CPC Main Group
H04B 7/00 Radio transmission systems, i.e. using radiation field (H04B10/00, H04B15/00 take precedence)
8 direct subcodes
Child Classifications
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- H04B 7/005 Control of transmission; Equalising
- H04B 7/01 Reducing phase shift
- H04B 7/015 Reducing echo effects
- H04B 7/02 Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas (RAKE receivers H04B1/7115)
- H04B 7/14 Relay systems
- H04B 7/22 Scatter propagation systems
- H04B 7/24 for communication between two or more posts (wireless communication networks H04W)