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JP2003521848A |
A spiral antenna which can be supplied in different modes with different transmission characteristics is described. The spiral antenna includes four approximately parallel, electrically conducting spiral arms. The spiral arms are each co...
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JP2003188633A |
To miniaturize an antenna assembly by giving a function of a matching circuit to the antenna assembly itself.The assembly comprises a tubular member 4 having a shape formed by rounding a flexible insulation film into a tube, a circuit bo...
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JP2003520476A |
An antenna. The antenna includes a first dielectric antenna rod having a first dielectric constant. The first dielectric antenna rod is coupled to a first frequency transmission source for propagating first frequency band radiation from ...
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JP3420233B2 |
To provide a small compound antenna which works in different frequency bands. A first loop antenna 2 for GPS is formed on a dielectric base 10. A second loop antenna 3 for radio wave beacon in VICS is formed on the same axis on the inner...
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JP3420122B2 |
To effectively use material and reduce a cost for treating industrial waste by forming an electric field type antenna at the frame part of a substrate in contact with a carrying roller to be used for a re-flow process for soldering circu...
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JP3417682B2 |
PURPOSE: To from/control the change of an antenna beam by arranging parasitic helical antenna elements adjacently to a radiation helical antenna element group and arranging them while shifting the heights from the base of the radiation h...
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JP3416117B2 |
A communication terminal including a communication unit, a longitudinal antenna enclosed in a radome, and a pivot connecting the antenna to the unit for pivoting about an axis with an RF connection to the unit. The unit is in a box-shape...
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JP2003518791A |
An antenna for a mobile communication terminal in which part of an antenna rod is slidably mounted into an assist antenna rod such that the antenna may be selectively extended in one or two stages. A connecting portion between the antenn...
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JP3415519B2 |
To contact a helical element and a mount metallic fixture at a stable position. Helical projections 35 are formed to a circumferential side face of a bobbin 31 and the helical element is screwed to helical grooves 36 formed among the gro...
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JP3412686B2 |
To provide a helical antenna where a dielectric loss can be reduced, removal from a die can be facilitated and weight reduction is attained. An antenna section 2 of the helical antenna consists of an antenna element 4 wound in spiral on ...
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JP3410111B2 |
An antenna is provided that receives electromagnetic radiation and includes a dielectric substrate (106). First and second spirals (60 and 70) on a first surface of the substrate (106) radiate the electromagnetic radiation. A third spira...
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JP3409069B2 |
To eliminate the need for any additional matching circuit on a printed circuit board to reduce interference caused by a human hand and the printed circuit board and to improve the antenna performance at a housed position. A housing type ...
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JP2003142932A |
To make side lobe levels bilaterally symmetrical and low.On a cavity 11 comprising a flat plate part 11a and an erected part 11b, a conical helical element 10 is arranged. The lower part of this conical helical element 10 and the erected...
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JP2003142933A |
To obtain an antenna system which suppresses the occurrence of an unwanted induced current without decreasing antenna gain.The antenna system is equipped with a transmission line 1 comprising two parallel lines 1a and 1b and dipole eleme...
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JP3405829B2 |
PURPOSE: To provide a broad band antenna with a high gain and less gain fluctuation over a wide frequency range. CONSTITUTION: A reflector body structure 3 is provided in the inside of a cylindrical case 5 and a radiator in which equiang...
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JP3405566B2 |
PURPOSE: To provide an electronic article monitor(ESA) device and an assembly in which a power condition can be reduced while a zero section can be escaped, and the uniformity of a transmission field can be improved by reducing the conne...
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JP3399513B2 |
To narrow a diameter and then to easily perform assembly in a short time. An element 100 and a power feeding circuit 210 are connected by a connector, and the connector is composed of a connection pin 310 and the annular ring 300A of pla...
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JP3397234B2 |
To provide a mobile communication terminal equipment and a standby reception method capable of preventing the degradation of standby reception performance (especially at the time of satellite standby) while maintaining portability in the...
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JP3394214B2 |
To cope with a horizontal polarization radar device as well as a circular polarization radar as a matter of course but also a vertical polarization radar by equipping a transponder with a circular polarization antenna part for receiving ...
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JP2003101328A |
To provide a helical antenna that can reduce the number of manufacturing steps and has light weight and high rigidity.Unlike the conventional helical antenna manufacturing method in which a helical antenna is manufactured through two ste...
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JP3389375B2 |
To provide a shared antenna which is miniaturized and improved in the degree of freedom for design and capable of communicating with both base stations for satellite communication of the mobile object communication of portable telephone ...
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JP3388633B2 |
PURPOSE: To increase gain even in a state that an antenna is CONSTITUTION: The lover terminal of a line antenna 13 is connected to a connection member 15 in a state that the line antenna is drawn out, and the connection member 15 is conn...
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JP2003087032A |
To provide a cylindrical antenna tentative locking structure for tenta tively locking a cylindrical antenna to a circuit board before soldering work.A positioning tab 5 is provided at an end section, in the direction of the cylindrical a...
