Northrop Grumman Systems Corporation

Trw Limited

Edward V Koretzky

Mark Kintis

Chun-Hong Harry Chen

Alan Cherrette

Flavia S Fong

Kiet D Ngo

David L Brundrett

Dennis M Hall

Douglas S Cockfield

Gregory Hoke Rowan

Juan Rivera

Michael Herndon

Steven S Kuo

Jackson Ng

Derrick M Yamauchi

A dipole antenna comprises N dipole elements spaced along a dimension of the antenna, each dipole element including a pair of electrically conductive structures and 2N electronic networks each coupled to a corresponding electrically conductive structure of an associated dipole element to form N pairs of electronic networks wherein each electronic network includes a port. The electrically conductive structures are electrically isolated from one another.

Antenna having damage and fault tolerability

An apparatus includes: a Global Positioning System (GPS) phased array comprising a plurality of digital beam forming elements (DBFEs), wherein at least one of the DBFEs includes: an antenna configured to transmit a GPS signal; a radio frequency (RF) electronics section operably connected to the antenna and digital electronics sections; and a digital electronics section operably connected to the RF electronics section. An apparatus includes: a GPS phased array comprising a plurality of DBFEs, wherein at least one of the DBFEs includes: an antenna configured to transmit a GPS signal; an RF electronics section operably connected to the antenna and digital electronics sections; and a digital electronics section operably connected an RF electronic section; a navigation encoder and frequency generator (NEFU) unit operably connected to the GPS phased array; and an atomic frequency standard operably connected to the NEFU unit.

Global positioning system phased array using all-digital beam forming and direct digital waveform synthesis methods

An apparatus in one example comprises a differential amplifier and a differential mixer. The differential amplifier is configured to receive a multi-octave differential input signal and output an amplified multi-octave differential output signal. The differential amplifier is also configured to substantially reduce second order harmonic distortion of the amplified multi-octave differential output signal through common mode rejection. The differential mixer configured to multiply the amplified multi-octave differential output signal with a local oscillator input signal and output an up-converted sub-octave differential output signal. The multi-octave differential input signal and the up-converted sub-octave differential output signal comprise a substantially same bandwidth.

Multi-octave differential upconverter

An antenna system and method for transmitting or receiving a plurality of pixel beams of satellite communication signals. A focusing device ( ) focuses pixel beams on individual antenna elements or horns ( or ) of the transmitter ( ) or receiver ( ). In the transmitter, each antenna element transmits a pixel beam, and in the receiver, each antenna element has focused on it an individual pixel beam.

Indirect radiating array techniques

Growing community of inventors

Rancho Palos Verdes, CA, United States of America

Edward V Koretzky