using reflecting surfaces

Introduced: September 1968

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 reflecting surfaces

CPC subdivides this area 3x more granularly than IPC with 4 additional codes.

4 codes are CPC-only extensions.

2 shared codes have differing titles between IPC and CPC.

Child Classifications

Navigate with arrow keys, Enter to open

H01Q 19/102 CPC only CPC only
H01Q 19/104 CPC only CPC only
H01Q 19/106 CPC only CPC only
H01Q 19/108 CPC only CPC only
H01Q 19/12 wherein the surfaces are concave (H01Q19/18 takes precedence) IPC+CPC Available in IPC and CPC
H01Q 19/18 having two or more spaced reflecting surfaces (H01Q19/20 takes precedence) IPC+CPC Available in IPC and CPC