Abstract: Disclosed is a removable handle cover device for wrapping around a bar to prevent a user's hands to be in direct contact with the bar. The handle cover comprises at least one piece of material wrappable around a handle bar, one or more spring steel elements, and a releasing mechanism for quickly removing the handle cover from the bar. The device is operative to be quickly installed and removed from the handle bar by the user with a single action, while physically isolating the user's hands from the bar. The handle cover is able to prevent the user from being exposed to contaminants on or to contaminate the surface of the bar by increasing the efficacy in the implementation and performance of proven healthy practices, reducing the risk of contamination with and spreading of contagious diseases.

Abstract: Disclosed is an adaptive-spacing antenna system and a method for designing an adaptive-spacing antenna system. The antenna system and design method are operative to provide a configuration layout that reduces both the amount of material required to manufacture the antenna and the obtrusiveness caused by the antenna, while providing more flexibility for installation and a variety of options for aesthetic applications. The adaptive-spacing antenna comprises one or a combination of more than one set of straight-linear and curvilinear elements forming an adaptively-spaced grid or mesh structure. The system and method are particularly suitable for reducing the antenna weight, cost, and obtrusiveness during operation.

Abstract: Disclosed is an adaptive-spacing antenna system and a method for designing an adaptive-spacing antenna system. The antenna system and design method are operative to provide a configuration layout that reduces both the amount of material required to manufacture the antenna and the obtrusiveness caused by the antenna, while providing more flexibility for installation and a variety of options for aesthetic applications. The adaptive-spacing antenna comprises one or a combination of more than one set of straight-linear and curvilinear elements forming an adaptively-spaced grid or mesh structure. The system and method are particularly suitable for reducing the antenna weight, cost, and obtrusiveness during operation.

Abstract: Disclosed is an antenna desensitization system and a method for designing an antenna desensitization system. The system and method are operative to provide a configuration and positioning of an antenna desensitizer element, with respect to an antenna, to overcome a frequency detuning experienced during operation of such antenna. The antenna desensitizer element comprises one or a combination of more than one decoupling components selected from the group of a frequency selective surface, an electromagnetic band gap structure, a ferromagnetic material, an anisotropic material, a nanomaterial, a dielectric material, and a conductive material. The system and method are particularly suitable for reducing the antenna frequency detuning effects caused by an external agent, such as a user or operator of a mobile electronics device, during operation of such device.

Abstract: Disclosed is an antenna desensitization system and a method for designing an antenna desensitization system. The system and method are operative to provide a configuration and positioning of an antenna desensitizer element, with respect to an antenna, to overcome a frequency detuning experienced during operation of such antenna. The antenna desensitizer element comprises one or a combination of more than one decoupling components selected from the group of a frequency selective surface, an electromagnetic band gap structure, a ferromagnetic material, an anisotropic material, a nanomaterial, a dielectric material, and a conductive material. The system and method are particularly suitable for reducing the antenna frequency detuning effects caused by an external agent, such as a user or operator of a mobile electronics device, during operation of such device.

Abstract: Disclosed is an antenna capable of operating at more than one frequency band. The antenna comprises a first main helix antenna element and a second parasitic helix antenna element electromagnetically coupled to integrate a single radiofrequency connection structure operating in dual frequency bands. Furthermore, the antenna is configured to structurally combine a plurality of helix antenna elements to operate at multiple frequency bands having only one radiofrequency connector.

Abstract: A bowtie antenna is presented. The antenna includes a substrate with a metal layer. The bowtie-shaped dipole antenna is formed in the metal layer with two triangle elements and a gap between the two triangle elements. The bowtie-shaped antenna is shaped to receive signals in a lower portion of the UHF band. A pair of transmission lines is formed in the metal extending from the gap. At least one pair of tuning stubs is formed in the metal. The pair of tuning stubs extends from the transmission lines and is tuned to a frequency band that is different than the lower portion of the UHF band.

Abstract: Disclosed is an antenna capable of operating at more than one frequency band. The antenna comprises a first main helix antenna element and a second parasitic helix antenna elements electromagnetically coupled to integrate a single radiofrequency connection structure operating in dual frequency bands. The antenna is designed to be compact and reduce size, weight, and cost, while increasing versatility as compared to equivalent single-band frequency antennas designed using traditional design techniques.

Abstract: A portable, battery-powered, wireless WiFi signal repeater is presented. It is placed in very close proximity to a WiFi-enabled device and is capable of improving the. communication link between the device and base station.

Abstract: An apparatus and method are provided for deciphering recorded digital audio signals and using a smart card to pay for deciphering. Encrypted digital audio signals are recorded onto a recording medium, such as a compact disc or the like. When the user desires to listen to the recording, the encrypted recording is inserted into a player/recorder and a prepaid smart card is inserted into a smart card reader connected to the player/recorder. The smart card reader deducts a predetermined value from the card before allowing the player/recorder to decipher the encrypted recording, and record the deciphered audio onto a recording medium for playback.

Abstract: A signal measurement system tests an RF component in an RF test facility, such as an RF anechoic chamber. The system includes a repeater which is connected to an exterior antenna disposed outside the chamber and a transmitting antenna disposed inside the chamber. The repeater receives the RF broadcast signal from the exterior antenna and rebroadcasts it as an RF testing signal inside the chamber. The subject antenna receives the RF testing signal, which is then analyzed with a computer. The repeater may also modify the RF testing signal to produce a wide variety of test situations that mimic those available in a traditional field-test.

Abstract: A wideband patch antenna (90) is presented that comprises a patch (91) which is of pure metallic form or etched on a dielectric, that may be rectangular, elliptical, triangular, or any other shape. The patch is disposed a distance above a ground plane (92) and is driven by a helix-shaped or a three-dimensional probe (94) disposed between the patch and the ground plane. The probe is substantially normal to the ground plane. In addition, a plurality of such patch antennas may be combined to form antenna arrays or dual-band antenna structures.

Abstract: A quadrifilar helix antenna comprises a flexible substrate, four conductive elements with a feed network etched on a first portion of the flexible substrate, parasitic metallic lines etched on a second portion of the flexible substrate and a ground plane for the feed network. The resulting antenna structure is capable of efficiently receiving both satellite and terrestrial SDARS (Satellite digital audio radio service) signals.

Abstract: A signal measurement system tests an RF component in an RF test facility, such as an RF anechoic chamber. The system includes a repeater which is connected to an exterior antenna disposed outside the chamber and a transmitting antenna disposed inside the chamber. The repeater receives the RF broadcast signal from the exterior antenna and rebroadcasts it as an RF testing signal inside the chamber. The subject antenna receives the RF testing signal, which is then analyzed with a computer. The repeater may also modify the RF testing signal to produce a wide variety of test situations that mimic those available in a traditional field-test.