIFF Subgroup
H01Q 5/20 characterised by the operating wavebands
Introduced: January 2015
Full Title
Full titles differ between systems:
IPC:
Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements > characterised by the operating wavebands
CPC:
Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements (combinations of separate active antenna units operating in different wavebands and connected to a common feeder system H01Q21/30) > characterised by the operating wavebands
IPC and CPC are identically structured here. All 3 subcodes exist in both systems.
IPC defines codes here since 2015.
Child Classifications
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- H01Q 5/22 RF wavebands combined with non-RF wavebands, e.g. infrared or optical since 2015 IPC+CPC Available in IPC and CPC
- H01Q 5/25 Ultra-wideband [UWB] systems, e.g. multiple resonance systems; Pulse systems since 2015 IPC+CPC Available in IPC and CPC
- H01Q 5/28 Arrangements for establishing polarisation or beam width over two or more different wavebands since 2015 IPC+CPC Available in IPC and CPC