Design and Development of a Tunable Ferroelectric Microwave Surface Mounted Device
نویسندگان
چکیده
منابع مشابه
Ferroelectric Thin Films for Tunable Microwave Applications
Modern wireless communication systems are based on microwave technologies. Ferroelectric devices with the electric field dependent dielectric properties and low dielectric losses at microwave frequencies are very promising. Capacitance tunability nc, defined as the ratio of the capacitance at zero applied bias voltage to the capacitance at some desired applied voltage, is the key functional pro...
متن کاملDesign, Optimization and FEM Analysis of a Surface-Mounted Permanent-magnet Brushless DC Motor
In this paper a fast analytical algorithm for design a surface-mounted PM Brushless DC motor (SMPM-BLDC) for variable-speed application based on electromagnetic field analysis and RSM optimization algorithm is discussed. To achieve the desired performance, the physical dimensions of the proposed SMPM-BLDC motor subject to minimal ripple torque utilizing RSM optimization algorithm were optimized...
متن کاملDesign and Fabrication of a Microwave Weed Killer Device for Weed Control Applications
In this paper, the design and the results of a microwave radiation system for agriculture applications is discussed. The system is fabricated and successfully tested on weed seeds. The device, which uses a commercial 1 kW magentron, proved to be effective for preventing the germination control of popular weeds of Iran. Seven weed species were tested separately by using this system and then the ...
متن کاملImproved designs of tunable ferroelectric capacities for microwave applications
Epitaxial SrTiO3 films are deposited by on-axis magnetron sputtering on CeO2-buffered r-cut sapphire. The ferroelectric films possess low losses ~e.g., tan d'0.001– 0.004 at 300 K! and a large tunability at small electric fields. Different complex designs for ferroelectric capacities are prepared via dry etching ranging from standard designs to those in which the ferroelectric material is restr...
متن کاملDual-tunable hybrid wave ferrite-ferroelectric microwave resonator
A novel electric and magnetic field tunable microwave resonator with a yttrium iron garnet and barium strontium titanate layered structure is investigated. The measured characteristics at 3.6 GHz, corresponding to the proximity of magnetic and dielectric resonance modes, show a broadband electrical tunability. A tuning range of 1.5% of the central resonance frequency is obtained for nominal ele...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
سال: 2020
ISSN: 0885-3010,1525-8955
DOI: 10.1109/tuffc.2020.2986227