Nov 22, 2012 · The standard rubber duck antenna is basically a shortened ¼-wave vertical antenna. Inside the rubberized cover is a radiating element made out of a wire spring that attempts to make the antenna act like a longer antenna. Shorter antennas will generally be less efficient, which is one disadvantage of the rubber duck.
Have you lost your WiFi antenna? Most antennas can be removed from WiFi cards, making them easy to lose. With a few household supplies, you can make an effective replacement antenna that can get you by until you...
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textbooks on antennas [ 11 and advanced electromagnetics [331. 11. ANTENNA ELEMENTS Prior to World War I1 most antenna elements were of the wire type (long wires, dipoles, helices, rhombuses, fans, etc.), and they were used either as single elements or in arrays. During and after World War 11, many other
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S-parameters for an antenna are introduced. S11 is known as the return loss, or how much power is reflected from the transmitter to an antenna. S21 or S12 represents power coupled from one port to another, a useful parameter for determining coupled power from one antenna to another.
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Oct 22, 2012 · Last summer I built myself a Cobwebb antenna and was fairly pleased with the results. I did think it was a bit heavy and was looking to repeat the build with some lighter weight wire until I came across this article from a well-known antenna buff, G3TXQ. It looked like just the ticket so I copied the design and low and behold after a few ...
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Wire Antennas - Free download as PDF File (.pdf), Text File (.txt) or read online for free. Wire Antennas. Uploaded by. Budi Santoso. Description: Wire Antennas that Works. Long Wire UnUn from Salvaged PC SMPS Toroid Cores. Experimental Study on Multiband Arrow Shape Patch...