824results about "Telescopic elements" patented technology

A receiver receives an electromagnetic signal via an antenna mounted on an antenna mast. A signal evaluator determines or measures a signal quality level associated with the received electromagnetic signal. The signal quality compares the determined signal quality level to a threshold minimum signal quality level. A current elevational position of the antenna mast is detected or tracked. The antenna mast is raised to a greater height than the current elevational position if the compared signal quality level is less than the threshold minimum signal quality level and if the current elevational position is less than a maximum height of the antenna mast.

In a portable radio communication apparatus including a housing, at least one part of at least one of the housing is formed as a housing electrical conductor portion by an electrically conductive material. The housing electrical conductor portion is connected with a radio communication circuit of the portable radio communication apparatus so as to operate as at least one part of an unbalanced type antenna of the radio communication circuit. Further, the portable radio communication apparatus further includes a boom portion coupled with the housing at least at two positions so as to provide at least one penetrating hole between the housing and the boom portion.

An access point operates in an 802.11 wireless communication network communicating with a client station, and includes a smart antenna for generating directional antenna beams and an omni-directional antenna beam. An antenna steering algorithm scans the directional antenna beams and the omni-directional antenna beam for receiving signals from the client station. The signals received via each scanned antenna beam are measured, and one of the antenna beams is selected based upon the measuring for communicating with the client station. The selected antenna beam is preferably a directional antenna beam. Once the directional antenna beam has been selected, there are several usage rules for exchanging data with the client station. The usage rules are directed to an active state of the access point, which includes a data transmission mode and a data reception mode.

An antenna means for a portable radio communication device, in particular a hand-portable mobile telephone, having at least one radiating element that has a meandering and cylindrical configuration. This structure is specifically advantageous in combination with an extendable and retractable whip antenna and, when having two or more meandering radiating elements, in multi-band radiating structures. The antenna device is suitable for manufacturing in large quantities, for example by a flexible printed circuit board technique.

An antenna apparatus that has a base and an antenna element with a balanced RF output, which receives RF signals within a first band of frequencies. The apparatus includes a mount engaged with the base that rotatably supports the antenna about an axis of rotation. The apparatus has a balun with a balanced RF input and an unbalanced RF output. A feed line is coupled between the balanced RF output and the balanced RF input. The feed line includes two electrical conductors that have a predetermined length and that are aligned substantially in parallel, and supportively spaced apart a predetermined distance by plural insulators. The feed line is further arranged to maintain the predetermined distance between the two electrical conductors as the antenna element rotates with respect to the base. The predetermined length and the predetermined distance are selected to yield a narrow range of impedances within the first band of frequencies as measured at the unbalanced RF output of the balun, which enables efficient coupling of the RF signals from the unbalanced RF output of the balun.

Disclosed is a mobile terminal comprising: a terminal body having a touch screen; an audio jack mounted to one side of the terminal body, and connected to an audio output device; and an antenna device detachably mounted to the audio jack, wherein the antenna device includes: an antenna body implemented in the form of a rod having a predetermined length; a connector formed atone end of the antenna body so as to be inserted into the audio jack, and including one or more feeding terminals; and a touch tip provided at an end of the connector, and configured to manipulate the touch screen.

Antenna structure (200) which finds particular utility in mobile stations and the electrical characteristics of which can be electrically modified. The radiating element (210) of the antenna or a part thereof is manufactured from a strongly magnetostrictive material. The antenna is equipped with at least one electromagnet (220) by means of which a magnetic field (ψ) can be generated into the magnetostrictive material. This causes the radiating element to grow (Δl) in a certain direction, whereby the resonance frequency of the antenna will decrease. The antenna can be electrically adjusted without adding any component in the antenna itself, thereby making the adjustment reliable.

In an antenna device and its assembly method as well as a wireless communication terminal and its assembly method, an antenna element is held in an antenna holding member. A circuit board formed with an electrode to supply power to the antenna element is held on a board holding member. The antenna element and the electrode of the circuit board are electrically connected each other by means of a connection member having elasticity by fixing the antenna holding member on the board holding member. This enables the antenna holding member to be fixed on the board holding member easily because the antenna element is held in the antenna holding member in advance, and concurrently the antenna element can be electrically connected to the electrode of the circuit board by means of the connection member by merely fixing the antenna holding member on the board holding member, thus markedly enhancing the assembly of the antenna devices and wireless communication terminal units.

