TFS173A Datasheet, PDF (5/5 Pages) Vectron International, Inc – Filter Specification

tfs173A.doc
VI TELEFILTER
Filter Specification
Version 1.5
TFS 173A
01.08.2001
5/5
7. History :
Version
Reason of Changes
Name
Date
1.0
Generate preliminary development specification
according to customer requirements.
Dunzow W.
15.02.2001
1.1
- change band widths ;
- change centre frequency ;
- change definition of centre frequency ;
- change filter name .
Dunzow W.
02.03.2001
1.2
- add amplitude ripple in PB (p-p) : max. 1 dB;
- change frequencies of selection tolerances :
from f3dB± ± 1,325 MHz to f3dB± ± 1,3 MHz and
from f3dB± ± 5,325 MHz to f3dB± ± 5,0 MHz
Dunzow W.
05.03.2001
1.3
- change amplitude ripple in PB (p-p) :
Dunzow W.
06.06.2001
from max. 1 dB to max. 1,5 dB;
- change configuration of matching network ;
- add typical values of measured termination impedances;
- add typical values of filter ;
- change selection tolerances :
in f3dB± + 1,0 MHz ... f3dB± + 1,3 MHz from min. 30 dB to min. 28 dB;
in f3dB± + 1,3 MHz ... f3dB± + 2,0 MHz from min. 35 dB to min. 28 dB;
in f3dB± + 2,0 MHz ... f3dB± + 5,0 MHz from min. 35 dB to min. 34 dB;
in f3dB± + 5,0 MHz ... f3dB± +17,5 MHz from min. 45 dB to min. 35 dB;
in f3dB± - 17,5 MHz ... f3dB± - 5,0 MHz
in f3dB± - 5,0 MHz ... f3dB± - 2,0 MHz
in f3dB± - 2,0 MHz ... f3dB± - 1,3 MHz
in f3dB± - 1,3 MHz ... f3dB± - 1,0 MHz
from
from
from
from
min. 45 dB to min. 42 dB;
min. 35 dB to min. 34 dB;
min. 35 dB to min. 29 dB;
min. 30 dB to min. 29 dB;
1.4
- add typical values of band widths at ambient temperature ;
Dunzow W.
18.07.2001
- add Stability characteristics ;
- write limit lines as in Filter Spec. version 1.2 ;
- change ILo : from max. 30 dB to max. 28 dB ;
- change group delay ripple : from max. 180 ns to max. 120 ns ;
- change tolerance for centre frequency at ambient temperature : from ± 100 kHz to ± 150 kHz.
1.5
- correct typical values of band widths at ambient temperature ;
Dunzow W.
01.08.2001
- add commentary about matching networks.
- change ( reduce) tolerance for centre frequency :
from 174,20 ± 0,15 MHz ( 174,05...174,35 MHz) to 174,05...174,30 MHz.
- change point 3 in “Stability characteristics”.
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267 Lowell Road
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