TFS840

      The TFS840 is designed as VI telefilter.Reference level for the relative attenuation arel of the TFS 840 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 -3 dB filter attenuation level relative to the insertion loss ae. The nominal frequency fN is fixed on 840,0 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.
      Some TFS840 important specifications have been concluded into several points as follow.The first one is about its insertion loss which would be typ 3.75dB and max 5.5dB.The next one is about its nominal frequency which would be max 840,0 MHz.The next one is about its centre frequency which would be typ 840,0 MHz.The next one is about its 2 dB bandwidth which would be typ 49.50 MHz and min. 40.0 MHz.The next one is about its pass band ripple within ± 20,0 MHz which would be typ 1,5 dB and max. 2,0 dB.The next one is about its operating temperature range which would be from - 25 °C to + 75 °C.The next one is about its storage temperature range which would be from - 30 °C to + 80 °C.
      Also some stability characteristics about TFS840.Its shock would be 500g, 18 ms, half sine wave, 3 shocks each plane, DIN IEC 68 T2 - 27. Its vibration would be 10 Hz to 500 Hz, 0,35 mm or 5g respectively, 1 octave per min, 10 cycles per plan, 3 plans, DIN IEC 68 T2 - 6. And so on.For more information please contact us.