1Copyright 2012 - 2016 Great Scott Gadgets 2 3These files are part of HackRF. 4 5This is a free hardware design; you can redistribute it and/or modify 6it under the terms of the GNU General Public License as published by 7the Free Software Foundation; either version 2, or (at your option) 8any later version. 9 10This design is distributed in the hope that it will be useful, 11but WITHOUT ANY WARRANTY; without even the implied warranty of 12MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13GNU General Public License for more details. 14 15You should have received a copy of the GNU General Public License 16along with this design; see the file COPYING. If not, write to 17the Free Software Foundation, Inc., 51 Franklin Street, 18Boston, MA 02110-1301, USA. 19 20 21Neapolitan is an add-on for HackRF One enabling full-duplex operation. 22 23hardware notes: 24 25Schematic and layout files were designed in KiCad, an open source electronic 26design automation package. 27 28order of copper layers: 29 Copper 1: C1F (front) 30 Copper 2: C2 31 Copper 3: C3 32 Copper 4: C4B (back) 33 34PCB description: 4 layer PCB 0.062 in 35 Copper 1 0.5 oz foil plated to approximately 0.0017 in 36 Dielectric 1-2 0.0119 in 37 Copper 2 1 oz foil (0.0014 in) 38 Dielectric 2-3 0.0280 in 39 Copper 3 1 oz foil (0.0014 in) 40 Dielectric 3-4 0.0119 in 41 Copper 4 0.5 oz foil plated to approximately 0.0017 in 42 43FR4 or similar substrate with Er=4.5 (+/- 0.1) 44double side solder mask green 45single side silkscreen white 466 mil min trace width and 476 mil min isolation 48