摘要:
A space deployable antenna that includes an inflatable envelope, a cylindrical reflector formed on a wall of the envelope, a catenary support frame for maintaining the cylindrical shape of the cylindrical reflector, and a feed array support structure connected to the catenary support frame.
摘要:
An apparatus for reducing hearing aid radio frequency (RF) interference including a directional multi-band and/or single band antenna for use with PWDs such as digital cellphones is disclosed. The apparatus greatly reduces or eliminates the audio noise induced in hearing aids by the PWDs and allows operation of a hearing aid during PWD operation. In operation, the apparatus may be provided on the PWD side away from the user's head. The apparatus may be integrated into the PWB during its manufacture or provided as an after market assembly for a PWD that has a port for connection of an external antenna. The apparatus provides for improved front-to-back ratio as compared to antennas currently in use on PWD's, and therefore also reduces SAR (specific absorption rate), the level of RF energy received into the head by a PWD.
摘要:
The wireless communication device contains at least one conductive tab that provides an antenna. The tab(s) form a pole antenna, and the tabs may also be attached across a slot to form a slot antenna. The tab(s) may be attached across a slot created in a package to form a slot antenna, or the tab(s) may be attached to a slot that is created as part of the wireless communication device to form a slot antenna. The tab(s) and/or the slot may also contain an adhesive material to attach the wireless communication device to a package, container or other material. More than one slot may be provided to form a circularly polarized antenna. The carrier may be a conductive material in which tabs are formed as part of the carrier before the wireless communication device is attached. The wireless communication device may have an asymmetrical antenna arrangement.
摘要:
The present invention is a one-piece molded plastic post/wall flag holder used to display smaller flags, banners or pennants on post and walls for decorative purposes. The flag holder displays smaller flag, banners or pennants at a forty-five (45) degree angle. The flag holder can be attached to wood with screws or to finished surfaces with double-sided adhesive mounting tape and/or Velcronull (a trademark for a hook and loop fastening system).
摘要:
A tower for a wireless transmission device including at least one shaft extending upwardly between top and bottom portions, transverse spars extending outwardly from the shaft, at least one brace connected to at least one of the spars and extending between the top and bottom portions, wherein the transverse spars are articulated in relation to the shaft and form, in conjunction with the braces, cells conserving parallelism of the spars.
摘要:
A device for securing a vehicle antenna to a vehicle body is described, to prevent the vehicle antenna from tilting out of the vehicle body in the mounting operation. The device includes projections which engage behind an orifice in the vehicle body for introducing the device on the side of the vehicle body facing away from the vehicle antenna.
摘要:
A fishing pole holding device in accordance with the present invention, generally, includes a base member and a cradle for movably resting on the base member. The cradle is constructed and arranged to support a fishing pole thereon, and rockably balances on the base with the fishing pole attached thereto. Since the areas of contact between the base member and cradle are small, a rocking motion imparted to a fishing pole mounted on the cradle will continue for an extended time period.
摘要:
Mast for a source of electromagnetic waves, comprising a number of peripheral rods (1) extending in vertical direction, the peripheral rods being mutually connected by transverse rods (2), and forming a space for accommodating the electromagnetic wave source in, or at the top of, the mast. The mast is provided with a stabilisation device for reducing uncontrollable natural vibrations in the event of hypercritical wind speeds, said device being accommodated in, or on top of, the mast. The mast advantageously supports a lining of dishes (7).
摘要:
An existing monopole is strengthened to accommodate loading associated with additional elements included in over-the-air communications systems by fixing strengthening elements to the exterior surface of the monopole. Monopole strengthening may require base plate strengthening, adding anchor bolts and/or foundation strengthening. This permits an existing monopole to accommodate more elements than were initially envisioned when the monopole was initially erected.
摘要:
A quick disconnect assembly 200 simply and quickly connects two components to one another with the high degree of accuracy while eliminating small, losable parts. The quick disconnect assembly includes a receiver 202 and a fork 206. The receiver is attached to a first fitting 204 on a first component 132. A fork end brace 205 extends out from the receiver to provide an attachment flange for the fork. The second component 137 has a second fitting 208 that is correspondingly shaped to mate against the first fitting and to house within the receiver. The fork is attached via a lanyard to the second fitting. The fork includes a securement knob 210 having threadings 207 that projects through the base of the fork. Rotation of the knob advances or retracts the threadings. The legs of the fork contain protrusions 212 and 214 are correspondingly shaped to mate with depressions 216 and 218 in the receiver. In order to connect the second component to the first component, the second fitting of the second component is inserted into the receiver and against the first fitting of the first component. The fork is then lowered over the receiver until the ends of the fork seat under the fork end brace. The fork is rotated about the end brace until the fork leg protrusions seat within the receiver depressions, and the fork is substantially flush against the receiver. The securement knob is then hand tightened, causing the threadings to secure into a correspondingly threaded aperture in the receiver to complete the installation.