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Message ID: 14482     Entry time: Sun Mar 17 21:06:17 2019
Author: Anjali 
Type: Update 
Category: ALS 
Subject: Amplifier characterisation 

The goal was to characterise the new amplifier (AP1053). For a practice, I did the characterisation of the old amplifier.This test is similar to that reported in Elog ID 13602.

  • Attachment #1 shows the schematic of the setup for gain characterisation and Attachment #2 shows the results of gain characterisation. 
  • The gain measurement is comparable with the previous results. From the data sheet, 10 dB gain is guaranteed in the frequency range 10-450 MHz. From our observation, the gain is not flat pver this region. We have measured a maximum gain of 10.7 dB at 6 MHz and it has then decreased upto 8.5 dB at 500 MHz
  • Attachement #3 shows the schematic of the setup for the noise characterisation and Attachment # 4 shows the results of noise measurment. 
  • The noise measurement doesn't look fine. We probably have to repeat this measurement.
Attachment 1: Gain_measurement.pdf  35 kB  Uploaded Sun Mar 17 22:08:57 2019  | Hide | Hide all
Gain_measurement.pdf
Attachment 2: Amplifier_gain.pdf  28 kB  Uploaded Sun Mar 17 22:09:09 2019  | Hide | Hide all
Amplifier_gain.pdf
Attachment 3: noise_measurement.pdf  19 kB  Uploaded Sun Mar 17 22:16:20 2019  | Hide | Hide all
noise_measurement.pdf
Attachment 4: noise_characterisation.pdf  37 kB  Uploaded Sun Mar 17 22:21:43 2019  | Hide | Hide all
noise_characterisation.pdf
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