TFS285 Datasheet, PDF (1/5 Pages) Vectron International, Inc – Filter specification

T_{_}f_{_}s_{_}2_{_}85_{_}._{_}d_{_}oc_{_________________________________________________}v_{_}e_{_}rs_{_}i_{_}on_{__}2_{_}.0_{_________________________}0_{_}7_{_}.0_{_}7_{_}._{_}20_{_}0_{_}0_{_______}
V_{__}I_{__}T_{_}E_{__}L_{_}E_{__}F_{_}I_{_}L_{__}T_{_}E_{__}R_{______________________}F_{_}i_{_}l_{_}t_{_}e_{_}r_{__}s_{_}p_{__}e_{_}c_{_}i_{_}f_{_}i_{_}c_{_}a_{_}t_{_}i_{_}o_{_}n_{_____________________}T_{__}F_{_}S_{___}2_{_}8_{_}5_{________}1_{_}/_{_}5_{____}
Measurement condition
Ambient temperature:
Input power level:
Terminating impedance
Input
Output
23 °C
0 dBm
30 Ω || -21.2 pF
35 Ω || -21.6 pF
Characteristics
Remark:
Reference level for the relative attenuation arel of the TFS 285 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 fo is the arithmetic mean value of the upper and lower frequencies at the
30 dB filter attenuation level relative to the insertion loss ae. The nominal frequency fN is fixed on 285 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 fo 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 fo
Data
typ. value
tolerance / limit
______________________________________________________________________________________________________
Insertion loss
ae = amin
9,5 dB
max. 12
dB
(Reference level)
______________________________________________________________________________________________________
_^N_^o_^m__ⁱⁿ_^a_^l_^f_^re_^q__^u_^e_ⁿ_^c_^y_______^fN____________________________________-____________________________2_8_5______M_H_z____
Pass band
Pass band ripple
fN ± 7,5 MHz
0,8 dB
max. 1,2 dB
Passband width
3 dB
min. 20
MHz
______________________________________________________________________________________________________
Group delay GD
_G_ro_u_p__d_e_la_y__ri_p_p_le_________fN__^±__7_,5__M_H__z_________________________9_0_____n_s_________________m_a_x_.__1_5_0______n_s______
Relative attenuation
arel
fN - 75 MHz ... fN - 20 MHz
38
dB
min. 30
dB
f_N__+___2_0_____M_H_z__.._.___fN__+__7_5____M__H_z__________________________3_8_____d_B_________________m_i_n_.___3_0______d_B______
VSWR ratio
_______a_t_f^N__–_7_,_5_M__H_z__.._. _f_^N_+__7_,5__M__H_z___________________________^-_______________________m_a_x_.____2_:_1___________
Operating temperature range
- 5 °C ... + 85 °C
______________________________________________________________________________________________________
Temperature coefficient of frequency TCf
- 72
ppm/K
______________________________________________________________________________________________________
Input power level
max. + 10
dBm
______________________________________________________________________________________________________
Generated:
Checked / approved:
______________________________________________________________________________________________________
VI TELEFILTER
Vectron International, Inc.
Potsdamer Straße 18
267 Lowell Road
D 14 513 TELTOW / Germany
Hudson, NH 03051 / USA
Tel: [phone] / Fax: [phone]
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E-Mail: [e-mail]
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