Inventor
SCHADLER JOHN L
US29 patents
⚠️ This page may combine multiple inventors who share the name “SCHADLER JOHN L”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SPX CORP
21 patentsUS8373597B2Feb 12, 2013
High-power-capable circularly polarized patch antenna apparatus and method
SPX CORP182 citations99
US6914579B2Jul 5, 2005
Apparatus and method for isolating in-channel FM antennas sharing common aperture space
SPX CORP26 citations92
US6762730B2Jul 13, 2004
Crossed bow tie slot antenna
SPX CORP30 citations92
US7839351B2Nov 23, 2010
Antenna system and method to transmit cross-polarized signals from a common radiator with low mutual coupling
SPX CORP45 citations91
US8036594B2Oct 11, 2011
Circularly polarized omnidirectional in-building signal booster apparatus and method
SPX CORP17 citations84
US7649505B2Jan 19, 2010
Circularly polarized low wind load omnidirectional antenna apparatus and method
SPX CORP9 citations84
US7339541B2Mar 4, 2008
Wideband cavity-backed antenna
SPX CORP10 citations84
US7209091B2Apr 24, 2007
Vertically polarized panel antenna system and method
SPX CORP10 citations82
US7893886B2Feb 22, 2011
Circularly polarized broadcast panel system and method using a parasitic dipole
SPX CORP6 citations74
US7327325B2Feb 5, 2008
Vertically polarized traveling wave antenna apparatus and method
SPX CORP8 citations74
US7061441B2Jun 13, 2006
Stripline fed stub-loop doublet antenna system and method
SPX CORP7 citations74
US6703984B2Mar 9, 2004
Common aperture UHF/VHF high band slotted coaxial antenna
SPX CORP12 citations74
US6677916B2Jan 13, 2004
Common aperture UHF/VHF antenna
SPX CORP12 citations73
US7034545B2Apr 25, 2006
Apparatus and method for monitoring transmission systems using off-frequency signals
SPX CORP7 citations72
US6867743B2Mar 15, 2005
Slotted antenna system and method
SPX CORP3 citations63
US6441796B1Aug 27, 2002
High power quadrapole FM ring antenna for broadband multiplexing
SPX CORP3 citations63
US7683849B2Mar 23, 2010
System and method of producing a null free oblong azimuth pattern with a vertically polarized traveling wave antenna
SPX CORP4 citations62
US7081860B2Jul 25, 2006
Folded broadcast panel antenna system and method
SPX CORP4 citations62
US7710342B2May 4, 2010
Crossed-dipole antenna for low-loss IBOC transmission from a common radiator apparatus and method
SPX CORP5 citations54
US7542004B2Jun 2, 2009
Parasitic dipole for azimuth uniformity in broadband antennas apparatus and method
SPX CORP0 citations51
US7102589B2Sep 5, 2006
Apparatus and method to increase isolation between separate in-channel antennas sharing a common aperture space
SPX CORP0 citations42
GEN SIGNAL CORP
5 patentsUS6137448AOct 24, 2000
Center FED traveling wave antenna capable of high beam tilt and null free stable elevation pattern
GEN SIGNAL CORP20 citations92
US4899165AFeb 6, 1990
Variable circular polarization antenna having parasitic Z-shaped dipole
GEN SIGNAL CORP20 citations82
US6320555B1Nov 20, 2001
Internally branch fed slotted coaxial antenna
GEN SIGNAL CORP7 citations74
US6373444B1Apr 16, 2002
Common aperture UHF/VHF high band slotted coaxial antenna
GEN SIGNAL CORP3 citations63
US4988961AJan 29, 1991
Device for achieving minimal reflections in antenna coupling
GEN SIGNAL CORP3 citations63