2025-03-27https://repository.covenantuniversity.edu.ng/handle/123456789/34063Exp.erim.entaI results on the magnetostatic surface wave resonance characteristics of planar yttnu~ Iron garnet resona.tors are given. Single-mode resonance with wide tunability range and hIgh Q have been achIeved. Q as high as 3500 and insertion loss as low as 13 dB with offresonance rejection as high as 15 dB have been achieved at 6 GHz. A microwave oscillator built with the resonators and a laboratory-made hybrid amplifier provided oscillations in the range 3-:-5.3 GHz with phase noise of - 105 dBc/Hz at 10 KHz offset/rom the carrier frequency.application/pdfQ Science (General), QC PhysicsArticle