A study on transducer type isolator using YIG single crystal
- Resource Type
- Conference
- Authors
- Okubo, Kensuke; Tsutsumi, Makoto
- Source
- 2008 Asia-Pacific Microwave Conference Microwave Conference, 2008. APMC 2008. Asia-Pacific. :1-4 Dec, 2008
- Subject
- Components, Circuits, Devices and Systems
Engineered Materials, Dielectrics and Plasmas
Fields, Waves and Electromagnetics
Aerospace
Communication, Networking and Broadcast Technologies
Photonics and Electrooptics
Transducers
Isolators
Transmission line measurements
Magnetic field measurement
Insertion loss
Bandwidth
Loss measurement
Magnetic analysis
Finite element methods
Frequency response
- Language
- ISSN
- 2165-4727
2165-4743
A transducer type isolator using tangentially magnetized YIG single crystal was proposed. Frequency response of scattering parameters and field distribution were calculated and optimized by using HFSS simulator. Experiments were undertaken using a single crystal of YIG slab, and measured results corresponded well to the numerical results. Isolation ratio of 48 dB with 6 dB insertion loss and 880 MHz bandwidth around 4.2 GHz was measured. Characteristics using CRLH-TL transducers were also investigated and isolation ratio of 48 dB with 5.5 dB insertion loss and 2.0 GHz bandwidth (from 3.85 GHz to 5.85 GHz) was measured. Proposed isolator has potential for high dynamic isolation ratio and wideband operation. It may be developed more with careful design of capacitive and inductive loadings of the CRLH structure.