Microwave Response of Gd-Doped YIG Based Y-Junction Stripline Circulator for Use at Very High Frequencies

Abstract:

This study aimed to evaluate Fe₂O₃ based magnetic ferrite performance and its composition using Rare Earth Oxide (REO) of Yttrium as dopant and Gadolinium as co-dopant elements. Lot of specimens were prepared through dry pressing technique, and sintered into the high temperature tube furnace up to 1450°C. Sintering duration of 5 hours results the best magnetic properties. The existence of Gadolinium element tends to improve magnetic properties of magnetic ferrite Gd-doped YIG structure. Remacomp brand Magnet-Physik was used to determine the characteristics of soft magnetic materials in the measurement frequency range of 10 Hz to 70 kHz. Microwave response was measured using the Vector Network Analysis to provide insertion loss and isolation data. The obtained insertion loss of Gd_0.75Y_2.25Fe5O₁₂ is 0.4270 dB (at 3.7 GHz) and 0.2455 dB (at 4.2 GHz), while the isolation value is 11.3840 dB (at 3.7 GHz) and 17.8250 dB (at 4.2 GHz). The further experiment will be carried out to improve the microwave response and better magnetic properties of Gd-doped YIG structure.

• Periodical: Key Engineering Materials (Volume 855)
• Pages: 274-279
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.855.274
• Online since: July 2020
• Authors: Handoko Subawi*, Syoni Soepriyanto
• Keywords: Gd-Doped YIG, Insertion Loss, Microwave Response, Soft Ferrite

References

[1] Y. Xing, T.S. Rappaport, Propagation measurement system and approach at 140 GHz–moving to 6G and above 100 GHz, IEEE Global Communications Conference, Abu Dhabi. (2018) 1-6.

DOI: 10.1109/glocom.2018.8647921

[2] E.B. López, F.S.S. Jesús, C.A.C. Escobedo, A.B. Pingarrón, A.M.B. Miró, Enhancement in Curie temperature of Yttrium Iron Garnet by doping with Neodymium, Materials. 11 1652 (2018).

DOI: 10.3390/ma11091652

[3] L. Aditya, A.K. Jain, R.S. Shinde, Development of microwave ferrites and garnets for prototype ferrite circulators at 352 MHz & 700 MHz, Indian Particle Accelerator Conference. Indore, India. (2010).

[4] V.G. Harris, Modern microwave ferrites, Advances in Magnetics, IEEE Transactions on Magnetics. 48 3 (2012) 1075-1104.

DOI: 10.1109/tmag.2011.2180732

[5] D.H. Martin, R.J. Wylde, Wideband circulators for use at frequencies above 100 GHz to beyond 350 GHz, IEEE Transactions on Microwave Theory and Techniques. 57 1 (2009).

DOI: 10.1109/tmtt.2008.2008955

[6] TDK, Ferrite Magnets-FB Series, Basic Physical Properties of Ferrite Magnets, Product Guide, Nihonbashi, Tokyo, Japan. (2014).

[7] J. Wu, Planar Tunable RF/Microwave devices with magnetic, ferroelectric and multi-ferroic materials, Dissertation, Northeastern University Boston, Massachusetts. (2012).

[8] T.T.K. Nga, D.S. Lee, S.J. Kim, M. Lee, K.C. Hwang, Y. Yang, K.Y. Lee, SPDT switch with body-floating technique and ultra-small active matching network using on-chip solenoid inductor for BLE applications, Electronics. 7 297 (2018).

DOI: 10.3390/electronics7110297

[9] A.S. Tatarenko, M.I. Bichurin, Microwave magneto electric devices, Advances in Condensed Matter Physics, ID 286562. (2012).

[10] M.A. Popov, I.V. Zavislyak, G. Srinivasan, A magnetic field tunable yttrium iron garnet millimeter-wave dielectric phase shifter: theory and experiment, Progress in Electromagnetics Research C. 25 (2012) 145-157.

DOI: 10.2528/pierc11101409