Copyright 2012 - 2016 Great Scott Gadgets
These files are part of HackRF.
This is a free hardware design; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
This design is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this design; see the file COPYING. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street,
Boston, MA 02110-1301, USA.
Opera Cake is an RF switching add-on for HackRF One.
hardware notes:
Schematic and layout files were designed in KiCad, an open source electronic
design automation package.
order of copper layers:
Copper 1: C1F (front)
Copper 2: C2
Copper 3: C3
Copper 4: C4B (back)
PCB description: 4 layer PCB 0.0646 in
Copper 1: 1 oz copper (1.4 mil)
Dielectric 1-2: 6.7 mil prepreg
Copper 2: 0.5 oz copper (0.7 mil)
Dielectric 2-3: 47 mil core
Copper 3: 0.5 oz copper (0.7 mil)
Dielectric 3-4: 6.7 mil prepreg
Copper 4: 1 oz copper (1.4 mil)
FR408 or similar substrate with Er=3.66 (+/- 0.1)
double side solder mask green
double side silkscreen white
6 mil min trace width and
6 mil min isolation
PCBs of this specification are available from OSH Park.