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JP2003087029A |
To provide a monopole antenna for easily and reliably preventing the biasing of radiation characteristics.The monopole (5) is set erect at one surface side of a circuit board (3), at the same time, a metal case (6) is provided at the oth...
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JP2003087046A |
To provide an instantaneously-welded antenna.A coil is laid upon one end of a metallic seat, and the metallic seat and the coil are put in the combination hole of a plastic outer sleeve, and the metallic seat is provided with a heating f...
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JP3387422B2 |
To reduce the cost and the size and to make the characteristic excellent. Resonator holes 22a to 22c on the side of a transmission filter, resonator holes 23a to 23c on the side of a reception filter and an external connection hole 24a a...
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JP2003078336A |
To comparatively widen directivity, especially to increase gains.A laminated spiral antenna consists of a lowermost layer spiral 1 which is formed by etching processing, etc., on a planar substrate 10 made of a dielectric slab, and an up...
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JP2003509883A |
A multifilar antenna comprises n spaced antenna filaments, where n is an integer greater than 1; a matching circuit for matching the characteristic impedance of the antenna to that of a transmitting and/or receiving apparatus; a weightin...
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JP3385768B2 |
PURPOSE: To provide an inexpensive and practical helical antenna, to change easy its helix angle, sufficient in strength and stable in form. CONSTITUTION: The sleeves 11 of a hollow dielectric are arranged along a shaft. The hollow shaft...
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JP3384826B2 |
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JP2003069327A |
To provide an antenna with a structure that obtains an excellent antenna gain by suppressing the antenna gain from being deteriorated due to the contact of a hand or fingers with the antenna.The antenna 10a provided in a mobile wireless ...
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JP2003508944A |
A personal communications apparatus comprises an elongate body 202 incorporating an antenna diversity arrangement in which first and second antennas ( 102 A, 102 B) are located at opposite ends of the body. In one embodiment a microphone...
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JP3382900B2 |
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JP3380240B2 |
An antenna system for receiving radiowaves includes a Lundeburg-type lens which reflects radiowaves to a focal point of the lens. A helical primary feed is located in the proximity of the focal point. Electronic circuitry for processing ...
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JP2003506939A |
A radio device comprises a receiving circuit and/or a transmitting circuit, and an antenna assembly including a receiving antenna coupled to the receiving circuit and/or a transmitting antenna coupled to the transmitting circuit. The ant...
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JP2003037430A |
To provide a vibration-proof helical antenna with improved durability. An antenna pattern 2, made of a conductor, is formed in a helix shape along the circumferential face of a cylindrical body 1, in which a flexible insulation film is m...
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JP2003032024A |
To provide a chip antenna for use in a mobile communication terminal such as the short distance wireless communication (Bluetooth), and a wireless LAN(local area network).The chip antenna includes the following elements. That is, an ante...
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JP2003032023A |
To provide a chip antenna for to be used in the short distance wireless communication (Bluetooth), a wireless LAN(local area network), a mobile com munication terminal or the like.The chip antenna includes the following elements. That is...
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JP2003008278A |
To provide a convenient electromagnetic wave removing means capable of removing or reducing electromagnetic waves, in a living space or the like by mounting at an adequate position in the living space such as inside rooms.The tool is ess...
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JP2003008335A |
To provide an antenna apparatus that can obtain a reception gain over a desired elevation angle range without increasing volume, weight, and costs.To each antennal element at a helical antenna section having antenna elements being set ap...
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JP3359684B2 |
PURPOSE:To provide a signal transmitter in which simple and high precision signal transmission can be attained according to a transmitted signal, in the non-contact signal transmission when a transmitting part and a receiving part are re...
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JP2002544691A |
A feed or output-coupling apparatus for coaxial lines has a spur line which is short-circuited at the end. In order, at least in the case of a single coaxial line, to allow a broadband connection of the inner conductor to the outer condu...
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JP2002359514A |
To provide a helical antenna, having a plurality of resonance frequencies, which is easy to improve antenna characteristics. In a helical antenna (2), in which a radial element (3) is formed by winding around or turning up a conductor (3...
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JP3352480B2 |
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JP2002344221A |
To provide a helical antenna and a method of manufacturing the same.A coil-shaped antenna element 1 is blanked out from a conductive metal plate and sealed up with insulation resin into a helical antenna. The antenna element 1 is formed ...
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JP3349666B2 |
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JP2002330018A |
To provide a meandering antenna which is small, light in weight, and easily adjustable for resonance frequency and to provide a method of adjusting resonance frequency.A meandering conductor 13 is formed on the surface of a base body 11,...
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JP3344688B2 |
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JP3344217B2 |
To reduce the return loss of an antenna system by reducing the reactance generated between a coaxial cable provided on a substrate and a dipole antenna. A through hole 7 is formed through a substrate 3 on a coaxial cable 2a side front th...
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JP3340958B2 |
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