Sam-Luca J.D. Hansen1, Markus W. May1, Mirsad Mahmutovic1, Manisha Shrestha1, Anpreet Ghotra1, Matthäus Poniatowski1, and Boris Keil1
1Institute of Medical Physics and Radiation Protection, TH Mittelhessen University of Applied Sciences, Gießen, Germany
1Institute of Medical Physics and Radiation Protection, TH Mittelhessen University of Applied Sciences, Gießen, Germany
A highly efficient B1+-to-SAR dipole antenna for ultrahigh-field MR was
evaluated which consists of a double-folded ladder structure. The antenna has a
high impedance which provides low mutual coupling between other antenna elements.
a) geometry of the double-folded dipole antenna and the circuit diagram of the LC lattice balun matching network, b) simulation geometry, c) constructed double-folded dipole antenna with LC lattice balun matching network
Comparison
of the safety excitation efficiency profiles along the X axis (Z=0cm) between the plain dipole, fractionated dipole, and the double-folded dipole with 20mm, 30mm, 40mm and 50mm gap for the depths Y=0cm, Y=5cm, Y=10cm and Y=15cm