A small magnetic loop antenna has been studied for underground operation in 920-MHz band considering the application of underground-to-aboveground communications. The antenna has two radiating loops ...

Abstract: A small magnetic loop antenna has been studied for underground operation in 920-MHz band considering the application of underground-to-aboveground communications. The antenna has two ...

An accurately calibrated and sensitive antenna is needed for such work. This White Paper looks at the characterisation of magnetic loop antennas — those sensitive to the magnetic component of an ...

Magnetic loop antennas are great if you are limited on space since they are just a potentially small loop of wire. The problem is, they are sharply tuned. You normally have an adjustment capacitor ...

Star 7 Code Issues Pull requests Magnetic loop antenna Arduino controller and 3d printed high voltage sliding capacitor ham-radio amateur-radio antenna capacitor hf hf-antenna magloop varicap variable ...

Magnetic loop antenna capacitor controller based on Arduino Nano L298N stepper driver EM-290 stepper from Epson printer HC-06 bluetooth serial controller for remote control 3d printed slide capacitor ...

Also, no expensive vacuum variable or heavy-duty rotary capacitors required. This presentation was made at the QSO Today Virtual Ham Expo. For more information go to: https://qsotodayhamexpo.com Also ...

Aperture tuning optimizes the total antenna efficiency from the antenna terminal’s free space, and it can do so across multiple bands. It can provide advantages with respect to antenna efficiency for ...

Most magnetic loop antennas in the 100 Watt + category use a variable vacuum capacitor. This is the best choice if you don't mind that these are expensive, big and heavy, fragile, and "made in Russia" ...

This article was written by Louis Frenzel, author of Principles of Electronic Communications Systems, that addresses this topic and much more. Antennas are much more than simple devices connected ...