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JP2005507596A |
The invention is an antenna for a wireless communication, comprising a cylindrical holder including a closed end and a side portion; and a rod including one end connected to the closed end of the holder.
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JP3628964B2 |
A micro-electromagnetic device having a three dimensional structure is formed using laser chemical vapor deposition on a conductive surface. Arrays of electromagnetic devices may be formed. Various techniques for facilitating deposition ...
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JP3627632B2 |
A chip antenna (1) capable of reducing the spiral pitch of an antenna line (20) to be smaller than that of a conventional one. Conductor patterns (25a - m) are electrically connected sequentially in series through via holes (12a - 1) so ...
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JP2005057526A |
To provide a directional antenna which can give an antenna of a station relatively weak directivity from the non-directivity in a horizontal plane in the direction of an access point.There are provided one rod type antenna body constitut...
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JP3614382B2 |
To provide an antenna for a dual band for receiving a plurality of frequency bands, which can be downsized while improving the receiving sensitivity characteristic, and to provide a method for manufacturing the antenna. A primary coil (1...
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JP3615166B2 |
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JP3610151B2 |
To attain communication with excellent sensitivity and to ensure a long speech time by using an antenna turn device to direct the direction of a circularly polarized wave antenna providing an excellent directivity into a flying direction...
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JP2004364335A |
To provide a dual band antenna for receiving a plurality of frequency bands, and its manufacturing method by which the antenna is miniaturized while improving receiving sensitivity characteristics of the antenna.A primary coil (100) is s...
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JP2004364040A |
To provide an small-sized antenna system having broadband frequency characteristics.A pair of spiral antenna elements 12, 13 are formed on the upper side of an antenna base board 11 whose size is nearly 100×100 mm, and feeding points 16...
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JP2004363675A |
To provide an antenna element and an antenna module which prevents the reduction of the transmission/reception gain due to an image current generated on a ground surface located in approximately parallel to the antenna element.The antenn...
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JP3595105B2 |
To eliminate the need of an independent battery fitting space and to save the space of a moving body satellite communication terminal that requires a high power and large battery power source by forming an antenna part containing a micro...
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JP3595856B2 |
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JP2004336331A |
To provide an axial mode helical antenna which can be made small in size, high in handling safety, improved in durability against window pressure and reduced in cost.The miniaturized straight polarized wave receiving axial mode helical a...
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JP2004336111A |
To provide a multibeam antenna for transmitting a radio wave in a plurality of directions using one antenna and minimizing the mount space of which is mounted the antenna so as to attain ease of mount.The multibeam antenna is characteriz...
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JP3587980B2 |
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JP2004304499A |
To provide an antenna device which can be miniaturized with a simple structure, and moreover, which can resonate with a plurality of frequencies without being affected by each element.The antenna is composed of a bar-like base member B, ...
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JP3580654B2 |
To simultaneously satisfy impedance matching, an antenna gain and a radiation pattern in a desired frequency by providing polygonal radiation elements having spatial extension at the tip of a feeding pin through a capacitive element. A m...
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JP2004288852A |
To enhance effects of diffusing phonons of a phonon-cooling type hot electron element in an HEB mixer using a superconductive conductor.A hot electron bolometer element comprises a dielectric substrate, a superconductive thin film formed...
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JP3572960B2 |
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JP2004266333A |
To provide an antenna device which is suitable for installing in a small radio machine and which forms the main beam of a horizontal polarized wave or a vertical polarized wave which are tilted in a horizontal direction.Linear elements 1...
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JP3565695B2 |
To provide an antenna of high quality which secures stable connection between a feeder line and a coaxial line by forming a microstrip line that shares the feeder line of a log periodic antenna pattern as the ground on a dielectric subst...
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JP3562048B2 |
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JP3564308B2 |
An antenna for portable radio apparatus, comprising a conductive filament arranged in a tapering corrugated configuration having an envelope extending from a narrow portion to a wider portion. The conductive filament is arcuately dispose...
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JP3560455B2 |
To provide an antenna device for a wristwatch type radio equipment to secure the high antenna gain and directivity when it's worn on a human body. This device includes a wristwatch body 2 which is mounted on an arm 4 via a band 3, a heli...
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JP3556540B2 |
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JP3553032B2 |
To provide an omnidirectional antenna that is configured small in size and compact. The omnidirectional antenna is provided with 1st and 2nd printed dipole antennas 10, 10 resulting from forming a couple of dipole antenna patterns 12 in ...
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JP2004208285A |
To provide an antenna of a colinear type having an omni-directional radiation pattern.The antenna includes a radiating portion 22 comprising three substantially rectilinear conductive wire elements that are mutually parallel, comprising ...
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JP3542505B2 |
To obtain an antenna power feeding circuit which does not need a balanced-to-unbalanced converter such as a balun and has a simple structure by providing a distribution circuit, which outputs power having phase difference of a specific d...
