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的難點(diǎn)估計(jì)比較充分。2周8答辯1周 參考文獻(xiàn)[1], . Hairpinline and hybrid hairpinline/halfwave parallelcoupled fiters[J]. IEEE Theory Tech,1972,3(20):719~728[2], , . Miniaturized hairpin resonator filters and Their application to receiver frontend MIC’s[J]. IEEE Trans. Microwave Theory Tech,1989,4(37):1991~1997[3], , , et hairpinb filters for HTS and other applications[J]. IEEE MTTS Dig,1996,2(10): 457~460[4]JiaSheng Hong, . Crosscoupled microstrip hairpinresonator filters[J]. Microwave Theory Tech,1998,46(l):118~122[5]JiaShen Hong , . Design of Highly selective microstrip bandpass filters with a single pair of attenuation poles at finite frequencies[J]. Microwave Theory Tech,2000,48(7):1098~1107[6]ChengChun. Miniaturized microstrip crosscoupled filter using quarterwave or quasiquarterwave resonator[J]. Microwave Theory Tech,2003,51(l):120~131[7], , et al. Multiplecoupled microstrip hairpinresonator filter[J]. Microwave and Wireless