U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Quotables

"During my service in the United States Congress, I took the initiative in creating the Internet."

Al Gore ; The basis for the later misquote by US Republicans that Gore had "invented" the Internet. Gore was the leading political champion of the modern-day Internet.

Newsletter  PatentStorm News

Make the Most of Our Site

See this month's Top Inventors and Most Cited Patents.

Stay on top of the latest innovations by subscribing to an RSS feed.

Registered users: Manage your profile.

 

Class 343/855 - Loop antennas


Subclass of Class 343 - Communications: radio wave antennas
Definition: Subject matter wherein the antennas are of the loop type
No. of patents: 25
Last issue date: 07/10/2007


NumberTitleIssue Date
7242359Parallel loop antennas for a mobile electronic device
A mobile electronic device, such as a smart personal object includes an antenna system for emitting and receiving signals. The antenna system includes at least two antennas electrically connected in parallel to define an equivalent circuit having a reduced inductanc...
07/10/2007
7227504Gate antenna device
A gate antenna device has a plurality of loop antennas which supplies power and transmission data to an IC-integrated medium through electromagnetic induction and acquires reception data in the form of a fluctuation of a load from the IC-integrated medium. The plura...
06/05/2007
7142164Low-loss reconfigurable reflector array antenna
A reflector array antenna is divided into independent subarrays each comprising at least two radiating elements adapted firstly to collect signals delivered by a source and having at least one chosen first polarization and secondly to send phase-shifted signals havi...
11/28/2006
6975834Multi-band wireless communication device and method
The present invention relates to a wireless communication device, such as a transponder, that has a plurality of antennas for multi-frequency usage. The wireless communication device comprises a control system, communication electronics, memory, and the aforemention...
12/13/2005
6927742Electromagnetic-induction system with optimum antenna layout and the method for forming the same
This invention utilizes the design rule with minimum path to design the antenna layout so as to reduce the across-line effect, and it also makes changes in antenna address to design the optimum antenna layout. Furthermore, the single connector is also substituted fo...
08/09/2005
6911954Method for constructing mobile wireless antenna systems
An antenna system and method for constructing said system from a plurality of antenna elements. An antenna system radiation pattern function is specified. The antenna elements are determined by measurement, simulation or calculation and parameterized according to in...
06/28/2005
6753820Communication station comprising a configuration of loosely coupled antennas
A communication station for contactless communication with suitably formed data carriers has an antenna configuration which has at least one antenna with at least one pole and at least one antenna with at least one essentially closed loop, and where the antenna with...
06/22/2004
6459588Noncontact IC card and fabrication method thereof
A noncontact IC card is provided with a card substrate 11, an IC chip 12 disposed on the card substrate 11, and a antenna circuit 13 formed on the card substrate 11 and having a pair of antenna terminals 13a and 13b, where one antenna terminal 13a is conn...
10/01/2002
6300918Conformal, low RCS, wideband, phased array antenna for satellite communications applications
A phased array antenna (12) that includes a plurality of multiple spiral arm antenna elements (10). The antenna elements (10) are hexagonal in shape and are aligned in a triangular lattice geometry, where the elements (10) are arranged in rings around a c...
10/09/2001
6054965External antenna device for short-wave receivers
An external antenna device for receiving short-wave broadcasts includes an antenna circuit section consisting of a tuner in which a loop antenna element and a variable-capacity diode are high-frequency-connected to each other in parallel, and a high-frequ...
04/25/2000
5880697Low-profile multi-band antenna
A multi-band low-profile antenna includes a conductive ground-plane element; a first radiator element mounted on the ground-plane element to define a first vertical loop; a second radiator element mounted on the ground-plane element to define a second ver...
03/09/1999
5850200Magnetic crossed-loop antenna
A novel magnetic crossed loop antenna system is provided for use with radio navigation signals, such as provided by two or more Loran-C transmitters, and in which each loop antenna is rapidly switched between the receiving channel and that of the other lo...
12/15/1998
5654724Antenna providing hemispherical omnidirectional coverage
An antenna having an omnidirectional pattern in azimuth and coverage throughout a hemisphere. The radiating elements are four half-loops mounted on a ground plane. Each half-loop is approximately one-half wavelength in length with one end grounded to the ...
08/05/1997
5592182Efficient, dual-polarization, three-dimensionally omni-directional crossed-loop antenna with a planar base element
A self-contained system containing an antenna, a circuit board, and a power source. The antenna consists of two loop elements mounted perpendicular to each other on a circular metal plate that acts both as part of the radiating system and as a shield betw...
01/07/1997
5557293Multi-loop antenna
A dual loop antenna (100) provides a dual frequency band response. The dual loop antenna (100) is configured on a substrate (102) which includes first and second radiator elements (106, 206) coupled through a common feed element (108)....
09/17/1996
5182568Loss cancellation element for an integral antenna receiver
An antenna system for a communication receiver comprising a first circuit portion located on a first circuit substrate, and a second circuit portion located on a second circuit substrate comprises an antenna which is located on the first circuit substrate...
01/26/1993
5017932Miniature antenna
A miniature antenna, in which a pair of square conductor plates disposed in parallel with a spacing sufficiently smaller than the wavelength used are fixed to each other to an insulating frame to form an antenna structure which is used also as a case. Fee...
05/21/1991
4862181Miniature integral antenna-radio apparatus
An integral portable receiver/antenna system is provided which includes an isolation coupler element exhibiting a geometry which is substantially closed upon itself and which is situated between the receiver antenna and the input of the receiver. A portio...
08/29/1989
4857852Induction well logging apparatus with transformer coupled phase sensitive detector
A well logging apparatus is disclosed which employs slot antennas having a plurality of conductive probes traversing the slot. Also disclosed are a logging apparatus having electrically isolated antenna probes and a logging apparatus with an improved mean...
08/15/1989
4821042Vehicle antenna system
The present invention provides a vehicle antenna system including high frequency pickup type antennas concealed within the vehicle body for receiving broadcast waves. The high frequency pickups are arranged on the vehicle body at locations spaced apart fr...
04/11/1989
4809009Resonant antenna
A resonant antenna suitable for transmission and for reception over a broad range of frequencies combines electric and magnetic multipoles generated by linear and loop elements respectively. The minimum requirement is one electric and one magnetic dipole ...
02/28/1989
4723127Automobile antenna system
An automobile antenna system is composed of a windshield antenna provided on a windshield of a vehicle body, and a pair of high-frequency pickups provided at a portion of a vehicle body which is remoted from the windshield, at both ends thereof. The outpu...
02/02/1988
4570164Receive antenna system in the presence of a transmitting antenna
A receiving antenna for use in proximity to an antenna having a circular radiating magnetic field includes at least one antenna having a null spatial sensitivity pattern along at least one axis, oriented with the circular radiating antenna located in said...
02/11/1986
4540988Broadband multi-element antenna
A broadband multi-element antenna is presented. The antenna comprises a monopole centrally disposed within a cavity of the body, and a plurality of antenna elements disposed at ninety degree increments about the periphery of the cavity. A plurality of iso...
09/10/1985
4012742Multimode loop antenna
A multimode loop antenna arrangement for generating various radiation/reception patterns, the loop comprises a plurality of peripheral gaps which are fed through hybrid networks or the like for the production of specialized patterns, such as cardioid, mut...
03/15/1977
 
Sign InRegister
Username  
Password   
forgot password?