Bizarre Patents
A method for inducing cats to exercise consists of directing a beam of invisible light produced by a hand-held laser apparatus onto the floor or wall.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7489281 | Quadrifilar helical antenna A quadrifilar helical antenna comprising two pairs of filars having unequal lengths and phase quadrature signals propagating thereon. A conductive H-shaped impedance matching element matches a source impedance to an antenna impedance. The impedance matching element ... | 02/10/2009 |
| 7379030 | Artificial dielectric antenna elements An artificial dielectric antenna structure for reducing the mass and insertion loss of an antenna is provided. The artificial dielectric antenna structure includes a plurality of layers of dielectric material. Each layer of dielectric material has a dielectric const... | 05/27/2008 |
| 7350703 | Low temperature radio frequency identification tracking system The present invention relates to a storage device comprising an antenna for transmission of data to and/or from a radio frequency identification (RFID) tag. More specifically, the invention relates to a low or ultra-low temperature storage device comprising an anten... | 04/01/2008 |
| 7348931 | Unbalanced power feeding antenna device for making radio communications An antenna device which is connected to a radio module performing radio communications with a system using a first band and a system using a second band, has an antenna element which transmits/receives radio signals in the first and second bands. The antenna device ... | 03/25/2008 |
| 7333057 | Stacked patch antenna with distributed reactive network proximity feed A stacked patch antenna including a distributed reactive network proximity feed, preferably implemented in a microstrip metallization network, coupled to an active antenna patch element to feed the active antenna patch element to emit a field to parasitically stimul... | 02/19/2008 |
| 7274340 | Quad-band coupling element antenna structure An antenna module has a substrate, first and second coupling elements, and first and second resonant circuits disposed on the substrate. The first and second coupling elements are mounted to the substrate and particularly adapted to couple respective first and secon... | 09/25/2007 |
| 7262701 | Antenna structures for RFID devices An improved antenna structure for RFID tags uses a pair of bent dipole antennas having arms that extend substantially about an outer edge of an RFID substrate. The antennas can be adjusted to resonance at about a half-wavelength of an applied electromagnetic field i... | 08/28/2007 |
| 7221322 | Dual polarization antenna array with inter-element coupling and associated methods The dual-polarization, slot-mode antenna includes an array of dual-polarization, slot-mode, antenna units carried by a substrate, with each dual-polarization, slot-mode antenna unit having at least four patch antenna elements arranged in spaced apart relation about ... | 05/22/2007 |
| 7145518 | Multiple-frequency common antenna A multiple-frequency common antenna has a first substrate sheet and a second substrate sheet respectively structured by an HIP consisting of a metal plate, small metal plates disposed in two dimensions and linear metal bars connecting these elements. The antenna res... | 12/05/2006 |
| 7123207 | Ultra wideband bow-tie printed antenna A printed antenna includes a dielectric substrate having a pair of printed antenna elements to form a dipole antenna. On an antenna plane, an xy axis system is defined so that an origin is defined at a center of location of the antenna elements, and an x axis is set... | 10/17/2006 |
| 7088795 | Ultra wide band base band receiver The present invention is a receiver having a radio frequency (RF) front end, a pulse detector operatively coupled to the RF front end, and a data recovery unit operatively coupled to the pulse detector. The data recovery unit is configured to receive spread spectrum... | 08/08/2006 |
| 7084827 | Phased array antenna with an impedance matching layer and associated methods An antenna includes a substrate, and an array of dipole antenna elements on the substrate. Each dipole antenna element includes a medial feed portion and a pair of legs extending outwardly therefrom. Adjacent legs of adjacent dipole antenna elements include respecti... | 08/01/2006 |
| 7035246 | Maintaining a global time reference among a group of networked devices Synchronization is maintained among a plurality of network devices having local clocks that participate in a network. A first packet is broadcast from a first network device to other network devices that participate in the network. The first packet includes a global... | 04/25/2006 |
