TFS140M Datasheet, PDF (1/5 Pages) Vectron International, Inc – Filter specification

File name: Tfs140M.doc
VI TELEFILTER
Filter specification
version 1.3
28.06.2002
TFS 140 M
1/5
1. Measurement condition :
Ambient temperature TA:
Input power level:
45 °C
0 dBm
Terminating impedances in fc :
for input:
50
for output:
50
0 pF.
0 pF.
2. Characteristics :
Remark: Reference level for the relative attenuation arel of the TFS 140 M 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 frequency fc is the arithmetic mean value of the upper and lower
frequencies at the 6 dB filter attenuation level relative to the insertion loss ae. The temperature coefficient of frequency Tcf is valid both for the
reference frequency fc and the frequency response of the filter in the operating temperature range.
Data
typ. value
tolerance / limit
Insertion loss : (Reference level)
ae
28,5 dB
max. 30,5 dB
Centre frequency at ambient temperature :
fc
Centre frequency at room temperature T=23°C:
Pass band : ( see theoretical ¹⁾ frequency response)
PB
Pass band tilt :
Deviation from theoretical frequency response ¹⁾ (p-p) :
fC _.... fC ± fY
140,00 MHz
140,23 MHz
0,0 dB
± 0,15 dB
140,00 ± 0,25 MHz
140,23 ± 0,25 MHz
max. 0,01 dB/MHz
± max. 0,4 dB
Deviation from theoretical phase response ²⁾ (p-p):
fC _.... fC ± fY
±1°
± max. 2
degree
Relative attenuation at ambient temperature :
fC ± 18 MHz .... fC ± 100 MHz
Group delay at fc :
Reflected attenuation compared to main signal
Crosstalk attenuation compared to main signal
arel
50 dB
C
1,467 µs
60
dB
60
dB
min. 40
dB
min. 45
dB
min. 45
dB
Nyquist frequency
Roll-off factor
Partitioning factor
Phase coefficients :
Input power level
p3 = 0,009987
p9 = 0,3920
fY
a
p
p5 = 0,6524
p11 = - 0,110
-
13,805 MHz
0,25
0,5
p7 = - 0,6715
p13 = 0,01421
p15 = - 0,0006794
max. 15
dBm
Temperature coefficient of frequency :
Tcf
Frequency deviation of fc over temperature :
Operating temperature range ( OgTR ) :
Operable temperature range ( OTR ) :
Storage temperature range ( STR ) :
- 75
ppm / K
fc(Hz) = Tcf(ppm/K) x (T - TA) x fC (MHz)
+ 45 °C
- 40 °C ... + 85 °C
- 40 °C ... + 85 °C
1) _{Theoretical frequency response :}
H ( x ) ( S ( x )) ^p ;
S (x)
1
1 1 _cos
22
0
where x ^{f f C}
f_Y
,
for
x (1 a )
( x 1 a)
, for (1 a ) x (1 a ),
2a
for (1 a ) x
2) _{Theoretical phase response :}
Ph ( y ) [ p ₃ y ³ p ₅ y ⁵ p ₇ y ⁷
p₉ y ⁹
p₁₁ y ¹¹
p₁₃ y ¹³
p ₁₅ y ¹⁵ ]( ¹⁸⁰ ) [deg]
where y ^{f f C} [MHz ]
10
Generated:
Checked / approved:
W. Dunzow
Dr. Bert Wall
VI TELEFILTER
Potsdamer Straße 18
D 14 513 TELTOW / Germany
Tel: [phone] / Fax: [phone]
E-Mail: [e-mail]
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