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An asymmetric dual-band band-pass filter (DBPF) is proposed for the applications of IEEE 802.11b/g (2.4GHz ∼ 2.48GHz) on the multimode wireless local area networks (WLAN). The high temperature superconducing (HTS) filter was fabricated by pattering YBa2Cu3Oy (YBCO) films double-sided deposited on 20 × 20 mm 2 LaAlO3 substrates with an RF sputtering technique and by putting them in copper housings...