Northrop Grumman Systems Corporation

Juan Rivera

Mark Kintis

Arun K Bhattacharyya

Steven S Chan

Flavia S Fong

Alan Cherrette

Edward V Koretzky

Gregory Hoke Rowan

Te Kao Wu

Phillip L Metzen

Derrick M Yamauchi

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

A phased array antenna structure capable of operation at millimeter-wave frequencies and having multiple ring slot radiator elements (). The RF feed structure for each radiator element includes a feed via () extending part-way through a multi-layer structure () on which the radiator elements () are formed and a strip line feed probe () extending from the via () toward the radiator element. A key feature facilitating high-frequency operation is the inclusion of multiple mode suppressors () surrounding the via () and providing a smooth transition from a coaxial mode of RF transmission to a strip line mode of RF transmission. The feed probe () is tailored to provide either a narrow-band or a wideband frequency characteristic.

Millimeter wave phased array systems with ring slot radiator element

Growing community of inventors

Torrance, CA, United States of America

Juan Rivera