Agilent Technologies, Inc.

Keysight Technologies, Inc.

Brian Wade Carlson

Dean B Nicholson

Fred Herbert Ives

Donald Ingram

William Hollender

Jonathan Storie

A printed circuit board (PCB) includes a stack of core layers disposed one over another, and electrically conductive interconnects extending vertically in the stack. Each of the core layers includes a substrate having opposite major surfaces, an electrically conductive active trace extending along at least one of the major surfaces, and an indicium. The stack also has an exposed edge where the indicia of the layers are together revealed. The indicia provide identifying and/or fiducial information about the PCB.

Multi-layered printed circuit board having core layers including indicia

By adding light reflective and/or transparent and/or translucent material within a micro-electronic circuit housing, improved light transfer is achieved between a light generation source and a light utilization device. In one embodiment, the reflective material is placed on the inside surface of a non-metallic housing lid and the light from the light source (typically an LED) reflects from the reflective material and impacts the device (typically an FET). In another embodiment, the LED and FET are encased in a clear (low light-loss) material (typically silicone overcoat) so as to allow the light from the LED to reflect from the top of the clear material onto the FET. If desired, an opaque encapsulant surrounds the clear material and fills out the volume within the housing. In another embodiment, clear or translucent (as opposed to opaque) encapsulant can be used to serve dual purpose as both the structural (volume filling, defined package share/outline) agent as well as to permit the internal light transmission and reflections to illuminate the device.

Electronic microcircuit having internal light enhancement

Switchable path length coupler/dividers. Coupler/divider operation over multiple frequency bands is provided by using switchable path lengths. In one implementation, a Wilkinson-style device with switches to select different path lengths and therefore operating frequencies. In a rat-race style device, switches select races of different lengths, and therefore operating frequencies.

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Spokane, WA, United States of America

Brian Wade Carlson