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JP2004194089A |
To solve the problem of deterioration in characteristics due to an LC trap circuit and the problem of difficulty in design/manufacturing, by employing a single antenna, in order to provide a smaller and lighter device.A transmission line...
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JP2004179952A |
To provide a small multi-resonance chip antenna capable of transmitting/receiving radio waves in a plurality of frequencies.This invention is provided with a base 1, a plurality of helical conductors 7, 8, 9 provided over the entire circ...
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JP3537770B2 |
Of two body parts constituting a cellular telephone, a back body part has a body main part and an antenna attachment portion. An antenna for transmitting and receiving radio waves to and from a satellite has a cylindrical excitation ante...
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JP3535136B2 |
An antenna device is provided with a transmission and reception antenna unit. The transmission and reception antenna unit includes an excitation antenna which is mounted on an antenna mounting section of the housing and a helical antenna...
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JP3528017B2 |
To ensure a desired resonance frequency. The chip antenna 10 is formed by providing a conductor 12 made of copper or copper alloy and wound in spiral in the lengthwise direction of a rectangular parallelepiped base 11 in the inside of th...
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JP3528406B2 |
To provide a chip antenna with directivity with respect to plural polarization planes and a wide frequency band width. The chip antenna 10 is formed by winding three conductors 11a-11c made of copper or copper alloy and being a helical a...
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JP2004136866A |
To magnetically couple an annular antenna of a transponder module arranged in a tire, with a transponder while separating mechanically.A loop antenna 32 is arranged so as to project through a through-hole of an annular body of the transp...
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JP2004128531A |
To provide an N-line helical antenna which broadens its radiation and improves its characteristic impedance.The N-line helical antenna has a ground plate (GP), four helical radiation elements (11-14) helically wound around a virtual cyli...
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JP2004512721A |
There is provided a helical antenna structure, which exhibits minimal influence from contact with a human body in a mobile terminal. In the helical antenna structure, a cap protrudes from an upper end of the mobile terminal, and a windin...
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JP3515797B2 |
PURPOSE: To obtain a light emitting means displaying a state of line provided to a helical antenna of a radio communication equipment easily observed from every direction and not giving an adverse effect due to heat on the antenna. CONST...
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JP3510961B2 |
To miniaturize the broad angle cirularly polarized wave antenna while keeping a desired radiation pattern of the antenna used for satellite communication. This antenna is configured by arranging a helical radiation element 2b that is cou...
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JP2004096207A |
To provide a dipole antenna having a cylindrical reflector whose upper end is closed that averages signal reception strength in a mobile phone service area.In the dipole antenna having a cylindrical reflector 3 whose upper end is closed,...
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JP2004509546A |
The present invention discloses a dual band antenna for a portable wireless device which can be suitably used for a cellular phone and a personal communication services (PCS) phone, by improving a spring structure of a helical antenna to...
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JP2004509536A |
A helical antenna includes at least a helix consisting of at least two radiating strands, at least one of the strands consisting of at least two segments, the winding angles of at least two of the segments being different and randomly or...
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JP2004080105A |
To provide a helical antenna which can be easily mounted on a circuit board, without employing a complicated structure.The helical antenna comprises a feeder terminal (3) formed on the base portion of a helical conductor body (1), and a ...
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JP2004080201A |
To provide a helical antenna wherein the input impedance of each feeding element can be measured and the input impedance of each feeding element is adjusted resulting in obtaining an excellent characteristic.A cylindrical helical antenna...
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JP3504531B2 |
To acquire wide-band characteristics by arraying an element antenna obtained by curving its antenna opening surface and reducing the interval in an array direction of respective element antennas to be shorter than a length along the open...
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JP3501206B2 |
To provide a planar spiral antenna with a driving reflector, without deterioration in gain in the a wide-band operating frequency. In this spiral antenna, composed of a dielectric substrate 3 for which spiral conductor patterns 1 and 2 a...
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JP2004505585A |
A helical antenna is described, which is formed by wire in a winding or twisting process and includes a helical part and a contact-making part, wherein the spring characteristics of the contact-making part allow advantageous contact-maki...
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JP2004056280A |
To provide a helical antenna suited for the miniaturization.The antenna comprises a dielectric block 4 having a columnar part 4a disposed inside the helix of a helical conductor 1 and a thick-walled annular part 4b disposed outside the h...
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JP2004048369A |
To provide a highly reliable composite antenna which is constituted by combining a circular polarization antenna with a vertical polarization antenna and is suitably miniaturized and made thin.A patch antenna 11 being a circular polariza...
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JP3495322B2 |
To obtain a helical antenna with improved accuracy for winding a flexible print board on a bobbin and easy fixing of the antenna This invention has an aluminum plate 5 and a bobbin 1 perpendicularly fixed on this plate, and the bobbin 1 ...
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