Dual-tunable multiferroic active ring filter for microwave photonic oscillators

[摘要] A theoretical model of a microwave active ring filter based on a ferrite-ferroelectric layered structure serving as a waveguide for spin-electromagnetic waves is developed. An experimental prototype of the device is fabricated and characterized. The device is implemented as an active-ring resonator with a microwave amplifier and a ferrite-ferroelectric delay line. The resonance properties of this system are studied theoretically and experimentally. The results show dual control of central frequency of the filter with magnetic and electric fields. An effective Q-factor of 50 000 and tuning by 5 MHz with an electric field are achieved at 8 GHz.

[发布机构] St. Petersburg Electrotechnical University, St. Petersburg; 197376, Russia^1

[效力级别] 天文学 [学科分类] 天文学(综合)

[关键词] Central frequency;Experimental prototype;Layered Structures;Magnetic and electric fields;Microwave Photonics;Multiferroics;Ring resonator;Theoretical modeling