| Patent Number |
Title Of Patent |
Date Issued |
| 7414591 |
Helical antenna system |
August 19, 2008 |
| An antenna system includes a helical antenna that includes one or more helically shaped conductors. Each conductor is substantially embedded in a dielectric structure. |
| 7379030 |
Artificial dielectric antenna elements |
May 27, 2008 |
| 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 constant. The artificia |
| 7352336 |
Directive linearly polarized monopole antenna |
April 1, 2008 |
| A directive monopole antenna element with good RF performance (e.g., directivity and cross-polarization) and a low assembly cost is provided. The directive monopole antenna includes a dielectric support structure and one or more conductive directors coupled to the support structure. |
| 7286099 |
Rotation-independent helical antenna |
October 23, 2007 |
| A helical antenna having a central axis defined between a base end and a distal end comprises a helical conductor wound about the central axis and having a feed line disposed at the base end and along the central axis, and may also include an elongated dielectric core about which the |
| 7050019 |
Concentric phased arrays symmetrically oriented on the spacecraft bus for yaw-independent naviga |
May 23, 2006 |
| A concentric arrangement of multiple spacecraft antennas mounted symmetrically about the yaw axis of rotation or center of gravity of the spacecraft that provides the capability for spacecraft with multiple antennas to maneuver without introducing errors into navigation signals and w |
| 6992639 |
Hybrid-mode horn antenna with selective gain |
January 31, 2006 |
| The present invention provides a new class of hybrid-mode horn antennas. The present invention facilitates the design of boundary conditions between soft and hard, supporting modes under balanced hybrid condition with uniform as well as tapered aperture distribution. In one embodiment, |
| 6831600 |
Intermodulation suppression for transmit active phased array multibeam antennas with shaped beam |
December 14, 2004 |
| Methods and apparatus are provided for determining aperture phase distributions for use in radiating signals with an active phased array antenna having multiple beams and multiple carriers. Distinct initial phase distributions corresponding to the carriers are allocated. The initial |
| 6703976 |
Scaleable antenna array architecture using standard radiating subarrays and amplifying/beamformi |
March 9, 2004 |
| A phased array antenna design that is modular and scaleable in terms of beam quantity, coverage area, and receive sensitivity/transmit EIRP. A modular array building block for an antenna array comprises: a plurality of antenna elements, each antenna element operable to receive and output |
| 6642883 |
Multi-beam antenna with interference cancellation network |
November 4, 2003 |
| A means and method to increase the beam traffic capacity, especially in high user density regions, of a multi-beam antenna communication system with multiple signals at any frequency transmitted (received) when in a transmit (receive) mode by canceling interference with neighboring s |
| 6573873 |
Stepped horn with dielectric loading |
June 3, 2003 |
| A horn for direct radiation or for use as a reflector feed is for operation at disparate frequencies. The horn has a conventionally LSE.sub.1,0 distribution at the lower of the two frequencies, and both LSE.sub.1,0 and LSE.sub.3,0 modes, phased for improved gain, at the higher frequency. |
| 6507315 |
System and method for efficiently characterizing the elements in an array antenna |
January 14, 2003 |
| A system and method to individually characterize all of the antenna elements or amplifiers in an array antenna system simultaneously, without the need to perform sequential measurements. A positioning device allows movement of the antenna with respect to a calibration probe or movement o |
| 6411256 |
Reduction of local oscillator spurious radiation from phased array transmit antennas |
June 25, 2002 |
| The present invention is a system and method for reducing the transmission of spurious radiation produced by local oscillators (LOs) in a spacecraft-based phased array antenna. The spurious radiation is reduced by spreading a substantial portion of the radiation outside of the earth |
| 6407722 |
Choke coupled coaxial connector |
June 18, 2002 |
| A choke coupled coaxial connector includes a hybrid transmission line center conductor including an open-circuited transmission line having one-quarter electrical wavelength, which presents an effective short-circuit at a gap in the center conductor structure. The choke coupled conne |
| 6239762 |
Interleaved crossed-slot and patch array antenna for dual-frequency and dual polarization, with |
May 29, 2001 |
| A crossed-slot antenna in a first ground plane has a first feed, in stripline form including a second ground plane, which underlies a portion of one of the orthogonal slots for exciting a first polarization. A conductive lip of the other slot extends through the plane of the first fe |
| 6163296 |
Calibration and integrated beam control/conditioning system for phased-array antennas |
December 19, 2000 |
| A near-field calibration arrangement for an antenna array determines the phase shifts or attenuation of the elemental control elements of the array. The calibration system includes a probe located in the near field, and a calibration tone generator. The tone generator is coupled to the |
| 6084545 |
Near-field calibration system for phase-array antennas |
July 4, 2000 |
| A near-field calibration arrangement for a phased-array antenna determines the phase shifts or attenuation of the elemental control elements of the array. The calibration system includes a probe located in the near field, and a calibration tone generator. The tone generator is coupled to |
| 4783665 |
Hybrid mode horn antennas |
November 8, 1988 |
| A horn antenna with a cylindrical and an expanded (horn-shaped) waveguide for radiating or receiving polarized electromagnetic waves. The waveguide wall is partially or wholly covered with one or more grids (12) of electrical conducting material with dielectric layers between them. One |