| 7031294 | Baseband wireless network for isochronous communication A wireless communication network system apparatus which provides for isochronous data transfer between node devices of the network, which provides at least one master node device which manages the data transmission between the other node devices of the network, whic... | 04/18/2006 |
| 7010025 | Circuit and method for an improved front end in duplex signal communication systems An improved analog front end and methods for increasing the power efficiency of duplex signals on a transmission line are disclosed. The improved analog front end bifurcates a hybrid into a fixed portion and an adaptive portion. The adaptive portion combines a biqua... | 03/07/2006 |
| 7002530 | Antenna An antenna has a central core with a central coupling region. A pair of helix antenna lines is formed a surface of the central core. A balun transformer is formed on a circuit board and electrically coupled to the pair of radiating antenna lines. Wherein, the circui... | 02/21/2006 |
| 6999028 | Ultra high frequency radio frequency identification tag An antenna design for radio frequency identification (“RFID”) tags. More particularly, the present invention relates to design for RFID tags particularly operating in the ultra high frequency (“UHF”) operating band. ... | 02/14/2006 |
| 6956896 | High accuracy receiver forward and reflected path test injection circuit There is disclosed an injection circuit for measuring radio frequency (RF) signals in an RF receiver for use in measuring the impedance match of a receive antenna and for use in calibrating receiver gain, wherein an advantageous embodiment of the injection circuit c... | 10/18/2005 |
| 6950077 | Antenna system for terrestrial broadcasting Provided is an antenna system for terrestrial broadcasting. The antenna system has a dipole antenna probe receiving a broadcast signal, a signal amplifier amplifying the received broadcast signal, an antenna matching unit matching impedances between the antenna prob... | 09/27/2005 |
| 6944148 | Apparatus and method for managing variable-sized data slots within a time division multiple access frame A reliable Medium Access Control layer protocol and method employing centralized management of communication in a Time Division Multiple Access network architecture. The Medium Access Control layer protocol implements Quality of Service guaranties to the layers of t... | 09/13/2005 |
| 6919851 | Broadband monopole/ dipole antenna with parallel inductor-resistor load circuits and matching networks A broadband loaded antenna and matching network with related methods for design optimization are disclosed. The loaded antenna structures may preferably be either monopole or dipole antennas, but the particular methods and techniques presented herein may be applied ... | 07/19/2005 |
| 6919858 | RF antenna coupling structure An RF antenna coupling structure includes a first transformer, a second transformer, and a transformer balun. The first transformer includes a primary winding and a secondary winding, wherein the primary winding of the first transformer is operably coupled to a powe... | 07/19/2005 |
| 6894648 | Antenna apparatus and a portable wireless communication apparatus using the same An antenna apparatus featuring a simple configuration and operability at a plurality of frequencies which are relatively proximate is provided. Phase shift circuits are connected respectively between feed points of a pair of antenna elements having different resonan... | 05/17/2005 |
| 6876337 | Small controlled parasitic antenna system and method for controlling same to optimally improve signal quality The invention relates to a small (0.5 wavelength or less) adaptable antenna system. In particular it relates to the use of loaded parasitic components in the antenna aperture for the purpose of controlling the RF properties of the antenna. Such an antenna system is ... | 04/05/2005 |
| 6864849 | Method and apparatus for creating an EH antenna An antenna system for transmitting and receiving, in association with a radio device that develops an H-field and an E-field corresponding to a radio frequency power signal having a voltage and a current, the voltage having a phase relationship to the current. The a... | 03/08/2005 |
| 6856299 | Horizontal polarized bi-directional FM stereo antenna A frequency modulation antenna includes: a hermetically sealed driver assembly, which includes a driver tube, a gamma tube, a spacer stamping between the driver tube and the gamma tube, and an impedance matching block assembly between the driver tube and the gamma t... | 02/15/2005 |
