IPC Subgroup
H01Q 19/28 using a secondary device in the form of two or more substantially straight conductive elements
Introduced: September 1968
Last revised: January 2006
Full Title
Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic > using a secondary device in the form of two or more substantially straight conductive elements
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC ELEMENTS
- Subclass:
- ANTENNAS, i.e. RADIO AERIALS
2 direct subcodes
Child Classifications
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- H01Q 19/3 the primary active element being centre-fed and substantially straight, e.g. Yagi antenna
- H01Q 19/32 the primary active element being end-fed and elongated