Abstract
A ferromagnetic tri-disk-coupled (TDC) resonator is constructed by placing three YIG ferrite disks mutually attached on the circular center conductor. The EM fields in one of the disks is described in terms of expanded circular harmonics with an approximated transformation of derivative, and the EM fields in a TDC resonator is synthesized from the respective constituent fields of the disks, by sum-transformation, regarding three eigenjunctures of the TEC resonator. The synthesized fields include coefficients A, B, and D, which are described as functions of the radis ratio r/sub 0//r and azimuthal angle phi . The special case in which A=D=0 is treated. Two conditional equations of perfect Y circulation are calculated. Magnetically tunable operation is theoretically analyzed using the conditional curves, and the magnetically tunable operation is examined experimentally with theoretical analysis.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
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