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Class 343/788 - Loop type


Subclass of Class 343 - Communications: radio wave antennas
Definition: Subject matter wherein the active antenna comprises a coil
No. of patents: 284
Last issue date: 05/29/2012


1                
NumberTitleIssue Date
8188933Antenna unit and mobile terminal therewith
An antenna unit includes an antenna formed on a magnetic sheet. A transmission circuit includes an inductor, a matching capacitor, and the antenna connected in series, and a reception circuit includes the antenna, the matching capacitor, a resistor, and a capacitor ...
05/29/2012
8179332Antenna coil and antenna device
An antenna device is constructed such that an antenna coil including a magnetic core and a flexible substrate is mounted to a circuit board. A first coil portion having a coil axis parallel or substantially parallel with a main surface of the magnetic core includes ...
05/15/2012
8159405Magnetic antenna and board mounted with the same
A magnetic antenna, suitable for use in an RFID tag and an RFID tag reader/writer, which operates stable even if brought close to a metallic object and suitable for mass-production, and a board mounted with the magnetic antenna. The magnetic antenna has a coil with ...
04/17/2012
8154465Portal antenna
A portal antenna (10) particularly suited for enabling low frequency RFID devices carried by animals to be read when animals are proceeding through a stock race or the like. The portal antenna includes a portal structure (11) through which an animal ca...
04/10/2012
8125401Antenna device
An antenna device having a magnetic core to be surface-mounted on a circuit substrate includes a pair of coil portions spaced apart from each other at a predetermined interval. The coil portions are connected by a connecting conductor. An end of the magnetic core in...
02/28/2012
8111205Mast clamp current probe (MCCP) insertion loss determining methods and systems
Methods and systems for determining insertion loss for a mast clamp current probe (MCCP) coupled to a monopole antenna are disclosed. An exemplary method includes determining a first power radiated by the monopole antenna across a first range of frequencies while dr...
02/07/2012
8106845Omnidirectional flat antenna and method of production
The inventive antenna comprises a planar substrate carrying as first winding whose axis is arranged in a parallel position to the plane of the substrate. Said antenna also comprises at least one second winding, whose axis is arranged in a parallel position to the pl...
01/31/2012
8094083Multi-band tree antenna
A multi-band antenna comprising a tree and a plurality of current probes coupled around the tree. Each current probe is designed to receive and transmit in a substantially different frequency band than the other current probes. The current probes are positioned on t...
01/10/2012
8077105Directive bar-type antenna
Disclosed is a directional bar-type antenna which comprising a plurality of bar-shaped antenna elements including a core and a coil wound around the core. The first bar-shaped antenna element is disposed at a position of a mirror image of the second bar-shaped anten...
12/13/2011
8077106Receiving antenna coil
The present invention provides a receiving antenna coil capable of realizing both improvement in the reception characteristic and miniaturization. In a receiving antenna coil, at least one of an X-axis winding core part and a Y-axis winding core part is formed in a ...
12/13/2011
8072387Magnetic antenna and board mounted with the same
There is provided a magnetic antenna, suitable for use in an RFID tag and an RFID tag reader/writer, which operates stable even if brought close to a metallic object and suitable for mass-production, and a board mounted with the magnetic antenna. The magnetic antenn...
12/06/2011
8063844Omnidirectional antenna system
An omnidirectional antenna system. Implementations may include an antenna having a wire loop and a single ferrite rod loop. The single ferrite rod loop may be oriented substantially parallel to a plane formed by the wire loop. The single ferrite rod loop may include...
11/22/2011
8059053Antenna and radio-wave receiving device provided with antenna
An antenna that can ensure a sufficient radio receiving level and a radio-wave receiving device on which the antenna is equipped are provided. The antenna includes a columnar magnetic core formed by a ferromagnetic body, a coil portion wound around the magnetic core...
11/15/2011
8054235Active magnetic antenna with ferrite core
An active magnetic antenna with a ferrite core having a winding is provided, forming a frame magnetic antenna which is connected with a low-noise transistor, to amplify a signal of the frame magnetic antenna. A base of the transistor is connected directly to one con...
11/08/2011
8044875Coil parts
A coil part used in a antenna coil has a cross shape core that includes: a first winding frame part extending a first direction and being provided with a coil, and a second winding frame part extending a direction crossing the first direction and being provided with...
10/25/2011
8031127Semiconductor memory module incorporating antenna
The semiconductor memory module incorporating antenna includes a wiring board (11) having a connection terminal (17) connected with a control semiconductor element (16) and arranged at a position exposed to the surface of an outer case (15
10/04/2011
7999751Magnetically coupling near-field RFID antenna
An improved magnetically coupling near-field RFID antenna is embodied as a magnetic H-field coupler, and the near-field RFID antenna is embodied as a looped and/or frame-shaped antenna. The looped and/or frame-shaped antenna comprises a looped or frame-shaped strip ...
08/16/2011
7990331Antenna coil to be mounted on a circuit board and antenna device
In an antenna coil including a first magnetic core, a second magnetic core, and a flexible board, coil conductors are provided on a surface of the flexible board. By winding the flexible board around the first magnetic core and the second magnetic core, a first coil...
08/02/2011
7903041Magnetic antenna apparatus and method for generating a magnetic field
The present invention relates to a magnetic transmit antenna apparatus comprising: a toroidal core transformer having a primary winding inductively coupled to a secondary winding supplying a low voltage and high current to a magnetic transmit antenna wherein the mag...
03/08/2011
7876281Magnetic material, magnetic sheet, and portable electronic apparatus
A magnetic material used for an antenna module of an RFID (radio frequency identification) system that uses a communication frequency of 13.56 MHz, includes an Fe alloy magnetic material containing Fe as a primary component, and Si and Al added thereto, and phosphor...
