Hughes Electronics Corporation

Rosemount Aerospace Limited

Brett Warneke

Adele E Schmitz

Robert Y Loo

Juan F Lam

Julia J Brown

Daniel J Hyman

Jonathan James Lynch

Debabani Choudhury

Tsung-Yuan Hsu

Jar Jar Lee

Mehran Mehregany

Stan W Livingston

James A Foschaar

Darren E Atkinson

Jae Lee

A multiband millimeterwave antenna system for communicating signals in multiple frequency bands is disclosed. A main antenna body is connected to antenna extensions by micro-electro-mechanical switches. By opening and closing the switches, the length of the antenna can be altered. The antenna is coupled to a microstrip feed line by an aperture. A series of matching stubs match the impedance of the feed line for the various signal frequencies.

Multiband millimeterwave reconfigurable antenna using RF mem switches

Methods for the design and fabrication of micro-electro-mechanical switches are disclosed. Two different switch designs with three different switch fabrication techniques are presented for a total of six switch structures. Each switch has a multiple-layer armature with a suspended biasing electrode and a conducting transmission line affixed to the structural layer of the armature. A conducting dimple is connected to the conducting line to provide a reliable region of contact for the switch. The switch is fabricated using silicon nitride as the armature structural layer and silicon dioxide as the sacrificial layer supporting the armature during fabrication. Hydrofluoric acid is used to remove the silicon dioxide layer with post-processing in a critical point dryer to increase yield.

Design and fabrication of broadband surface-micromachined

A reconfigurable filter system designed using micro-elecro-mechanical (MEM) switches is disclosed. The filter comprises a transmission line with one or more filter stubs coupled to the transmission line by MEM switches. The impedance of the filter system is altered by selectively opening and closing the MEM switches, which alters the filter characteristics of the filter system. Alternatively, the characteristics of the filter system are altered by using the MEM switches to selectively alter the length of filter stubs attached to the transmission line.

Reconfigurable millimeterwave filter using stubs and stub extensions

Growing community of inventors

Berkeley, CA, United States of America

Brett Warneke