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...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
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| Number | Title | Issue Date |
| 7932867 | Methods and systems of changing antenna polarization A switch assembly selectively couples an antenna communication circuit to a first feed point of a first antenna, and selectively couples the antenna communication circuit to a second feed point of a second antenna. Each feed point is selected based on polarization o... | 04/26/2011 |
| 7825867 | Methods and systems of changing antenna polarization Methods and systems of changing antenna polarization. At least some of the illustrative embodiments are systems comprising an antenna having a first feed point and a second feed point, an antenna communication circuit, and a switch assembly that selectively couples ... | 11/02/2010 |
| 7398049 | Wireless local loop antenna A wireless local loop system is provided that includes a wireless base station that communicates with a subscriber station via a wireless link. The wireless link can carry a voice service, such as telephone calls, or a data service, such as internet browsing. The su... | 07/08/2008 |
| 7324056 | Broadband communication system for mobile users in a satellite-based network A satellite-based communications system operating at high data rates includes a plurality of satellites each having uplink and downlink antennas for transmitting and receiving a plurality of signals utilizing a plurality of spot beams to and from a plurality of cove... | 01/29/2008 |
| 7280848 | Active array antenna and system for beamforming An active antenna array for use in a beamforming antenna system. The antenna array includes multicarrier power amplifiers coupled to each antenna element wherein the outputs of the multicarrier power amplifiers are linearized. The antenna array communicates with a b... | 10/09/2007 |
| 7268735 | Antenna structure An antenna structure is composed of an antenna seat, a terminal, and an antenna set. The antenna set includes antennae, a matching circuit, conducting wires, and a lead wire. By the conducting wires and matching circuit connected on the antennae, an impedance matchi... | 09/11/2007 |
| 7190319 | Wave antenna wireless communication device and method A wireless communication device coupled to a wave antenna that provides greater increased durability and impedance matching. The wave antenna may be in the form of a polygonal, elliptical curve and/or coil shape. The wireless communication device is coupled to the w... | 03/13/2007 |
| 7177667 | Antenna remote control apparatus of mobile communication base station system An antenna remote control apparatus for a base station in a mobile communication system is disclosed. The antenna remote control apparatus includes a remote controller for matching a driving voltage for a motor used to control the beam direction of an antenna, a ref... | 02/13/2007 |
| 7154650 | Scanning apparatus Scanning apparatus operable in the microwave, mm-wave and infrared ranges and comprises a support structure, a first reflective disc or mirror (10) which is mounted in said support structure for rotation relative to the support structure about a first axis ( | 12/26/2006 |
| 7136675 | Method of distributing communications within a cell of a radio-communication network, and a corresponding device and base station The invention relates to a method of distributing communications established by radio-communication terminals, within a geographic cell of a radio-communication network, the geographic cell being sub-divided into at least two geographic sectors. According to ... | 11/14/2006 |
| 7109937 | Phased array planar antenna and a method thereof A phased array antenna system accommodating onto a platform for tracking a target moving relatively to the platform, the antenna system comprising a first planar active subsystem operable for receiving/transmitting an RF signal of a certain linear polarization direc... | 09/19/2006 |
| 7093345 | Wave antenna wireless communication device and method A wireless communication device coupled to a wave antenna that provides greater increased durability and impedance matching. The wave antenna is a conductor that is curved in alternating sections. The wireless communication device is coupled to the wave antenna to p... | 08/22/2006 |
| 7085592 | Wireless transmission evaluation system and method A signal testing system and method for evaluating wireless communication signals transmitted between a base station and a communication site is provided. The signal testing system comprises an antenna located at the communication site for communicating the wireless ... | 08/01/2006 |
| 7068235 | Antenna system In some embodiments, the multiple antennas are cooperated in the system to provide simultaneous communication with multiple remote sites. Embodiments comprises a first variable inclined continuous transverse stub (VICTS) antenna that comprises a perimeter and an ina... | 06/27/2006 |
| 7053859 | Support structure for antennas, transceiver apparatus and rotary coupling A support structure (10) for supporting a plurality of antennas (11) has a plurality of antenna supports (13) each for supporting at least one antenna (11). Each antenna support (13) is supported for rotation about an axis of rotat... | 05/30/2006 |
| 7043270 | Shared tower system for accomodating multiple service providers A system for sharing a cellular tower among multiple service providers comprises an antenna having an array of elements operable to define multiple, individual beams for signals in a communication frequency band and converter circuitry to convert the communication f... | 05/09/2006 |
| 7034749 | Antenna system for improving the performance of a short range wireless network An antenna system for providing network access services to wireless users generates at least a first and a second antenna beam, where the second antenna beam is movable with respect to the first. Additional antenna beams may also be generated. During installation of... | 04/25/2006 |
| 7015871 | Mobile radio antenna arrangement for a base station A mobile radio antenna arrangement for a base station includes a pivoting device which runs in the longitudinal direction and/or in the vertical direction is provided within the radome. A reflector is at least indirectly held and mounted on the pivoting device. The ... | 03/21/2006 |
| 7003322 | Architecture for digital shared antenna system to support existing base station hardware A legacy support block interfaces a shared antenna system with existing base station equipment of a service provider. Processing circuitry includes digital-to-analog converter circuitry, analog-to-digital converter circuitry, a local oscillator, and mixers. A shared... | 02/21/2006 |
