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WO/2004/027930A1 |
The invention relates to a helical antenna comprising at least one helix which is formed by at least two radiating wires (31). According to the invention, at least one of said radiating wires is associated with a parasitic wire (34) havi...
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WO/2004/021563A1 |
The invention relates to a pre-amplifier circuit (14) comprising at least one transistor (1) coupling a signal input (5) to a signal output. A high-frequency useful signal can be supplied to the signal input (5). Said circuit also compri...
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WO/2004/010457A1 |
An antenna arrangement for generating an rf field distribution at a plasma generating region inside a chamber wall of a process chamber of a plasma processing apparatus is described. The antenna arrangement includes an rf inductive anten...
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WO/2004/004061A1 |
RF and microwave radiation directing or controlling components are provided that may be monolithic, that may be formed from a plurality of electrodeposition operations and/or from a plurality of deposited layers of material, that may inc...
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WO/2004/001896A1 |
The present invention relates to a multiple band-type antenna and method of producing the same. In the present invention, a connecting part is disposed between a helical antenna element and a connector to have a space and form an impedan...
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WO/2004/001895A1 |
An antenna for portable radio in which a high gain and a wide band are realized. An inverted L-shaped antenna (10) is a feeding element having one end part connected electrically with one plate surface of a circuit board (12) through a f...
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WO/2003/107483A1 |
An antenna element is disclosed, having a ground plane (106), a helix (104) disposed above the ground plane (106), the helix (104) being connectable to a communications apparatus at a helix end (214) located near the ground plane (106), ...
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WO/2003/107478A1 |
A small antenna operating at a plurality of frequency bands comprising a pattern of antennal elements (14) resonant at a plurality of frequency bands formed as a plurality of helical lines on the outer circumferential surface of an anten...
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WO/2003/105276A1 |
An antenna including a base (10), a windback coil (12) including a longitudinal portion (16) and a coil portion (20), mechanically mounted onto the base and electrically coupled thereto, and a second coil (22) mechanically mounted onto t...
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WO/2003/094291A2 |
The invention concerns a passive tunable broadband antenna. The antenna radiating element consists of stacked toroids (T) connected in series, means (a, c) being provided for shorting the toroids individually and at will, and means (b, d...
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WO/2003/090311A2 |
A measuring while drilling system (28) typically has a metal pipework (16) extending underground connected to an antenna (26a). The metal pipework (16) and the antenna (26a) are both connected to a type of downhole equipment. The antenna...
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WO/2003/071631A1 |
A multifilar helix antenna comprises a plurality of helical antenna filaments each having a square waveform pattern along its length, giving reduced axial length. Also described is a multifilar helix antenna comprising a plurality of hel...
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WO/2003/067703A1 |
An antenna device has at least one antenna element (3) with two radiators (4 and 5) disposed on a retainer member (23). The retainer member may be a separate unit but may also constitute an integral part of a casing (1) for a cell or mob...
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WO/2003/060677A1 |
The present invention relates to a desktop personal computer (desktop pc). Especially the present invention relates to a heat sink from a high heat radiation devices such as a cpu, a vga chip in a desktop pc. The structure of this invent...
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WO/2003/050917A1 |
An antenna system comprising a plurality of antennas (70, 76, 140, 142) designed and oriented to provide one or more of radiation pattern, signal polarization and spatial diversity. The various diversity operational characteristics are a...
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WO/2003/046738A1 |
A hybrid serial/parallel bus interface method for a base station has a data block demultiplexing device (40). The data block demultiplexing device has an input configured to receive a data block and demultiplexes the data block into a pl...
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WO/2003/047034A1 |
A first loop antenna (2) for GPS use is formed on a dielectric board (10) to make a small−sized composite antenna for action in different frequency bands. A second loop antenna (3) for electromagnetic beacon in VICS is formed almost co...
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WO/2003/044895A1 |
A QHA antenna and feed network for a GPS receiver has a helical antenna with a pair of baluns mounted on a PCB at right angles to a central axis of the antenna. Each balun can provide or combine two RF signals 180° phase shifted relativ...
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WO/2003/044894A1 |
An antenna assembly (2) for a wireless communication device including a first electrically conductive loop (L1) in a first plane, a second electrically conductive loop (L2) in a second plane orthogonal to the first plane, and a block of ...
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WO/2003/038945A1 |
A multiple-surface antenna, and a method of receiving signals using an antenna, are disclosed. The multi-surface antenna includes a multi-surface dielectric substrate and a conductive trace formed on at least two surfaces of the dielectr...
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WO/2003/038944A1 |
The present invention relates to an antenna for wireless communication. The antenna includes a holder part having a cylindrical shape, of which one end and side portion are closed, and a main rod part of which one end is connected with t...
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WO/2003/036760A1 |
In a transmission antenna comprising an antenna coil that has a core around which a coil wire are wound and a capacitor that is connected to the coil wire and forms a series resonant circuit along with the inductance of the antenna coil,...
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WO/2003/036761A1 |
A transmission antenna comprises an armature coil equipped with a winding−wound core and a capacitor connected to the winding for forming a series resonance circuit with the inductor of this antenna coil. This antenna coil comprises a ...
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WO/2003/034603A1 |
A mobile communication system has a multi-band antenna capable of receiving and processing signals of GPS, CDMA, and PCS bands. In the system, a GPS processing section receives a signal of a first frequency band, so as to generate global...
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WO/2003/034535A1 |
An integral antenna that receives television and FM radio signals and satellite radio signals includes a multi−element antenna portion having a boom (12) supported by a mast (22) and a plurality of parallel, spaced apart dipole element...
