Magnetic Dipole

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• Dipole Antennas and Wire Antennas
  variations of wire antennas or dipoles are available. These include straight wire or simple dipole; folded dipole; coil; magnetic dipole or loop (circular, square, ellipse, rhombus, fan, eggbeater, rabbit ear, etc.); inverted L, V, or F antennas; turnstiles or crossed dipoles, vertically-polarized...
• Low Frequency Magnetic Transmitter Design
  , or a magnetic dipole. One also only gets. magnetic dipoles and not monopoles, as is the case for. electrical particles. A magnetic field can, therefore, be. An antenna approaching this dimension is impractical,. represented by field lines that form continuous loops. but at 500 MHz the wavelength is only 60...
• Low-Frequency Magnetic Transmitter Design (.pdf)
  between a mag-. netic field/electric field versus an electromagnetic. c. =. [meters]. wave. A magnetic field is a result of electrical charge. in motion, or a magnetic dipole. One also only gets. c = 3 x 108 m/s. magnetic dipoles and not monopoles, as is the case for. electrical particles. A magnetic...
• Magnetic Treatment of Diesel Fuel
  charge distributions are a source of magnetic dipole moments, making these compounds receptive to manipulation in a magnetic field. Phenomena associated with polar molecules are described by Professors George Mushrush, of George Mason University, and James Speight, of Western Research Institute, who...
• Fundamentals of EM waves
  known as the Fresnel zone or Fresnel region. In the quasi-static near field we see fields that strongly resemble the electrostatic fields of a charge dipole for a dipole antenna and the fields of a magnetic dipole for a loop antenna. In large antennas the quasi-static field can be seen near edges...
• Antenna Circuit Design
  °. that falls off with r-3. This type of antenna is called a. 2 = 0°. magnetic dipole antenna. Equation 1 can be rewritten as: For 13.56 MHz passive tag applications, a few. microhenries of inductance and a few hundred pF of. EQUATION 2: resonant capacitor are typically used. The voltage. transfer between...
• Matching Small Loop Antennas to rfPIC(TM) Devices
  In close proximity to the human body, small loop antennas outperform small dipole and monopole antennas [1]. Their size, robustness and low manufacturing cost have made small loops the most popular antenna for use in miniature key fob transmitters. A small loop antenna typically consists...
• The Basics of Electromagnetic Clutches and Brakes
  sin (u)/r2. where I = net current, r = displacement vector from the coil to the point at which we want to know the magnetic field, u = angle between the vector and a current element dl, and 0 = magnetic moment of the dipole. For instance, a 90-V clutch, a 48-V clutch, and a 24-V clutch, all powered...
• RFID Coil Design
  . Alternatively, a small loop antenna coil that is resonating at the frequency of the interest (i.e., 125 kHz) is used. This type of antenna utilizes near field magnetic induction coupling between transmitting and receiving antenna coils. RFID Coil Design M. AN678. RFID Coil Design. REVIEW...
• Medical Device Link .
  . This is critical to their success as labels for separation or analyte detection. If the individual particles possessed a remnant magnetic field, each particle would act as a small dipole magnet, resulting in aggregates or chains as well as destabilization and precipitation of the colloid. To have...

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