| 6823177 | Radio station with circularly polarised antennas A radio station including two antennas combined with respective first and second hybrid transmission polarization couplers is disclosed. Each antenna is arranged to generate two orthogonal electric field components in response to two respective quadrature radio sign... | 11/23/2004 |
| 6809699 | Dipole antenna array The dipole antenna array is formed by connecting a plurality of dipole antennas, one end of the dipole antenna array has an open stub and a balancing circuit to adjust the width of frequency band, impedance and gain of the antenna array. Each dipole antenna is added... | 10/26/2004 |
| 6741219 | Parallel-feed planar high-frequency antenna The present invention provides a planar antenna having a scalable multi-dipole structure for receiving, and transmitting high-frequency signals, including a plurality of opposing layers of conducting strips disposed upon either side of an insulating (dielectric) sub... | 05/25/2004 |
| 6704352 | High accuracy receiver forward and reflected path test injection circuit There is disclosed an injection circuit for measuring radio frequency (RF) signals in an RF receiver for use in measuring the impedance match of a receive antenna and for use in calibrating receiver gain, wherein an advantageous embodiment of the injectio... | 03/09/2004 |
| 6693602 | Antenna system An antenna system (1) with a particularly simple Con and a steep transmission angle, for lower frequencies in the short wave range. The inventive antenna system includes two antennae (2) which are interconnected by a control unit (4) and which together fo... | 02/17/2004 |
| 6538614 | Broadband antenna structure An antenna structure including at least one planar antenna element. In place of a balun, the antenna structure further includes a slotline for coupling the planar antenna element with an unbalanced load.... | 03/25/2003 |
| 6486846 | E H antenna In an antenna system for transmitting and receiving, in association with a radio device, electromagnetic radiation has an E-field component and an H-field component. The electromagnetic radiation corresponds to a radio frequency power signal having a curr... | 11/26/2002 |
| 6380895 | Trap microstrip PIFA The present invention relates to a small microstrip antenna device, mountable inside a hand-held radio communication device, for receiving and transmitting RF signals in one or more frequency bands. The microstrip antenna comprises a ground plane means (1... | 04/30/2002 |
| 6331815 | Dual-frequency matching circuit A dual-frequency matching circuit of the present invention comprises an output terminal to which a load is connected, an input terminal through which an input signal is input to the load, a series resonance circuit, which is composed of a series capacitor... | 12/18/2001 |
| 6323820 | Multiband antenna A multiband antenna has first and second antenna devices for transmitting or receiving. Each device has a dipole structure and associated dipole halves disposed opposite a base plate or reflector by baluns. The antenna devices are provided with a feed fro... | 11/27/2001 |
| 6236437 | Television tuner capable of receiving signals without being restricted by application site and television signal receiving unit for personal computer using the same A television signal receiving tuner comprising: an input terminal for admitting VHF and UHF band television signals; a correcting circuit connected to the input terminal and having inductors to correct an effective length of an antenna; a branching filter... | 05/22/2001 |
| 6054961 | Dual band, glass mount antenna and flexible housing therefor The present invention is directed to a dual band, omni-directional antenna having a symmetrical radiating structure defined by a pair of conductive portions interconnected by a tuning bridge formed on a printed circuit board. An outer housing holds the ci... | 04/25/2000 |
| 6046704 | Stamp-and-bend double-tuned radiating elements and antennas Double-tuned radiating elements 10 for cellular antennas are configured to enable stamping in one piece from flat sheet metal. Unitary construction incorporates a radiating section 22, an exciter section 14 and a balun section 12 in each radiating element... | 04/04/2000 |
| 6025811 | Closely coupled directional antenna Disclosed is a dipole array antenna that is particularly useful at UHF and microwave frequencies. In an exemplary embodiment, the antenna is comprised of two dipole radiating elements--a driven dipole of length L1 and an unfed element closely spaced from ... | 02/15/2000 |
