Najlepsza pozytywna recenzja dla Atenuator na Banggood Poland|Zakupy Polska

DC-4.0GHz Atenuator fiksowany RF Stała częstotliwość Radiowa US$13.79 US$11.99 View It

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bvernoux 05/05/2020

I have tested each attenuation 0 dB (reference), 10 dB, 20 dB and 30 dB with my calibrated VNA HP 8753D (30kHz to 6GHz) and all was in tolerance from 30 kHz to 4 GHz (I have done measurement up to 6 GHz) except the 20dB attenuation which was out of expected tolerance from 3.1GHz up to 4GHz or more. => Frequency 3.1 GHz, S21 Gain -18.8 dB, Delta dB of +1.2 dB when it was expected to be +/-1.1 dB => Frequency 4 GHz, S21 Gain -18.2 dB, Delta dB of +1.8 dB when it was expected to be +/-1.1 dB => Outside 4 GHz there is big discrepancies up to Delta dB of +6.7 dBmore than expected tolerance for example at 5.4 GHz S21 Gain -13.3 dB => delta dB +6.7 For more details with full report see: https://hydrabus.com/DC_to_4GHz_RF_Fixed_Attenuator_VNA_Tests_BVERNOUX_05May2020.pdf For all VNA S2P files see: https://hydrabus.com/DC_to_4GHz_RF_Fixed_Attenuator_VNA_Tests_BVERNOUX_05May2020_S2P.7z

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