Radio transmission systems, i.e. using radiation field (H04B10/00, H04B15/00 take precedence)

Introduced: September 1968

Title

Titles differ between systems:

IPC: Radio transmission systems, i.e. using radiation field

CPC: Radio transmission systems, i.e. using radiation field (H04B10/00, H04B15/00 take precedence)

Full titles differ between systems:

IPC:

Radio transmission systems, i.e. using radiation field

CPC:

Radio transmission systems, i.e. using radiation field (H04B10/00, H04B15/00 take precedence)

Of 8 combined children, 7 exist in both systems.

1 codes are CPC-only extensions.

2 shared codes have differing titles between IPC and CPC.

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H04B 7/002 CPC only CPC only
H04B 7/005 Control of transmission; Equalising since 1980 IPC+CPC Available in IPC and CPC
H04B 7/01 Reducing phase shift since 1980 IPC+CPC Available in IPC and CPC
H04B 7/015 Reducing echo effects since 1980 IPC+CPC Available in IPC and CPC
H04B 7/02 Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas (RAKE receivers H04B1/7115) +1 CPC IPC+CPC Available in IPC and CPC
H04B 7/14 Relay systems IPC+CPC Available in IPC and CPC
H04B 7/22 Scatter propagation systems IPC+CPC Available in IPC and CPC
H04B 7/24 for communication between two or more posts (wireless communication networks H04W) since 1974 IPC+CPC Available in IPC and CPC