Method of fabricating radio frequency microelectromechanical...

Semiconductor device manufacturing: process – Bonding of plural semiconductor substrates – Having enclosed cavity

Reexamination Certificate

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Details

C438S107000, C438S126000, C257S703000, C257S724000, C333S250000, C333S258000, C333S262000, C343S70000R

Reexamination Certificate

active

07045440

ABSTRACT:
A phased-array antenna system and other types of radio frequency (RF) devices and systems using microelectromechanical switches (“MEMS”) and low-temperature co-fired ceramic (“LTCC”) technology and a method of fabricating such phased-array antenna system and other types of radio frequency (RF) devices are disclosed. Each antenna or other type of device includes at least two multilayer ceramic modules and a MEMS device fabricated on one of the modules. Once fabrication of the MEMS device is completed, the two ceramic modules are bonded together, hermetically sealing the MEMS device, as well as allowing electrical connections between all device layers. The bottom ceramic module has also cavities at the backside for mounting integrated circuits. The internal layers are formed using conducting, resistive and high-k dielectric pastes available in standard LTCC fabrication and low-loss dielectric LTCC tape materials.

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