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EM De-Embedding Magic Part 2: Lots Of Ports, All Talking To Each Other!
2014-07-30 22:32:34| rfglobalnet Downloads
By Dr. James C. Rautio, President, CEO, and founder, Sonnet Software, Inc. In part I, I described how I came up with the EM port calibration theory that we have been using very successfully for nearly 30 years. It is so simple. To de-embed a single, lonely port, just EM analyze a 2-port through line of length L, and a second one of length 2L, do some magic math (described in Part I and in [1] and [2]), and we have beautiful, fully de-embedded EM analysis data for that lonely port. (If we have additional lonely ports, just repeat the process for those ports, one at a time, as well.) Central to that calibration and de-embedding procedure is the conversion of S-parameters into ABCD-parameters and back again. We usually measure (or EM analyze) one S-parameter matrix for each frequency of interest. If we are calibrating a single port, our calibration standards (the through lines) are 2-port devices, and our matrix is a complex (i.e., it has real and imaginary parts) 2×2 matrix. We calibrate and de-embed at each frequency, one frequency at a time. Both the S-parameters and the ABCD-parameters that we use for calibration are 2×2 matrices.
Dear Realtor: Stop talking about yourself
2014-07-17 03:15:30| Real Estate - Topix.net
If your idea of a social media strategy is to try to get as many friends and followers as possible, you're doing it wrong.
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yourself
talking
dear
New IoT Group to Get Devices Talking Among Themselves
2014-07-11 15:17:33| TechNewsWorld
Half a dozen companies this week launched the Open Interconnect Consortium to define the connectivity requirements and improve the interoperability of the 200 billion devices that will make up the Internet of Things by 2020. The consortium aims to define a common communications framework based on industry standard technologies, regardless of form factor, operating system or service provider.
Tags: group
themselves
devices
talking
CDC Launches New HIV Campaign 'Start Talking. Stop HIV.'
2014-06-14 07:27:36| Biotech - Topix.net
The Centers for Disease Control and Prevention wants gay and bisexual men to start talking to stop AIDS with a new HIV/AIDS awareness campaign.
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stop
talking
campaign
Why are Ecuadorian oil firms talking about building road into Yasuni-ITT?
2014-06-13 02:44:00| Climate Ark Climate Change & Global Warming Newsfeed
Guardian: The transport of materials will be done by helicopter and by river. That was what Ecuadors Minister for Strategic Sectors, Rafael Poveda, was quoted as saying, in the May 2014 edition of Eco-Americas, about exploiting the Ishpingo, Tiputini and Tambococha (ITT) oil fields in the Yasuni National Park in the Ecuadorian Amazon. Officials promise Petroamazonas [an Ecuadorian state oil company which holds the licence to operate in the ITT fields, called Block 43] will use the latest safeguards,...
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