Virtual PC Linux Images and Engineering Linux Distros

Virtual Box and VMware Images http://www.osboxes.org/xubuntu/ https://virtualboxes.org/images/ Engineering and Science Linux Distro http://caelinux.com/CMS/ http://ceeld.weebly.com/downloads.html Fedore Labs https://labs.fedoraproject.org/…

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Antenna Properties & Terminology

This video was made for a junior electromagnetics course in electrical engineering at Bucknell University, USA. The video is designed to be used as the out-of-the-classroom component and combined with active learning exercises in class. This video covers some of the terminology and equations that engineers use to define the properties of antennas. https://www.youtube.com/watch?v=GVYEVhZ-BaE Thank…

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Amplification Power and Voltage Calculator ~ dB dBm Watt Volt Amper

http://www.sengpielaudio.com/calculator-amplification.htm http://www.sengpielaudio.com/calculator-db.htm 3 dB ≡ 1.414 times the voltage (−)3 dB ≡ damping to the value 0.707 6 dB ≡ 2 times the voltage (−)6 dB ≡ damping to the value 0.5 10 dB ≡ 3.162 times the voltage (−)10 dB ≡ damping to the value 0.316 12 dB ≡ 4 times the voltage (−)12 dB ≡ damping to the value 0.25…

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Antenna Video Lecture - courses

http://www.ll.mit.edu/workshops/education/videocourses/antennas/index.html https://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-661-receivers-antennas-and-signals-spring-2003/index.htm https://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-013-electromagnetics-and-applications-fall-2005/ https://ocw.mit.edu/courses/electrical-engineering-and-computer-scienc…

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Why FR-4 Is Often Inadequate for RF Design

Many times, designers want to use FR-4 for RF and microwave circuit designs. After all, it is less expensive than other materials, like Rogers 4350, and much less expensive than reinforced PTFE composite boards such as Rogers RT/Duroid 5870. However, sometimes it is necessary to spend the money for higher quality circuit board material and processing to get good, repeatable designs. In this paper…

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Ultra Wideband Antenna Design for Target Detection

Abstract—In this paper, a four-element microstrip antenna array is presented. The array is composed of Wilkinson power dividers which act as feed network along with Dolph-Chebyshev distribution and fouridentical patch antenna elements. The array elements are properly designed to have a compact size and constant gain against frequency. The simulated results show good agreement with the measured re…

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FR4

https://en.wikipedia.org/wiki/FR-4 FR-4 (or FR4) is a grade designation assigned to glass-reinforced epoxy laminate sheets, tubes, rods and printed circuit boards (PCB). FR-4 is a composite material composed of woven fiberglass cloth with an epoxy resin binder that is flame resistant (self-extinguishing). "FR" stands for flame retardant, and denotes that safety of flammability of FR-4 is in compl…

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