High Performance Compact Microstripline Phase Shifter at C-Band Using Yttrium Iron Garnet

Author

Viswanathan, I. ; Yoon, S.D. ; Sakai, T. ; Geiler, A.L. ; Wang, J.W. ; Chinnasamy, C.N. ; Vittoria, C. ; Harris, V.G.

Author_Institution

Dept. of Electr. & Comput. Eng., Northeastern Univ., Boston, MA, USA

Volume

45

Issue

10

fYear

2009

Firstpage

4176

Lastpage

4178

Abstract

We report the fabrication of planar microstripline reciprocal phase shifter using a bulk Yttrium Iron Garnet (YIG) material. The propagation direction of the microstripline and magnetization direction of the YIG is collinear, and the length of the microstripline and the YIG was 50 mm in length. The proposed design shows large differential phase shifts of 100 degrees for applied magnetic fields varying from 0 to 0.56 times 10⁴ A/m over the frequency range of 1.2 GHz between 5.4 GHz and 6.6 GHz. The average insertion loss, ~ 2.5 dB, was measured to have a 20% bandwidth at 6 GHz. The planar phase shifter presented here demonstrates a compact design, low loss, and an especially large phase shift with a relatively small bias field.

Keywords

garnets; magnetisation; microstrip lines; phase shifters; yttrium compounds; Y₃Fe₅O₁₂; compact microstripline phase shifter; frequency 5.4 GHz to 6.6 GHz; magnetic fields; magnetization; microwave devices; size 50 nm; yttrium iron garnet material; Phase shifters; microstripline; microwave devices; yttrium iron garnet (YIG);

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2009.2024318

Filename

5257199