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In this paper, two kinds of processes in organic substrate are adopted for the evaluation of diplexer. First, the heterogeneous organic material system with FR-4 for low-k and BT for high-k is applied for GSM/DCS dualband diplexer and as a result the size decreases by 65% in the comparison with that of homogeneous material system within maintaining the performance of diplexer. This method of using...
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