Inventor
ZHANG YUNCHI
US16 patents
⚠️ This page may combine multiple inventors who share the name “ZHANG YUNCHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RADIO FREQUENCY SYSTEMS INC
9 patentsUS7915978B2Mar 29, 2011
Compact tunable dual band stop filter
RADIO FREQUENCY SYSTEMS INC4 citations57
US10177431B2Jan 8, 2019
Dielectric loaded metallic resonator
RADIO FREQUENCY SYSTEMS INC0 citations50
US9843087B2Dec 12, 2017
Methods and devices for protecting antenna components from contaminants
RADIO FREQUENCY SYSTEMS INC1 citations49
US9799938B2Oct 24, 2017
Methods and devices for connecting a resonator to a filter body
RADIO FREQUENCY SYSTEMS INC0 citations49
US9742050B2Aug 22, 2017
Methods and devices for grounding deep drawn resonators
RADIO FREQUENCY SYSTEMS INC0 citations49
US9680194B2Jun 13, 2017
Orthomode transducers and methods of fabricating orthomode transducers
RADIO FREQUENCY SYSTEMS INC1 citations49
US9640853B2May 2, 2017
Methods and devices for protecting antenna components from contaminants
RADIO FREQUENCY SYSTEMS INC1 citations49
US9391581B2Jul 12, 2016
Methods and devices for protecting band rejection filters from external forces
RADIO FREQUENCY SYSTEMS INC1 citations48
US9231289B2Jan 5, 2016
Methods and devices for providing a compact resonator
RADIO FREQUENCY SYSTEMS INC0 citations48