TFS120

TFS120 is a kind of VI telefilter. There are some information about the measurement condition. The ambient temperature is 23. The input power level is 0 dBm. The terminating impedances at fN is 460 || -11,2 pF for input and 440 || -13,0 pF for output. The Q-value of matching elements is 30.

What comes next is about the characteristics of TFS120. The typical insertion loss (Reference level)) (ae) is 12,50 dB and the maximum is 15 dB. The nominal frequency (fN) is 120 MHz. The typical centre frequency (fC at ambient temperature (fCAT)) is 120,01 MHz. The pass band is from fN100 kHz to fN + 100 kHz. The maximum arel (Relative attenuation) is 1 dB at fN to fN ± 100 kHz. The minimum arel is 25 dB at fN ± 400 kHz to fN ± 600 kHz, 35 dB at fN ± 600 kHz to fN ± 1000 kHz and 45 dB at fN ± 1,0 MHz to fN ± 35 MHz. The permissible DC voltage (VDC) is 12 V. The permissible AC voltage (Vpp) is 10 V. The operating temperature range is from - 20 to + 75. The storage temperature range is from - 40 to + 85.

The last one is about the remarks of TFS120. Reference level for the relative attenuation arel of the TFS 120 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 25 dB filter attenuation level relative to the insertion loss ae. The nominal frequency fN is fixed on 120 MHz without tolerance.