A low ohmic loss radial superlattice conductor at 15 GHz using eddy current canceling effect

Author

Jiyu Wu ; Yong-Kyu Yoon

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Florida, Gainesville, FL, USA

fYear

2013

fDate

7-13 July 2013

Firstpage

1552

Lastpage

1553

Abstract

A cylindrical radial superlattice (CRS) structure composed of alternating concentric Al/Permalloy layers is proposed for a low loss radio frequency (RF) conductor. The CRS structure utilizes the eddy current canceling effect by alternating permalloy and non-permalloy layers at the targeted frequency. Theoretical and numerical analyses are presented in the cylindrical coordinate system. Comparing with the conventional planar superlattice, the CRS offers a circular and conformal boundary condition, resulting in better analytical and numerical solutions for the suppression of RF conductor loss. Design procedure is provided. With the new CRS structure, RF resistance is reduced by up to 50 % at 15 GHz comparing to its solid conductor counterpart.

Keywords

Permalloy; aluminium alloys; conductors (electric); eddy current losses; numerical analysis; soft magnetic materials; superlattices; Al; CRS structure; Ni₈₀Fe₂₀; Permalloy layers; RF conductor loss suppression; RF resistance; conformal boundary condition; cylindrical coordinate system; cylindrical radial superlattice structure; eddy current canceling effect; frequency 15 GHz; low loss radio frequency conductor; low ohmic loss radial superlattice conductor; nonPermalloy layers; numerical analysis; solid conductor; Conductors; Eddy currents; Permeability; Radio frequency; Resistance; Skin effect; Superlattices;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium (APSURSI), 2013 IEEE

Conference_Location

Orlando, FL

ISSN

1522-3965

Print_ISBN

978-1-4673-5315-1

Type

conf

DOI

10.1109/APS.2013.6711435

Filename

6711435