01/25/2011
7830324Electronic entity having a magnetic antenna
An electronic entity includes an electronic circuit (21) having at least one first terminal (22) and a second terminal (24) to which an antenna is connected. The antenna includes a conducting element (26) electrically connected to the fir...
11/09/2010
7825869Miniature transponders
Systems and methods are disclosed for miniature transponders having capsule enclosure housings including a magnetic antenna core, such as a ferrite core, with a shaped form to provide space for an integrated circuit also included within the capsule enclosure housing...
11/02/2010
7812777Antenna coil to be mounted on a circuit board and antenna device
In an antenna coil including a first magnetic core, a second magnetic core, and a flexible board, coil conductors are provided on a surface of the flexible board. By winding the flexible board around the first magnetic core and the second magnetic core, a first coil...
10/12/2010
7796091Three-axis antenna, antenna unit and receiving device
To attain sensitivity not deviating in any of XYZ directions. A three-axis antenna with a cross-shaped core 2 having a pair of X-axis arms 22a, 22b projecting in the X-axis direction in an orthogonal coordinate system and a pair of...
09/14/2010
7755558Antenna coil
The size of an antenna coil is reduced, and it is possible to prevent a lowering of the reception sensitivity due to a difference of the arrangement position of the antenna coil. On a winding frame of a ferrite core, a first coil and a second coil are wound in such ...
07/13/2010
7742008Multipole antennae for logging-while-drilling resistivity measurements
A multipole antenna for conducting logging-while-drilling (LWD), includes a wire for one of producing and receiving an electromagnetic field, the wire having at least one winding for providing a magnetic moment in a first portion of the antenna that is opposite to t...
06/22/2010
7737905Broadband ferrite loaded loop antenna
A ferrite-loaded broadband loop antenna having nearly comparable transmit/receive characteristics is disclosed. The antenna contains a low loss ferrite core having a width-to-height ratio of approximately 24 and a depth-to-height ratio of approximately 6, and an ant...
06/15/2010
7733283Antenna Device
An antenna device includes: a winding component having an approximately cylindrical shaped winding shaft portion and a flange portion disposed to project outside the winding shaft portion in at least one end portion of both end portions in an axial direction of the ...
06/08/2010
7724199Antenna device and radio wave controlled timepiece
An antenna device includes an antenna for receiving a time information radio wave, and an antenna support member. In the antenna, a coil is wound around a center portion of a core. In the support member, a non-magnetic portion supports two magnetic portions independ...
05/25/2010
7710341Portable electronic device
A portable electronic device includes a circuit board and an antenna coil installed on the circuit board. The antenna coil includes a magnetic core and a coil wound at either side of an unwound portion. The winding direction of the coil is changed at either side of ...
05/04/2010
7688270Near field communication antenna and mobile device
An NFC antenna (“NFC” stands for “near field communication”) includes a ferrite antenna including a primary antenna coil wound on a ferrite core of the ferrite antenna; a loop coil provided in a position where components of a magnetic flux on a non-communica...
03/30/2010
7642983High efficiency ferrite antenna system
An automatic tuning procedure can be used to allow a small, high efficiency ferrite antenna assembly to be used in various FM frequency based devices. The ferrite antenna can take the form of a rod or flat disk, for example, which can use a pick-up coil and tuning c...
01/05/2010
7592964Shielded coil for inductive wireless applications
The present invention relates to a surface mounted coil (200) for wireless communication. The coil (200) comprises a wire (202) wounded about a core (204) thereby establishing a plurality of windings and having its ends terminated on moun...
09/22/2009
7573431Broadband polarized antenna including magnetodielectric material, isoimpedance loading, and associated methods
The broadband small antenna has equal magnetic electric proportions, circular polarization, and an isoimpedance magnetodielectric (μr≡∈r) shell for controlled wave expansion. The shell is a radome without bandwidth limitation, with reflect...
08/11/2009
7557766Portable remote controller for tire status detector
A portable remote controller for a tire status detector, includes a portable casing, a transmission circuit disposed in the casing, a low-pass filter disposed at an output side of the transmission circuit for permitting a signal with a frequency of not more than the...
07/07/2009
7548213Game chip
The present invention relates to the technology of recognizing and reading each game chip although game chips are stacked. The present invention is a game chip storing data readable by a reader/writer having an antenna which emits an electromagnetic wave and availab...
06/16/2009
7545336Card type wireless device, antenna coil, and method for manufacturing communication module
An antenna coil includes: an air-core type flat coil body; and a coil support member disposed between the coil body and a substrate so that the coil body is supported on a surface of the substrate. The thickness of the coil body is smaller than a radius of a circle,...
06/09/2009
7545337Antenna arrangement for inductive power transmission and use of the antenna arrangement
An antenna arrangement for the inductive transmission of energy has magnetic cores made of a composite material with amorphous or nanocrystalline flakes and a moulded plastic material, so that the magnetic properties suitable for effective energy transmission can be...
06/09/2009
7515112Antenna device and radio wave controlled timepiece
An antenna device includes an antenna for receiving a time information radio wave, and an antenna support member. In the antenna, a coil is wound around a center portion of a core. In the support member, a non-magnetic portion supports two magnetic portions independ...
04/07/2009
7511679Antenna, and radio timepiece using the same, keyless entry system, and RFID system
A magnetic sensor-type antenna comprising a magnetic core and a coil wound around the magnetic core for receiving electromagnetic waves, which is disposed in a housing such that the end portion of the magnetic core is bent away from the housing or a metal portion of...
03/31/2009
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