Tunability of microstrip ferrite resonator in the partially magnetized state

Author

Dionne, Gerald F. ; Oates, Daniel E.

Author_Institution

Lincoln Lab., MIT, Lexington, MA, USA

Volume

33

Issue

5

fYear

1997

fDate

9/1/1997 12:00:00 AM

Firstpage

3421

Lastpage

3423

Abstract

A theoretical analysis is presented for a microstrip ferrite resonator of microwave frequency ν_r that is tunable by varying the state of magnetization. Measurements at 8 GHz indicate a 5% tunability range for a magnetic field H <50 Oe. Calculations of ν _r as a function of H are fitted closely to data. Computed performance estimates of a superconducting resonator with an ideal magnetic structure project a remanent-state tunability limit of 25% and an X-band figure of merit of 7000 for a Q factor of 10⁴

Keywords

Q-factor; demagnetisation; ferrite devices; magnetic hysteresis; magnetic microwave devices; magnetic permeability; microstrip resonators; remanence; tuning; 8 GHz; Q factor; X-band figure of merit; demagnetizing factor; hysteresis loops; ideal magnetic structure project; magnetization state variation; microstrip ferrite resonator; microwave frequency; partially magnetized state; reciprocal permeability; remanent-state tunability limit; superconducting resonator; tunability range; Ferrites; Magnetic analysis; Magnetic field measurement; Magnetization; Microstrip components; Microstrip resonators; Microwave frequencies; Q factor; Superconducting magnets; Superconducting microwave devices;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.617964

Filename

617964