Abstract: The paper presents a hybrid Log periodic dipole array (LPDA)-Yagi antenna. The LPDA radiator is used as a driven element and is loaded with parasitic elements along both ends which form the ...

Abstract: The balanced conical logarithmic-spiral antenna is considered as a slow-wave locally periodic structure with a slowly varying period. A study of the near fields and their relationship to the ...

I had an interesting conversation with a buddy the other night when I mentioned using a TV antenna. He laughed and said, “I thought you were serious for a minute.” I was serious. I have TV antennas ...

The idea is that one end of the probe is connected to both a spectrometer and a light source and the other end is inserted into a fluid or biological specimen. Changes in the spectrum of the light ...

This will create a file, sfclogs.txt, on your desktop. Double-click on it to open the file with Notepad and read the file. You will see “SR” written in front of ...

I had an interesting conversation with a buddy the other night when I mentioned using a TV antenna. He laughed and said, “I thought you were serious for a minute.” I was serious. I have TV antennas ...

Will Kenton is an expert on the economy and investing laws and regulations. He previously held senior editorial roles at Investopedia and Kapitall Wire and holds a MA in Economics from The New School ...

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In the temporarily occupied territories of Ukraine, Russian authorities are actively promoting Russkiy Mir satellite kits, replacing Ukrainian equipment and restricting residents’ access exclusively ...

If you enjoyed this article, I’d like to ask for your support. Scientific American has served as an advocate for science and industry for 180 years, and right now may be the most critical moment in ...