A Distributed Magnetostatic Resonator
arXiv:2401.08911 · doi:10.1109/TMTT.2024.3381549
Abstract
This work reports the design, fabrication, and characterization of coupling-enhanced magnetostatic forward volume wave resonators with significant spur suppression. The fabrication is based on surface micro-machining of yttrium iron garnet (YIG) film on a gadolinium gallium garnet (GGG) substrate with thick gold transducers. A distributed resonator is used to excite forward volume waves in YIG to realize a frequency dependent coupling boost. Fabricated devices at 18 GHz and 7 GHz show coupling coefficients as high as 13 and quality factors above 1000. Higher-order magnetostatic mode suppression is experimentally demonstrated through a combination of transducer and YIG geometry design. An edge-coupling filter topology is proposed and simulated which utilizes this novel distributed magnetostatic resonator.
References in corpus (9)
- Mechanical On-Chip Microwave Circulator
- Thin-Film Lithium Niobate Acoustic Filter at 23.5 GHz with 2.38 dB IL and 18.2% FBW
- Low-impedance superconducting microwave resonators for strong coupling to small magnetic mode volumes
- Strong magnon-photon coupling with chip-integrated YIG in the zero-temperature limit
- Strong On-Chip Microwave Photon-Magnon Coupling Using Ultra-low Damping Epitaxial Y3Fe5O12 Films at 2 Kelvin
- Octave-Tunable Magnetostatic Wave YIG Resonators on a Chip
- Compact tunable YIG-based RF resonators
- An Edge-Coupled Magnetostatic Bandpass Filter
- Cryogenic hybrid magnonic circuits based on spalled YIG thin films