Inventor
ZHU YONGFEI
US33 patents
⚠️ This page may combine multiple inventors who share the name “ZHU YONGFEI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
PARATEK MICROWAVE INC
24 patentsUS6531936B1Mar 11, 2003
Voltage tunable varactors and tunable devices including such varactors
PARATEK MICROWAVE INC299 citations99
US6525630B1Feb 25, 2003
Microstrip tunable filters tuned by dielectric varactors
PARATEK MICROWAVE INC313 citations99
US6404614B1Jun 11, 2002
Voltage tuned dielectric varactors with bottom electrodes
PARATEK MICROWAVE INC271 citations99
US6377217B1Apr 23, 2002
Serially-fed phased array antennas with dielectric phase shifters
PARATEK MICROWAVE INC427 citations99
US6377440B1Apr 23, 2002
Dielectric varactors with offset two-layer electrodes
PARATEK MICROWAVE INC286 citations99
US6377142B1Apr 23, 2002
Voltage tunable laminated dielectric materials for microwave applications
PARATEK MICROWAVE INC278 citations99
US6727535B1Apr 27, 2004
Ferroelectric varactor with built-in DC blocks
PARATEK MICROWAVE INC84 citations98
US6686817B2Feb 3, 2004
Electronic tunable filters with dielectric varactors
PARATEK MICROWAVE INC91 citations98
US6597265B2Jul 22, 2003
Hybrid resonator microstrip line filters
PARATEK MICROWAVE INC258 citations98
US6556102B1Apr 29, 2003
RF/microwave tunable delay line
PARATEK MICROWAVE INC263 citations97
US6876279B2Apr 5, 2005
Voltage tunable laminated dielectric materials for a coplanor waveguide
PARATEK MICROWAVE INC35 citations96
US6864840B2Mar 8, 2005
Serially-fed phased array antennas with dielectric phase shifters
PARATEK MICROWAVE INC44 citations96
US6683516B2Jan 27, 2004
Voltage tunable laminated dielectric materials for microwave applications such as a tunable cavity
PARATEK MICROWAVE INC37 citations96
US6801102B2Oct 5, 2004
Tunable filters having variable bandwidth and variable delay
PARATEK MICROWAVE INC58 citations95
US6801104B2Oct 5, 2004
Electronically tunable combline filters tuned by tunable dielectric capacitors
PARATEK MICROWAVE INC81 citations94
US6903633B2Jun 7, 2005
Electronic tunable filters with dielectric varactors
PARATEK MICROWAVE INC19 citations93
US6710679B2Mar 23, 2004
Analog rat-race phase shifters tuned by dielectric varactors
PARATEK MICROWAVE INC20 citations93
US7145415B2Dec 5, 2006
Electrically tunable filters with dielectric varactors
PARATEK MICROWAVE INC39 citations92
US7034636B2Apr 25, 2006
Tunable filters having variable bandwidth and variable delay
PARATEK MICROWAVE INC20 citations92
US6794960B2Sep 21, 2004
Voltage tunable laminated dielectric materials for microwave waveguide applications
PARATEK MICROWAVE INC20 citations92
US6717491B2Apr 6, 2004
Hairpin microstrip line electrically tunable filters
PARATEK MICROWAVE INC33 citations92
US6686814B2Feb 3, 2004
Voltage tunable varactors and tunable devices including such varactors
PARATEK MICROWAVE INC24 citations92
US6683517B2Jan 27, 2004
Voltage tunable laminated dielectric materials for microwave applications such as a coaxial cable
PARATEK MICROWAVE INC20 citations92
US7154357B2Dec 26, 2006
Voltage tunable reflective coplanar phase shifters
PARATEK MICROWAVE INC3 citations63
SPEARS JOHN H
3 patentsUS8072285B2Dec 6, 2011
Methods for tuning an adaptive impedance matching network with a look-up table
SPEARS JOHN H104 citations97
US8421548B2Apr 16, 2013
Methods for tuning an adaptive impedance matching network with a look-up table
SPEARS JOHN H72 citations96
US8395459B2Mar 12, 2013
Methods for tuning an adaptive impedance matching network with a look-up table
SPEARS JOHN H6 citations82
BLACKBERRY LTD
3 patentsUS8957742B2Feb 17, 2015
Methods for tuning an adaptive impedance matching network with a look-up table
BLACKBERRY LTD59 citations95
US9698758B2Jul 4, 2017
Methods for tuning an adaptive impedance matching network with a look-up table
BLACKBERRY LTD22 citations92
US9847807B2Dec 19, 2017
Wide band antenna systems
BLACKBERRY LTD2 citations71