A mounting bracket includes a single mount for attaching to the soffit of a building for adjustably carrying a satellite dish antenna. The mount includes a base having holes for receiving screws to secure the mount to structural members such as studs or trusses to which the soffit is attached. A body portion of the mount includes a bore for receiving an arm of the mounting bracket. One end of the arm includes a plate adapted for attaching the arm to a satellite antenna dish assembly. Once the arm is positioned within the mount, setscrews lock the arm in its desired place within the bore, thus securing the satellite antenna to a desired location on the soffit.

A wrist-mounted communication device comprising a cellular phone mechanism configured to transmit and receive communication signals. The device includes an antenna system so as to transmit and receive signals. The antenna system further comprisesat least one antenna extendable away from the horizontal plane of the communication device.

Provided is a novel rib unfolding mechanism of high precision umbrella type antenna; a motor and a speed reducer provide power for the rib unfolding mechanism; a lead screw is connected with the speed reducer via a shaft coupling block; the lead screw rotates under the drive of the speed reducer; a nut is sleeve on the lead screw in order to transform the rotation movement of the lead screw into the up and down linear movement of the nut; a sliding disk is sleeve on a guiding sleeve; the sliding disk is connected with the nut by a limit screw; and the sliding disk moves up and down along with the nut; one end of a connecting rod is hinged with the sliding disk through a spindle; the other end is hinged with a locking arm; umbrella type antenna ribs are installed on a H surface of the locking arm; the connecting rod drives the locking arm to rotate; the rotation of the locking arm drives the antenna ribs to finish unfolding and folding actions; an in-position locking device is used for locking after the antenna ribs are unfolded in position, thus giving the antenna ribs enough rigidity; the novel rib unfolding mechanism of high precision umbrella type antenna achieves smooth unfolding and folding of the high precise umbrella type antenna; and the process is controllable; the novel rib unfolding mechanism of high precision umbrella type antenna has advantages of high in repeatedly unfolding precision and small in thermal deformation.

A RFID system applying to a three-dimensional jigsaw is provided. The RFID system includes a jigsaw substrate having a plurality of blocks, a plurality of jigsaw units corresponding to each blocks of the jigsaw substrate, a RFID reader having a plurality of antennas positioned in a position of each blocks of the jigsaw substrate, and a plurality of tags positioned in a position of each face of a three-dimensional jigsaw unit corresponding to the positions of the antennas, wherein the RFID reader communicates to the tags using modulated radio signals through the antennas and the tags respond with modulated radio signals in order to determine whether the orientation of the three-dimensional jigsaw unit is correct or not.

An extendable spar buoy sea-based communication system includes a spar buoy having a retracted configuration deployable from an underwater vessel and an extended configuration after deployment, and a communication subsystem mounted to the top of the spar buoy and supported thereby.

The present invention relates to a coating composition for forming an anti-reflective coating layer for a display device, comprising a fluorinated silane with low surface tension, a conductive polymer with antistatic properties, water, and a solvent. Thus, the coating film of the present invention prepared by coating the composition has high anti-reflection, excellent stain resistance to liquid-phase stains such as fingerprints and the solid-phase stains such as dust by controlling the refractive index, surface energy, and conductivity, and thus can be usefully applied to the outermost side of a display device, regardless of the type of substrates such as a Braun tube or a flat display film and the presence of other coating layers such as a hard coating layer and an anti-glare coating layer.

An antenna device includes a housing defining an interior cavity, a UHF antenna element, two VHF antenna elements and two WiFi antenna elements. The antenna elements are mounted to the housing and are selectively adjustable between a vertical, upright position and a folded, horizontal position. The antenna elements are situated on the housing to provide an omni-directional antenna pattern for receiving broadcast signals. Antenna circuitry provided within the interior cavity of the housing receives signals from the antenna elements and generates an output signal that is provided to at least one output connector mounted on the housing or on one or more signal cables extending therefrom and to an external electronic device connected thereto.