1 / 10

AMY@Lecce Status .

AMY@Lecce Status. Rise Time 400nsec / Fall Time 10 nsec. (from -60 dBm to +5 dBm). AMY- First tests in Lecce AstroParticle Lab. The Signal Generator is optioned with Pulse Modulator and Generator, that allows to pulse inside a gate signal ( Δ t min = 10 ns). Signal Generator

gazit
Download Presentation

AMY@Lecce Status .

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. AMY@Lecce Status. AMY Meeting. 25 Feb 2011

  2. Rise Time 400nsec / Fall Time 10 nsec (from -60 dBm to +5 dBm) AMY- First tests in Lecce AstroParticle Lab The Signal Generator is optioned with Pulse Modulator and Generator, that allows to pulse inside a gate signal (Δt min = 10 ns) Signal Generator R&S SMB100A 9kHz to 3.2GHz A simple setup just to start… Power Detector ZX47-60-S+ containing AD8318 From Data Sheet AMY Meeting. 25 Feb 2011

  3. Power Detector(ZX47-60-S+) Time response INPUT Signal • Signal Pulse Width from 10 nsec to 200 nsec • 2 different frequencies (1.7 GHz and 2.6 GHz) • 2 different signal amplitude (-40 dBm and -60 dBm) OUTPUT Signal ( V measure on the scope) The power detector seems fully efficient only for signals having a pulse > 100 nsec A similar temporal behaviour on rise/fall. OPEN Questions • Time is much longer then specifications AMY Meeting. 25 Feb 2011

  4. noise level INPUT Signal • Signal Pulse Width 100 nsec • scan in frequencies: • from 0.3 GHz to 3 GHz • scan in signal amplitudes: • from -90 dBm to -30 dBm The power detector is sensitive for signal levels > -65 dBm. In agreement with datasheet (from -60 dBm to +5 dBm) The signal output varies with RF frequency: Power Detector-Sensible range: 1MHz-8GHz AMY Meeting. 25 Feb 2011

  5. LNB S-Band AMY Meeting. 25 Feb 2011

  6. LNB- Sensitivity to signal levels around -80 dBm AMY Meeting. 25 Feb 2011

  7. Trying to improve the signal/noise ratio AMY Meeting. 25 Feb 2011

  8. Amplifier+PowerDetector Introducing an amplifier. AMY Meeting. 25 Feb 2011

  9. First tests on transmission-reception. ≈500 MHz dipole. AMY Meeting. 25 Feb 2011

  10. Carlo has realized a small antenna for feeding the LNB. • Small acquisition set-up (eventually for acquiring directly • the LNB (around 1 - 3 GHz). • Investigating other Power Detectors and/or different evaluation boards. • 2 more from AD as the one we have in order to modify the board • Power Detector from Maxim with larger dynamic range (home made evaluation board) • Trying to understand the time response • FADC-> requested funding (answer 11 March) • More LNBF on different bands (C, Ku). No way to test on this bands apart noise AMY Meeting. 25 Feb 2011

More Related