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WO/2003/030300A1 |
An antenna coil (10) comprising an air−core coil (12) coiled in a spiral shape within a plane, and a flat magnetic−core member (13) inserted in the air−core coil (12) so as to be almost parallel to the plane of the coil (12). The m...
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WO/2003/030302A1 |
An antenna (1) for use in a radio communication device the antenna having a length of not greater than 100mm and including a first portion (3) comprising a conductive helical coil extending along an axis (2) and located between and elect...
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WO/2003/023901A1 |
A base station antenna array comprises a ground plane (34) and a parallel array of antennae (50) above the ground plane (Figs. 8-14). The antennas each have a progression of radiating elements (65) whose length increases in a direction a...
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WO/2003/021824A1 |
A radio terminal testing instrument comprises an antenna coupler (20), a connection member (16), and a measuring unit (15). The antenna coupler (20) has a placing member (35), a coupling antenna (25), a pair of through−connection porti...
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WO/2003/017420A1 |
Antennas and methods of manufacturing and using antennas suited for use in mobile devices are described. The described antennas include an antenna arm (104) and a conical spring radiating element (108) attached to one end of the arm. The...
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WO/2003/015215A1 |
Frequency-dependent phase center movement in near-field, unshielded, electromagnetic susceptibility testing using a log-periodic dipole can be significantly reduced by bending the rearmost dipole elements forward. Each bent dipole elemen...
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WO/2003/003515A1 |
There is disclosed a meanderline loaded antenna comprising a ground plane, a non driven vertical element affixed thereto, a driven vertical element and a shaped top radiating element conductively connected between the driven and non-driv...
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WO/2002/101879A1 |
An antenna. The antenna (20) includes a first dielectric antenna rod (22) having a first dielectric constant (23). The first dielectric antenna rod is coupled to a first frequency transmission source (27) for propagating first frequency ...
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WO/2002/099928A1 |
There is disclosed a meanderline-loaded antenna comprising a ground plane, a non-driven element affixed thereto, a driven or receiving element fixed thereto and a horizontal element between the driven and the non-driven elements. The non...
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WO/2002/097922A1 |
An antenna of generally symmetrical form and having a longitudinal axis comprising: a feed point member located at one end of the antenna; an attachment point means at the other end of the antenna to the one end and spaced axially from t...
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WO2001052354A9 |
An antenna. The antenna (20) includes a first dielectric antenna rod having a first dielectric constant ( epsilon 3). The first dielectric antenna rod (22) is coupled to a first frequency transmission source (27) for propagating first fr...
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WO/2002/087017A1 |
This invention relates to antennae and in particular to antennae of the multi-element helically wound type. An helical antenna according to the invention has at least one conductive helix having a vertically orientated central longitudin...
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WO/2002/084799A1 |
A multi-filar spiral antenna for a telecommunications device. The antenna comprises at least two spiral arm radiating elements each having an outer end and an inner end. A feed is connected to each outer end. When an electrical signal is...
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WO/2002/067373A1 |
Antenna systems for use with wireless communicators, such as radiotelephones, are provided and include a first antenna configured to be internally mounted within a wireless communicator and a retractable, second antenna that couples with...
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WO/2002/063719A1 |
A built-in antenna used in transmitting/receiving radio waves of several gigacycles is improved and downsized for suitability in industrial production and increase in tuning band width. An antenna pattern (6) resonating at $g(l)/4' is fo...
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WO/2002/054533A1 |
An antenna comprising a substrate, a ground portion mounted on the substrate, a first radiation element disposed near the side face of the substrate, formed helically and having a center axis generally parallel to the side of the ground ...
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WO/2002/054539A1 |
By improving the structures of a spring and a c-ring, which are built inside a helical antenna, and thus enhancing the width of the band of the antenna, despite change in frequency, communication quality is less influenced, and subsequen...
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WO2000064003A9 |
The invention describes a system, method, and means for an MRI guidewire that can be visible on an MRI; can act as an antenna, and receive MRI signals from surrounding subject matter; and can allow the use of multiple interventional tool...
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WO/2002/049151A1 |
An antenna arrangement comprises a folded structure (100) comprising first and second sections (102,104) defining a transmission line. The sections may be meander-line elements or other physically-shortened electric elements, for example...
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WO/2002/045209A1 |
There is disclosed a meanderline loaded antenna comprising a ground plane, a plurality of vertical elements orthogonally affixed thereto, a driven vertical element affixed thereto and a horizontal element between the vertical elements. A...
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WO/2002/045208A1 |
When a contact terminal (11) is inserted from the lower end of a bobbin (12) and fixed in place, the contact terminal (11) is secured unremovably to a lower part of the bobbin (12) through action of raised pieces (11c). A turn down part ...
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WO/2002/037607A1 |
A planar type wideband LPDA antenna has an UHF band of 470 MHz to 752 MHz and comprises: a nonconductive substrate board having a low dielectric and a small loss of an electromagnetic wave; and an antenna pattern arranged on the noncondu...
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WO/2002/037609A1 |
An antenna for a telecommunications device, comprising at least three helical radiating elements substantially equally spaced about, and concentric to, a longitudinal axis of the antenna. The antenna has a different physical property alo...
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WO2002015329B1 |
An electromagnetic antenna (16, 17, 30) includes a multiply connected surface, such as a toroidal surface; first and second insulated conductors (18, 20); and first and second signal terminals (34, 36). The first insulated conductor (18)...
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WO/2002/033788A1 |
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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