Abstract
We propose a novel technique for building YIG film-based resonators and waveguides for high power operating microwave devices. Our approach is based on the effect of total internal reflection (TIR) at the interface between the non-metalized and metalized regions of YIG film, which take place for forward volume magnetostatic spin waves in perpendicularly magnetized YIG films. Prototype resonators and waveguides were designed, fabricated, and tested. The obtained experimental data demonstrate high quality factor of 50 dB and a high power operation up to +15 dBm in the frequency range from 1.8 GHz to 5.1 GHz. Application of such resonators and waveguides in electrically tunable microwave oscillators promises an extremely low phase noises about −135 dB/Hz at 10 kHz offset.
Highlights
Frequency-selective electrically tunable microwave devices are of great interest for different applications
We propose a different technique of forming YIG-film resonators and waveguides of forward volume magnetostatic spin waves (FVMSW) by using the phenomenon of total internal reflection (TIR) at the interface of non-metalized and metalized perpendicularly magnetized YIG films (TIRinterface)
Our waveguides utilized more sophisticated interface with two-side metallization of YIG film (Fig. 2c) and with second metal layer located at distance d1 small enough to affect the dispersion of FVMSW with small k-vectors
Summary
Frequency-selective electrically tunable microwave devices are of great interest for different applications. (Presented 1 November 2016; received 23 September 2016; accepted 12 October 2016; published online 27 December 2016)
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