1Copyright 2012 Michael Ossmann
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
21Jawbreaker is the first complete HackRF platform, a wideband software radio
22transceiver with a USB interface.
23
24hardware notes:
25
26Schematic and layout files were designed in KiCad, an open source electronic
27design automation package.
28
29order of copper layers:
30    Copper 1: Front
31    Copper 2: Inner3
32    Copper 3: Inner2
33    Copper 4: Back
34
35PCB description: 4 layer PCB 0.062 in
36    Copper        1   0.5 oz foil plated to approximately 0.0017 in
37    Dielectric  1-2   0.0119 in
38    Copper        2   1 oz foil (0.0014 in)
39    Dielectric  2-3   0.0280 in
40    Copper        3   1 oz foil (0.0014 in)
41    Dielectric  3-4   0.0119 in
42    Copper        4   0.5 oz foil plated to approximately 0.0017 in
43FR4 or similar substrate with Er=4.5 (+/- 0.1)
44double side solder mask black
45double side silkscreen white
466 mil min trace width and
476 mil min isolation
48