140 mhz bandpass saw filter phone: +86 (10) 5128 1211 fax: +86 (10) 5820 3915 email: sales@vanlong.com web: http://www.vanlong.c om february 26, 2003 vanlong technology co., ltd. 140 mhz bandpass saw filter 1.6 mhz bandwidth electrical characteristics parameter sym minimum typical maximum unit center frequency at 25 c fc 139.95 140 140.05 mhz insertion loss at fc il - 24.06 25.0 db 1 db bandwidth bw 1 - 1.34 - mhz 3 db bandwidth bw 3 1.60 1.61 - mhz 40db bandwidth bw 40 - 2.68 2.70 mhz passband variation - - 0.3 1.0 db absolute delay - - 2.23 - sec ultimate rejection - 45 50 - db substrate material - - quartz - - ambient temperature ta - 25 - c typical performance package outline matching configuration l1 : 68 nh, l2 : 220 nh l3 : 68 nh nominal source/load impedance : 50 ? BP62330 137 138 139 140 141 142 143 -100 -90 -80 -70 -60 -50 -40 -30
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