In this paper, electromagnetic (EM) leakage and spurious resonances in a K/Ka-Band (18-40 GHz) MMIC hermetic package designed for a phase shifter chip are studied using the finite element method (FEM) and the numerical simulation results are compared with the measured data. Both the measured and calculated data indicate several spurious resonances in the 18-24 GHz region and the origin of this phenomenon is identified by virtue of the modeling capability of the FEM. Moreover, the effect of dc bias lines, bond wires, shielding, and the asymmetry of the package on electrical performance are closely examined. In addition, the effect of adding a resistive Coating to the inside surface of the package lid and also the use of dielectric packaging materials with very high loss tangent are studied in view of the suppression of the spurious resonances. Finally, design guidelines for the improved package are presented.
|Number of pages||8|
|Journal||IEEE Transactions on Microwave Theory and Techniques|
|Issue number||12 PART 2|
|Publication status||Published - 1996|
Bibliographical noteFunding Information:
Manuscript received March 27, 1966. This work was supported in part by NASA Lewis Research Center under Grant NAG-1807, NSF Grant CDA-92-14 296, and the Ford Motor Company. J.-G. Yook and L. P. B. Katehi are with the Radiation Laboratory, Department of Electrical Engineering and Computer Science, The University of Michigan, Ann Arbor, MI 48109-2122 USA. R. N. Simons is with the NASA Lewis Research Center, NYMA Group, Cleveland, OH 44135 USA. K. A. Shalkhauser is with the NASA Lewis Research Center, Cleveland, OH 44135 USA. Publisher Item Identifier S 0018-9480(96)08544-4.
All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
- Electrical and Electronic Engineering