Thursday, February 18, 2010

Peregrine Semiconductor - RF CMOS

A fabless provider of high-performance radio frequency integrated circuits, or RFICs. Thier innovation called UltraCMOS makes the integration of multiple RF, mixed-signal, and digital functions on a single chip.

Peregrine Semiconductor - RF CMOS
They provide solutions for WCDMA and GSM digital cellular, broadband, DTV, DVR, and radiation hard space and defense programs.

Peregrine Semiconductor
The products are used in applications like ...

"From GSM cellular handsets, CDMA digital cellular and RIM devices, to CATV/DTV/DVR and other high-growth wireless broadband applications .."

Peregrine's PE97022 is a high-performance integer-N PLL capable of frequency synthesis up to 3.5 GHz. Features a 10/11 dual modulus prescaler, counters and a phase comparator.

TX/RX Signal Chain

TX RX Signal Chain - Peregrine Semiconductor
"The TX/RX portion of the RF signal chain lies between the tuning/switching portion and any sort of power conversion components. This portion of the signal chain has potential for size reduction and increased efficiency...."

Peregrine Semiconductor Corporation
9380 Carroll Park Drive San Diego, CA, 92121 USA

Tuesday, February 16, 2010

Jim Svoboda - Interactive Examples and Exercises

James A. Svoboda - ECE Department, Clarkson University has created numerous interactive examples throughout the textbook - Introduction to Electric Circuits. Interactive Examples made of Java Applets.

Interactive Examples and Exercises - Jim Svoboda

The Interactive Exercise shown here considers a similar, but different, circuit. Like the Interactive Example, the Interactive Exercise poses a problem, then accepts and checks the user's answer. Student learning is further supported by extensive help, in the form of worked example problems, available from within the Interactive Exercise using the “Worked Example” button.

Interactive Examples and Exercises - Jim Svoboda

Circuit Design Lab

The Circuit Design Lab consists of several Java applets, each providing an opportunity to experiment with the design of a particular circuit:

Variations of this problem are obtained using the “New Problem” button. We can peek at the answer using the “Show Answer” button. The Interactive Example and Exercises provide hundreds of addition practice problems with countless variations, all with answers that are checked immediately by the computer. - EDA and Design Notes

Noise Measurement - To accurately measure noise (or high frequency signals) with your oscilloscope it is necessary to reduce the radiated noise that is coupled to your probe. - EDA and Design Notes
The gEDA project is a set of tools for electrical circuit design, schematic capture, simulation, prototyping, and production. The PCB project contains a tool for printed circuit board layout. - EDA and Design Notes

Breadboard Basics from Luciani
John Luciani explains how to prototype a circuit to try out a concept.

Monday, February 01, 2010

Makerbot - 3D Mechanical Prototype Synthesis

The basic setup you'll need to build a plastic extruding CupCake CNC machine. from Bre Pettis
Makerbot - 3D Mechanical Prototype Synthesis

Makerbot is an open source robot that helps people make robots that make things.

Makerbot - 3D Mechanical Prototype Synthesis

"The only fear is that it can Replicate itself" - Ananth  ....When i had posted In Stumbleupon.

MakerBot Industries is a Brooklyn, New York-based company founded in January 2009 by Bre Pettis, Adam Mayer, and Zach "Hoeken" Smith producing 3D printers. MakerBot builds on the early progress of the RepRap Project. - 2013 updated