TRANSMISSION

Description

H04B covers the technical systems and methods for transmitting signals, data, and information through various communication media and channels. This subclass encompasses transmission techniques across multiple frequency ranges, including radio transmission, wire-based transmission, optical transmission, and hybrid systems. It includes aspects such as signal modulation, amplification, filtering, impedance matching, and transmission line design, as well as technologies for managing bandwidth, noise, and signal quality. Adjacent classes address reception techniques (H04B15), specific communication protocols and applications (H04L-H04W), and individual component design.

14 direct subcodes

Child Classifications

Navigate with arrow keys, Enter to open

H04B 1/00 Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
H04B 10/00 Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
H04B 11/00 Transmission systems employing ultrasonic, sonic or infrasonic waves
H04B 13/00 Transmission systems characterised by the medium used for transmission, not provided for in groups H04B3/00 - H04B11/00
H04B 14/00 Transmission systems not characterised by the medium used for transmission (details thereof H04B1/00)
H04B 15/00 Suppression or limitation of noise or interference (by means associated with receiver H04B1/10)
H04B 17/00 Monitoring; Testing (of line transmission systems H04B3/46; arrangements for monitoring or testing transmission systems employing electromagnetic waves other than radio waves H04B10/07)
H04B 2201/00 Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
H04B 2203/00 Indexing scheme relating to line transmission systems
H04B 2210/00 Indexing scheme relating to optical transmission systems
H04B 2215/00 Reducing interference at the transmission system level
H04B 3/00 Line transmission systems (combined with near-field transmission systems H04B5/00)
H04B 5/00 Near-field transmission systems, e.g. inductive or capacitive transmission systems
H04B 7/00 Radio transmission systems, i.e. using radiation field (H04B10/00, H04B15/00 take precedence)