Сибирский федеральный университет

Тип публикации: статья из журнала

Год издания: 2015

Идентификатор DOI: 10.1109/TMAG.2014.2368513

Ключевые слова: Ferrite, microstrip structure, microwave, tunable phase shifter, Bandpass filters, Bandwidth, Magnetic fields, Magnetic materials, Magnetic permeability, Magnetism, Microwaves, Phase shift, Phase shifters, UHF devices, Active medium, Central frequency, Figure of merits, Microstrip band-pass filter, Microstrip structures, Operational bandwidth, Resonant phase shifters, Tunable phase shifters, Microstrip filters

Аннотация: This paper presents a new type of magnetically tunable phase shifter. The shifter has the structure of microstrip bandpass filter on a substrate containing magnetic material whose magnetic permeability is controlled by magnetic field due to ferromagnetic resonance. The phase shifter's operation is based on the fact that phase shift in a bandpass filter changes with tuning of its central frequency. Two types of devices were designed and fabricated for the UHF band. One of them has a five-layer NiFe film as an active medium and demonstrates a figure of merit of 40 degrees/dB achieved already at 20 Oe of the controlling magnetic field in 10% of the relative operational bandwidth. The second device with YIG ferrite as an active medium gave 360 degrees tunable phase shift in 5% operational bandwidth that corresponds to the figure of merit of 150 degrees/dB (3.1 degrees/dB.Oe).

Журнал: IEEE TRANSACTIONS ON MAGNETICS

Выпуск журнала: Vol. 51, Is. 6

ISSN журнала: 00189464

Место издания: PISCATAWAY

Издатель: IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC

• Belyaev B.A. (Kirensky Institute of Physics, Russian Academy of Sciences)
• Leksikov A.A. (Kirensky Institute of Physics, Russian Academy of Sciences)
• Bal'Va Y.F. (Kirensky Institute of Physics, Russian Academy of Sciences)
• Lemberg K.V. (Siberian Federal University)
• Serzhantov A.M. (Siberian Federal University)
• Belyaev Boris A. (Russian Acad Sci, Kirensky Inst Phys, Krasnoyarsk 660036, Russia)

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