PROJECT TITLE :
A Wideband and Highly Symmetric Multi-Port Parallel Combining Transformer Technology
This paper presents a highly symmetric concentric vortical transformer (CVT) technology, that will be implemented with slab inductors. The CVT and many widely used planar transformer structures are analyzed to indicate the characteristic distinction of the CVT. The proposed CVT was developed in an integrated passive device technology together with the popular distributed active transformer (DAT) for comparison. Under the identical real-half impedance transformation ratio at 2.4 GHz, the outer diameter of the CVT is only 48percent of the DAT. Moreover, eighty nine.4p.c transformation potency and 191% fractional bandwidth are achieved by the CVT from a high coupling coefficient of 0.nine. The symmetric nature of the CVT makes it capable of achieving so much less variation than the DAT in resistance and reactance among multiple input ports when used for power combining.
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