Radio transmission systems, i.e. using radiation field

Introduced: September 1968

Last revised: January 2006

Classification Context

Section:: ELECTRICITY
Class:: ELECTRIC COMMUNICATION TECHNIQUE
Subclass:: TRANSMISSION

Scope Notes

Limiting references: Near-field transmission systems, e.g. inductive or capacitive transmission systems Transmission systems employing beams of corpuscular radiation, or electromagnetic waves other than radio waves, e.g. light, infra-red Suppression or limitation of noise or interference

7 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 systems, i.e. transmission or reception using multiple antennas
H04B 7/14 Relay systems
H04B 7/22 Scatter propagation systems
H04B 7/24 for communication between two or more posts