| 6999042 | Low visual impact monopole tower for wireless communications An antenna system incorporating at least two antennas circumferentially arranged with a side-by-side relationship about a monopole tower. The main beam direction of the radiation pattern emanating from each antenna may be remotely adjusted in elevation and/or azimut... | 02/14/2006 |
| 6972622 | Optimization of error loops in distributed power amplifiers Several feed-forward RF power amplifiers configured for use in a distributed array, each having a main amplifier within a carrier null loop and an error amplifier within an error loop. Each carrier null loop includes a switch configured to selectively disable the ca... | 12/06/2005 |
| 6943750 | Self-pointing antenna scanning A self-pointing antenna has a reflector, a feed or a sub-reflector and a plurality of support struts coupled between the reflector and the boom arm and supporting the feed or sub-reflector. At least one actuator is operatively coupled with the support struts for adj... | 09/13/2005 |
| 6933908 | Protective cover for satellite dishes A protective cover for satellite dishes includes a rigid mounting plate having a planar top surface provided with an annular notch that is recessed into the mounting plate top surface and a plurality of apertures spaced inwardly of the notch. The cover further inclu... | 08/23/2005 |
| 6933901 | Antenna alignment using a temperature-dependent driver A system having a steerable antenna coupled to a temperature-dependent driver. The driver has a shape-memory element fabricated using a shape-memory alloy (SMA) and having the ability to change its shape as a function of temperature. The element is adapted to steer ... | 08/23/2005 |
| 6934511 | Integrated repeater An integrated repeater includes a housing having opposing sides, a donor antenna mounted on one of the opposing sides, a null antenna mounted on the other of the opposing sides, and repeater electronics mounted in the housing and operatively interconnecting the dono... | 08/23/2005 |
| 6919854 | Variable inclination continuous transverse stub array An antenna array employing continuous transverse stubs as radiating elements is disclosed. In an exemplary embodiment, the array includes an upper conductive plate structure comprising a set of continuous transverse stubs, and a lower conductive plate structure disp... | 07/19/2005 |
| 6914554 | Radar beam steering with remote reflectors/refractors A reflected energy detecting device includes a transmitter for transmitting an electromagnetic signal and a receiver for receiving a reflected electromagnetic signal. An antenna may be operatively connected with the transmitter and the receiver for radiating the ele... | 07/05/2005 |
| 6906681 | Multicarrier distributed active antenna A distributed active antenna includes a power module having a parallel combination of power amplifiers for driving each antenna element of the distributed active antenna. A predistortion linearization circuit may be coupled to each power module to linearize the outp... | 06/14/2005 |
| 6897821 | Spacecraft off-gimbal IRU precision payload pointing and disturbance rejection system An off-gimbal pointing system is improved using filtering of resolver and gyro responses respectively applied at the output of the resolvers and gyros for attenuating high frequencies resolver responses and gyro responses that effectively degrades the high frequency... | 05/24/2005 |
| 6891509 | Antenna assembly An assembly of mechanically steerable directional radio antennas, comprising a primary antenna and at least one secondary antenna, arranged such that the or each secondary antenna is capable of being physically steered over a limited azimuthal arc relative to the pr... | 05/10/2005 |
| 6737938 | Phase shifter, phased-array antenna, and radar A phase shifter includes upper and lower conductive plates, and a dielectric strip sandwiched between the conductive plates, and a plurality of slots formed in the upper conductive plate, thereby forming a dielectric line. A rotator is positioned at either side of t... | 05/18/2004 |
| 6603436 | Antenna control system An antenna control system enabling the remote variation of antenna beam tilt. A drive means continuously adjusts phase shifters of a feed distribution network to radiating elements to continuously vary antenna beam tilt. A controller enables the beam tilt... | 08/05/2003 |
| 6559806 | Motorized antenna pointing device Portable alignment devices for orienting a receiver such as an antenna in a desired elevation and methods for orienting a receiver in a desired elevation orientation. In other embodiments, portable alignment devices for orienting a receiver in a desired e... | 05/06/2003 |
| 6512490 | Portable satellite antenna The present invention relates to a portable satellite antenna which is capable of implementing an accurate horizontal and vertical direction movement of a satellite antenna using a worm gear method and a screw type guide as a horizontal and vertical direc... | 01/28/2003 |
| 6480161 | Motorized antenna pointing device A portable alignment device for orienting an antenna in a desired azimuth orientation and methods for orienting an antenna in a desired azimuth orientation. In one embodiment, the device comprises a portable motor unit that is removably affixed to a porti... | 11/12/2002 |
| 6282434 | Uplink and downlink transmission quality improvement by differentiated base station antenna pattern downtilt In a cellular telecommunications network, a method and apparatus is disclosed for providing a substantial gain in downlink C/I by means of antenna pattern downtilt while still maintaining the coverage limiting signal strength in the uplink by the use of d... | 08/28/2001 |
| 6268827 | Method and apparatus for carrying signals having different frequencies in a space-deployed antenna system The present invention provides a method and apparatus for carrying signals having different frequencies in a space-deployed antenna system. When the antenna system is in a first mode, DC power, command information and RF signals (1) are multiplexed via a ... | 07/31/2001 |
| 6259414 | Scanning apparatus Scanning apparatus which scans input radiation from a scene and output radiation is transmitted to a receiver system, for example a millimetre wave imaging camera or a radar receiver by a rotatable reflective plate having an axis of rotation passing throu... | 07/10/2001 |
| 5969689 | Multi-sector pivotal antenna system and method An omni directional coverage multibeam antenna composed of facets, or antenna modules, that make up a regular polygon of n sides inscribed in a circle of radius r which defines an adjustable composite conical surface. The disclosed antenna modules are ind... | 10/19/1999 |
| 5864320 | Synchronous rotation dual-axis mechanical hinge assemblies Dual-axis hinge assemblies comprising mechanical devices which provide integrated synchronous rotation of a support element, such as a space antenna shaft, attached to a vertical hinge shaft about its own axis while simultaneously pivoting the support sha... | 01/26/1999 |
