“…In the previous papers [6][7][8][9], this phenomenon was well analyzed and the causes were identified and design rules or various methods for suppressing them were presented. For example, the resistivity [6] of the flip chip carrier, the resonance condition of the cavity [7], the chip mounting design rule [8], and the resistance coating of the lid [10] were investigated. Several modules [1,2,6,11] have been successfully developed to reflect these attempts.…”