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Class Information
Number: 343/769
Name: Communications: radio wave antennas > Antennas > Slot type > Ring-shaped slot
Description: Subject matter wherein the aperture is shaped as a narrow annulus on a flat conducting surface or a band removed from the wall of a conducting cylinder.










Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8669904 Near-field antenna Mar. 11, 2014
8665164 Multiband handheld electronic device slot antenna Mar. 4, 2014
8542153 Slot halo antenna device Sep. 24, 2013
8519901 Slot antenna Aug. 27, 2013
8502677 Method of integrating an identification circuit into a data medium Aug. 6, 2013
8373609 Perturbed square ring slot antenna with reconfigurable polarization Feb. 12, 2013
8368596 Planar antenna for mobile satellite applications Feb. 5, 2013
8350771 Dual-band dual-orthogonal-polarization antenna element Jan. 8, 2013
RE43683 Wireless communication device and method for discs Sep. 25, 2012
8223081 Slot antenna Jul. 17, 2012
8121544 Communication system using transmit/receive slot antennas for near field electromagnetic coupling of data therebetween Feb. 21, 2012
8115694 Dual-polarized coupling device comprising annular groove fed by first and second feed conductors Feb. 14, 2012
8068063 Dual-band coupling device comprising first and second annular grooves fed by first and second feed conductors Nov. 29, 2011
8068065 Concentric ring log-periodic slot direction finding antenna Nov. 29, 2011
8049672 Ultra wideband antenna with band-notched characteristics Nov. 1, 2011
7994999 Microstrip antenna Aug. 9, 2011
7986279 Ring-slot radiator for broad-band operation Jul. 26, 2011
7907092 Antenna with one or more holes Mar. 15, 2011
7889145 Arrangement with a transponder and a metal element Feb. 15, 2011
7864126 Transmitting/receiving antenna with radiation diversity Jan. 4, 2011
7864125 Dual-band coupling device comprising first and second annular grooves being fed by first and second feed conductors Jan. 4, 2011
7737902 Diversity reception slotted flat-plate antenna Jun. 15, 2010
7667650 Planar antenna for mobile satellite applications Feb. 23, 2010
7659859 Antenna element, feed probe; dielectric spacer, antenna and method of communicating with a plurality of devices Feb. 9, 2010
7659860 Triple polarized slot antenna Feb. 9, 2010
7592963 Multi-band slot resonating ring antenna Sep. 22, 2009
7554460 Utility meter antenna for ground mounted meter boxes Jun. 30, 2009
7498988 Antenna element, feed probe; dielectric spacer, antenna and method of communicating with a plurality of devices Mar. 3, 2009
7471246 Antenna with one or more holes Dec. 30, 2008
7420518 Planar antenna with matched impedance and/or polarization Sep. 2, 2008
7382321 Broadband antenna Jun. 3, 2008
7307590 Wideband traveling wave microstrip antenna Dec. 11, 2007
7283101 Antenna element, feed probe; dielectric spacer, antenna and method of communicating with a plurality of devices Oct. 16, 2007
7265729 Microstrip antenna having embedded spiral inductor Sep. 4, 2007
7227507 Circular polarization antenna Jun. 5, 2007
7224318 Antenna apparatus and method for mounting antenna May. 29, 2007
7190310 Antenna apparatus Mar. 13, 2007
7161537 Low profile hybrid phased array antenna system configuration and element Jan. 9, 2007
7116274 Planar inverted F antenna Oct. 3, 2006
7116276 Ultra wideband internal antenna Oct. 3, 2006
7088302 Device for receiving and/or emitting electromagnetic waves with radiation diversity Aug. 8, 2006
7064724 Multiband planar antenna Jun. 20, 2006
7053847 Millimeter wave phased array systems with ring slot radiator element May. 30, 2006
7034765 Compact multiple-band antenna arrangement Apr. 25, 2006
7027001 Dual-band planar antenna Apr. 11, 2006
7019699 On-board antenna Mar. 28, 2006
6999038 Device for receiving and/or transmitting electromagnetic signals for use in the field of wireless transmissions Feb. 14, 2006
6917342 Antenna system for the transmission of electromagnetic signals Jul. 12, 2005
6914574 Multiband planar antenna Jul. 5, 2005
6897813 Combined antenna with antenna combining circularly polarized wave antenna and vertical antenna May. 24, 2005

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