40m QIL Cryo_Lab CTN SUS_Lab TCS_Lab OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
  ATF eLog  Not logged in ELOG logo
Entry  Sat Jan 8 19:52:24 2011, Alastair, Electronics, GYRO, PD board design PCB_drawing_RFPD.pdfRFPD_schematic.pdf
    Reply  Mon Jan 10 15:18:24 2011, Alastair, Electronics, GYRO, PD board design 
       Reply  Mon Jan 10 16:08:04 2011, Alastair, Electronics, GYRO, PD board design 
Message ID: 1235     Entry time: Sat Jan 8 19:52:24 2011     Reply to this: 1237
Author: Alastair 
Type: Electronics 
Category: GYRO 
Subject: PD board design 

 Here is the latest schematic for the PDs along with the board layout.  I'm going to check over the routing one last time but it will probably require checking by someone with more RF experience too.  The pcb drawing doesn't show all the features in the pdf.  It uses split internal planes to distribute the power for the diode bias and also the +/-5v for the opamp.  I've kept a full ground plane as the first one down, so there is a continuous ground plane directly underneath the tracks on the surface.

Attachment 1: PCB_drawing_RFPD.pdf  29 kB  Uploaded Mon Jan 10 09:24:33 2011  | Hide | Hide all
Attachment 2: RFPD_schematic.pdf  109 kB  Uploaded Mon Jan 10 09:24:45 2011  | Hide | Hide all
ELOG V3.1.3-