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Antenna
Amateur Radio
I finally got my hands on an HF transceiver last week. It’s a gently used IC-735, with CW, SSB, AM, and FM on all bands 160-10 meters with the exception of 60 meters. It has had the MARS mo…
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Thank you to Frank Sessink (PA0FSB) for submitting to us his document describing the K9AY loop antenna (pdf), which is the antenna that he successfully uses with his RTL-SDR for HF reception. The antenna combines magnetic (H) and electric (E) field reception in order to create a directive radiation pattern. Frank extends the idea by showing a method that can adjust the directivity electrically with some simple resistor switching. The antenna that I use is for medium wave DX, specially to receive MW from USA here in Europe/The Netherlands. The antenna is a combination of a magnetic loop and a sense antenna for
Radiation of Loop Antennas Near Metallic Bodies of Revolutions (Paperback)
The circular loop antenna is used in a wide range of applications. The performance of the loop antenna is affected by nearby conducting objects, which may be modeled as a body of revolution. The close proximity of such bodies may have a significant effect on antenna properties. Therefore, it is desirable to be able to analyze characteristics of the loop near these bodies to avoid their undesirable effects. On the other hand, it may be desirable to design a structure composed of a loop antenna with a body to improve the antenna performance. This research is dealing with developing a hybrid procedure that can be used to study the radiation and scattering problem of a thin wire circular loop antenna placed coaxially relative to a conducting body of revolution. The solution of the problem is based on the application of the EFIE formulation, the numerical Green’s function approach for bodies of revolution and the well known theory of thin wire circular loop antennas. The technique introduced in this study should help graduates students, researchers in the field of antennas, and antenna designer to analyze and design a loop/body antenna in a unified approach with a wide range of choices. Radiation of Loop Antennas Near Metallic Bodies of Revolutions (Paperback)
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Abstract background with moving
Abstract background with moving digital glowing lines represent concept of fiber optic cable. Abstract microwave halo pattern background,disco backdrop,signaling communications information,optical,neon lights science, technology,future radiation energy scanning detection analysis. Seamless loop animation
