TFS71H Datasheet, PDF (1/5 Pages) Vectron International, Inc – Filter specification

File name: Tfs71H.doc
VI TELEFILTER
Filter specification
version 1.1
TFS 71H
11.01.2002
1/5
1. Measurement condition :
Ambient temperature T_A:
Input power level:
Terminating impedances in fc *) :
25 °C
0 dBm
for input:
for output:
440 Ω  - 29,12 pF.
450 Ω  - 33,11 pF.
2. Characteristics
Remark: Reference level for the relative attenuation arel of the TFS 71H is the minimum of the pass band attenuation amin. The minimum of
the pass band attenuation amin is defined as the insertion loss ae. The centre frequence fc is the arithmetic mean value of the upper and lower
frequencies at the 3,75 dB filter attenuation level relative to the insertion loss ae. The nominal frequency fN is fixed on 71,100 MHz without
tolerance. The given values for the relative attenuation arel and for the group delay ripple have to be reached at the frequencies given below also
if the centre frequency fc is shifted due to the temperature coefficient of frequency TCf in the operating temperature range and due to a production
tolerance for the centre frequency fc. All specified values are guarantied in operating temperature range.
Data
Insertion loss (Reference level)
ae
Nominal frequency
Centre frequency
fN
fc at ambient temperature (f_CTA)
typ. value
16
dB
71,110 MHz
tolerance / limit
max. 17
dB
71,100
MHz
Pass band
Amplitude ripple (p-p) in
PB
fN _.... fN ± 500 kHz
0,5 dB
fN - 525 kHz ... fN + 525 kHz
Bandwidth :
1 dB
1,5 dB
3,0 dB
3,75 dB
25 dB
40 dB
45 dB
50 dB
1120
1150
1205
1215
1445
1520
1540
1555
kHz
kHz
kHz
MHz
MHz
kHz
kHz
kHz
min. 1050 kHz
min. 1180 kHz
max. 1500 kHz
max. 1800 kHz
Relative attenuation
arel
fN _...... fN ± 525 kHz
fN ± 525 kHz .... fN ± 590 kHz
fN ± 750 kHz .... fN ± 900 kHz
fN ± 900 kHz .... fN ± 40 MHz
-
-
32
dB
55
dB
max.
max.
min.
min.
1 dB
3,75 dB
25 dB
45 dB
Group delay ( mean value in PB ):
Group delay ripple in PB (p-p):
Deviation from linear phase (p-p) in
Deviation from linear phase ( r.m.s.) in
fN _.... fN ± 630 kHz
fN _.... fN ± 630 kHz
Input/Output return loss with matching network (S11/S22):
7,1 µs
550
ns
6°
1,6°
9...12 dB
6,0 .... 7,75 µs
max.
1 µs
max.
min.
2 degree
8 dB
Frequency inversion temperature ( T_o ) :
Temperature coefficient of frequency ( Tc_f ) :
Frequency deviation of fc over temperature: ** )
20...30 °C
- 0,036 ppm/K²
∆fc(Hz) = Tc_f(ppm/K) x (T - T_o)² x f_To (MHz)
Operating temperature range ( OTR ) :
Storage temperature range :
0 °C ... + 85 °C
- 30 °C ... + 85 °C
*) The terminating impedances depend on parasitics and q-values of matching elements and the board used, and are to be understood as
reference values only. Should there be additional questions do not hesitate to ask for an application note or contact our design team.
**) f_To is reference frequence fc at frequency inversion temperature (T_o )
Generated:
Wadim Dunzow
Checked/Approved:
Dr. Bert Wall
VI TELEFILTER
Potsdamer Straße 18
D 14 513 TELTOW / Germany
Tel: [phone] / Fax: [phone]
Vectron International, Inc.
267 Lowell Road
Hudson, NH 03051 / USA
Phone: [phone] Fax: [phone]
E-mail: [e-mail]
e-mail: [e-mail]
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