TELEFILTER
tfs380a.doc
version 3.0
13.03.2001
VI TELEFILTER
Filter specification
TFS 380A
1/5
Measurement Condition
Ambient ...
Description
tfs380a.doc
version 3.0
13.03.2001
VI TELEFILTER
Filter specification
TFS 380A
1/5
Measurement Condition
Ambient Temperature: Input Power Level: Source impedance: Load impedance: Terminating impedances: input: output: 23 0 50 50 °C dBm Ω Ω
720 Ω || -4.7pF 1000 Ω || -4.1pF
Characteristics
Remark:
Reference level for the relative attenuation arel is the minimum pass band attenuation amin. It is defined as the insertion loss ae. The nominal frequency fN is fixed to 380,0 MHz. The center frequency fc is the arithmetic mean value of the upper and lower frequencies at the 1 dB filter attenuation level relative to the insertion loss ae The given values for the insertion loss, the relative attenuation arel and 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.
Data
Insertion Loss (Reference level) Nominal Frequency 1 dB - Bandwidth Relative Attenuation fN ± 2,5 fN ± 3,0 fN ± 3,25 fN ± 3,5 fN ± 5,0 MHz ... fN ± 3,0 MHz ... fN ± 3,25 MHz ... fN ± 3,5 MHz ... fN ± 5,0 MHz ... fN ± 100,0
ae = amin
typ. Value
14,0 dB max.
Limit
17 dB
fN BW
4,2 MHz min.
380,0 MHz 4,05 MHz
arel MHz MHz MHz MHz MHz 5 20 35 38 50 dB dB dB dB dB min. min. min. min. min. 3 10 20 30 40 dB dB dB dB dB
Pass Band Ripple fN ± 2,025 MHz Group delay ripple fN ± 2,025 MHz ϕ
0,4 dB
max.
1
...
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