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Patterned Ground Shields For Silicon RFICs Part 4: How Does the Ground Shield Work?
2014-01-08 13:48:00| rfglobalnet Downloads
You might have noticed, in spite of the title of this series, we have discussed the current induced in the RFIC silicon ground rather than the patterned ground shield that designers add to reduce the current in silicon. As I mentioned in Part 1, we must understand our enemy before we can deal with our enemy. We now understand our enemy.
Patterned Ground Shields For Silicon RFICs Part 3: Which Way Does The Current Really Go?
2013-11-18 09:33:36| rfglobalnet Home Page
Everything is so confusing. In Part I of this series, we found that there is something really strange about the current flowing in an Si substrate underneath a spiral inductor. It is flowing perpendicular to the direction of the spiral turns, when we thought it should be flowing parallel to the turns. This is part of a series of guest columns by Dr. James C. Rautio of Sonnet Software, Inc.
ParkerVision Expands Product Portfolio With Introduction Of Three New RFICs
2013-07-05 04:53:53| rfglobalnet Home Page
ParkerVision, Inc. (Nasdaq:PRKR), a developer and marketer of semiconductor technology solutions for wireless applications, today announced the introduction of three new Radio Frequency Integrated Circuits ("RFICs") that address a variety of wireless applications.
Tags: product
introduction
portfolio
expands
ParkerVision Expands Product Portfolio With Introduction Of Three New RFICs
2013-07-05 04:53:53| wirelessdesignonline News Articles
ParkerVision, Inc. (Nasdaq:PRKR), a developer and marketer of semiconductor technology solutions for wireless applications, today announced the introduction of three new Radio Frequency Integrated Circuits ("RFICs") that address a variety of wireless applications.
Tags: product
introduction
portfolio
expands
Patterned Ground Shields For Silicon RFICs Part 2: What Universe Are We In?
2013-05-29 12:56:26| rfglobalnet News Articles
In Part I, we used Sonnet® to investigate the current in the surface of the silicon substrate that is induced by a spiral inductor. Since it is an inductor, we were expecting the substrate current to be induced magnetically. After all, inductors are just little magnets, and we would expect inductively induced current in any nearby conductor. The silicon substrate is a conductor, kind of, right? In addition, the magnetically induced current should flow parallel to (and in the opposite direction of) the current in the spiral inductor. This behavior obeys a special case of Clerk Maxwell’s equations known as Lenz’s Law. This is all, to use American slang, a “slam-dunk”1, hardly even worth checking.