IPC Main Group
H03H 9/00 Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRONIC CIRCUITRY
- Subclass:
- IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
Related Keywords
electric filters comprising CRYSTALSelectromechanical IMPEDANCE(S)lumped impedance NETWORKS comprising electromechanical or electro-acoustic elementselectro-mechanical RESONATORS
10 direct subcodes
Child Classifications
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- H03H 9/02 Details
- H03H 9/15 Constructional features of resonators consisting of piezoelectric or electrostrictive material
- H03H 9/22 Constructional features of resonators consisting of magnetostricitve material
- H03H 9/24 Constructional features of resonators of material which is not piezoelectric, electrostrictive, or magnetostrictive
- H03H 9/25 Constructional features of resonators using surface acoustic waves
- H03H 9/3 Time-delay networks
- H03H 9/46 Filters
- H03H 9/66 Phase shifters
- H03H 9/7 Multiple-port networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common or source
- H03H 9/74 Multiple-port networks for connecting several sources or loads, working on the same frequency or frequency band, to a common load or source