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JP4724766B2 |
A helical antenna includes a ground plate, a first helical portion spirally wound perpendicular to the plate, a second helical portion spirally wound perpendicular to the plate and surrounding the first helical portion radially outward o...
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JP4722254B2 |
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JP4717454B2 |
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JP2011130002A |
To radiate circularly polarized waves by combining a feed element and a parasitic element.The circularly polarized antenna for transmitting and receiving circularly polarized waves includes a linear feed element 1 and parasitic elements ...
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JP4711089B2 |
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JP4708114B2 |
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JP4693432B2 |
The present invention relates to a method for producing an antenna (404, 406, 408, 410) comprising a wire, made of a conductive material, whose path has a helical shape. In accordance with the invention, such a method is characterise...
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JP4688221B2 |
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JP2011097334A |
To provide an antenna device which uses a meta-material and is more compact than heretofore.The antenna device 1 is provided with: an antenna element 10 which emits or absorbs electromagnetic waves; and the meta-material 93 which has a n...
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JP4675894B2 |
The invention describes a broadband multi-dipole antenna that has low input reflection coefficient, low cross polarization, rotationally symmetric beam and constant beam width and phase center location over several octaves bandwidth. The...
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JP4666117B2 |
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JP4666116B2 |
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JP4655867B2 |
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JP4650536B2 |
An electric field coupler includes a strip-like coil formed by bending a strip-like conductor which snakes along a plane perpendicular to a coupling direction in which electric field coupling occurs, such that coil axes are perpendicular...
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JP2011049732A |
To provide a very small antenna which has high gain and high performance in comparison with the conventional ceramic chip antenna as an antenna for a one-segment cellular phone or an antenna for an in-vehicle TV, and which can be built i...
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JP2011041318A |
To provide an antenna that has a constant beam width, that is fixed in directivity and has small cross polarization.The antenna includes a plurality of electrical dipoles (1) and is capable of transmitting/receiving electromagnetic waves...
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JP4628611B2 |
An antenna of a compact size enables to raise the inductance value of the resonance section and produce high gain. The antenna A is constructed by connecting resonance sections E1 and E2 in series, in which each antenna element has an in...
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JP2011024024A |
To provide an antenna apparatus capable of obtaining non-directionality within a horizontal surface while improving a gain in an elevation angle direction.An antenna apparatus 1 comprises a plurality of cross dipole antennas (10, 20) eac...
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JP4619532B2 |
An antenna system for an electronic article surveillance system, comprising: a first, tunable transmitting loop; a second, tunable transmitting loop, the first and second transmitting loops being arranged for first and second modes of op...
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JP3165129U |
To provide a circularly polarized directional antenna which is small in size, inexpensive and has a wide directional beam width for use in a high-precision position detection system or a distance measuring device whose needs have been in...
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JP2010540900A |
An embodiment relates generally to resonant structure. The resonant structure includes a substrate and a nano-bowtie antenna deposited over the substrate. The resonant structure also includes an enclosure deposited over the substrate and...
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JP2010278522A |
To provide a log-periodic antenna which can be miniaturized and whose form is easily deformed.To a column 2 extending in an X axis direction, first-sixth elements 8-19 positioned on both sides in a Y axis direction and separated in the X...
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JP4585183B2 |
An annular antenna loop (32) is electrically coupled to a transponder (34). The antenna (32) and the transponder (34) are at least partially embedded into a non-conductive carrier strip (36) to form a ring assembly (10) to render the ant...
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JP4586028B2 |
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JP2010252188A |
To provide an array antenna device easily setting radiation coefficients of respective antenna elements and easily matching impedance.An array antenna device equipped with a plurality of antenna elements, is equipped with: a dielectric s...
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JP4546638B2 |
When a contact terminal 11 is mounted by being inserted into a bobbin 12 from the bottom end thereof, the contact terminal 11 is fixed to the bottom part of the bobbin 12 by the action of raised tabs 11c which prevents the contact termin...
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JP2010200050A |
To provide a communication device in which a helical antenna can be mounted on a substrate through a simple method.A cellular phone 1 includes the helical antenna 12 constituted of an expandable/contractible coil spring and a circuit boa...
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JP4539798B2 |
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JP4533619B2 |
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JPWO2008146932A1 |
An antenna capable of miniaturizing the outer shape while maintaining a desired level of gain for radio waves of a wide range of frequencies is provided, and the antenna is constructed by using a core 1 having a laminated structure. The ...
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JP4528155B2 |
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JP4514814B2 |
An antenna apparatus includes an antenna and support member. The antenna has a double spiral structure to include (i) an outer element, which has a spiral section prolonged spirally in an axial direction, and (ii) an inner element, which...
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JP4513939B2 |
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JP4508242B2 |
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JP2010157862A |
To obtain a communication antenna and an RFID tag at which it is easy to limit a range at which communication is possible in short-distance communication, to obtain a contactless communication device that includes the communication anten...
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JP4503903B2 |
A broad-band antenna includes in a common plane tow symmetrical parts (2,3) each including at least two interconnected conductor strands (4,5,7,8;19,20,21) powered by a double-wire line (10;22), each strand including in its portion oppos...
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JP2010154012A |
To provide an identification system for an RFID tag, capable of arranging and using the RFID tags at a narrower interval. The RFID tag identification system is provided with: a base; a helical antenna for which the spiral shaft of an ant...
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JP2010521828A |
A dielectrically loaded multifilar helical antenna having an operating frequency in excess of 200 MHz has an electrically insulative core with a relative dielectric constant greater than 5 occupying the major part of the interior volume ...
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JP4489759B2 |
A dielectrically-loaded loop antenna with a cylindrical dielectric core, a feeder structure passing axially through the core, a sleeve balun encircling one end portion of the core and helical antenna elements extending from a feed connec...
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JP4484888B2 |
A hybrid serial/parallel bus interface has a data block demultiplexing device. The data block demultiplexing device has an input configured to receive a data block and demultiplexes the data block into a plurality of nibbles. For each ni...
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JP2010130100A |
To provide a built-in multiband antenna apparatus for a portable terminal device.The multiband antenna apparatus 110 includes: a ground plate 30; and an antenna unit. The ground plate 30 includes a feed point. The antenna unit is dispose...
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JP4479519B2 |
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JP4477145B2 |
A method of manufacturing a helical antenna having a substrate (406), the method comprising providing a series of holes (2230) in the substrate (406) and positioning the substrate (406) to engage a support element (2310). The support ele...
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JP4469011B2 |
A mobile communication device has an antenna assembly comprising the combination of an inverted-F antenna and a dielectrically-loaded quadrifilar helical antenna, the latter mounted on the distal end of an elongate radiator element of th...
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JP4467642B2 |
A miniature antenna (10) for operation at frequencies in excess of 200 MHz has a ceramic core (12) in the form of a cylindrical rod having a relative dielectric constant greater than 5. Plated on the outer surfaces of the core is an ante...
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JP4462398B2 |
A bushing is provided for placement on a cable to be held between an upper cover and a lower cover of an apparatus. The bushing has a flange on an outer peripheral surface thereof, and the flange extends perpendicular to the cable on whi...
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JP2010514240A |
An antenna arrangement which includes two antennas which are resonant at a common operating frequency. The arrangement includes a circuit which combines output signals from each of the antennas to provide a combined signal output. Each a...
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JP4458218B2 |
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JP4445265B2 |
Methods, systems, and articles of manufacture consistent with certain aspects related to the present invention collect item information from RFID tags attached to items in an inventory, and uses the collected item information to perform ...
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JP4446272B2 |
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