device under test
A Bluetooth Low Energy Development Kkit for wireless sensor applications.
Useful Links:
TI SensorTag: www.ti.com/sensortag
http://www.ti.com/tool/cc2541dk-sensor
SensorTag Quick Start Guide: http://www.ti.com/litv/pdf/swru324b
SensorTag Software: http://www.ti.com/tool/sensortag-sw
CC2541 SoC: http://www.ti.com/product/cc2541
The power supply section – TPS62730: http://www.ti.com/product/tps62730
The Meandered IFA dimensions can be found on page 4 of the SWRA117D app note.
One unverified Eagle Library here:
[code]
# ioclk.com Opensource Eagle Script
# Eagle > New Library > Execute Script
# Library script
#
# EAGLE Version 6.5.0 Copyright (c) 1988-2013 CadSoft
#
Set Wire_Bend 2;
# Grid changed to ‘mm’ to avoid loss of precision!
Grid mm;
Layer 1 Top;
Layer 16 Bottom;
Layer 17 Pads;
Layer 18 Vias;
Layer 19 Unrouted;
Layer 20 Dimension;
Layer 21 tPlace;
Layer 22 bPlace;
Layer 23 tOrigins;
Layer 24 bOrigins;
Layer 25 tNames;
Layer 26 bNames;
Layer 27 tValues;
Layer 28 bValues;
Layer 29 tStop;
Layer 30 bStop;
Layer 31 tCream;
Layer 32 bCream;
Layer 33 tFinish;
Layer 34 bFinish;
Layer 35 tGlue;
Layer 36 bGlue;
Layer 37 tTest;
Layer 38 bTest;
Layer 39 tKeepout;
Layer 40 bKeepout;
Layer 41 tRestrict;
Layer 42 bRestrict;
Layer 43 vRestrict;
Layer 44 Drills;
Layer 45 Holes;
Layer 46 Milling;
Layer 47 Measures;
Layer 48 Document;
Layer 49 Reference;
Layer 51 tDocu;
Layer 52 bDocu;
Layer 91 Nets;
Layer 92 Busses;
Layer 93 Pins;
Layer 94 Symbols;
Layer 95 Names;
Layer 96 Values;
Layer 97 Info;
Layer 98 Guide;
Description ”;
Edit ‘IOCLK-TI-ANT.sym’;
Layer 94;
Change Style continuous;
Wire 0.254 (0 10.16) (15.24 10.16) (15.24 7.62) (17.78 7.62) \
(17.78 10.16) (20.32 10.16) (20.32 7.62) (22.86 7.62) \
(22.86 10.16) (25.4 10.16) (25.4 5.08);
Layer 94;
Change Size 1.27;
Change Ratio 8;
Change Align bottom left;
Change Font proportional;
Text ‘PCB Antenna’ R0 (12.7 2.54);
Pin ‘GND’ sup none middle R90 both 0 (0 5.08);
Pin ‘FEED’ in none middle R90 both 0 (5.08 5.08);
Layer 94;
Wire 0.254 (30.48 0) (30.48 15.24) (-2.54 15.24) (-2.54 0) \
(30.48 0);
Edit ‘IOCLK-TI-ANT.pac’;
Description ‘\
PCB Small Antenna \n\
– inv.F 2.4 GHz \n\
– according to TI”s SWRA117D, Application Note AN043\n\
– ioclk.com Eagle Library’;
Layer 1;
Rect R0 (0 0) (0.9 4.9);
Layer 1;
Rect R0 (0 4.9) (5 5.4);
Layer 1;
Rect R0 (2.3 0) (2.8 4.9);
Layer 1;
Rect R0 (4.5 2.26) (5 4.9);
Layer 1;
Rect R0 (5 2.26) (7 2.76);
Layer 1;
Rect R0 (7 2.26) (7.5 4.9);
Layer 1;
Rect R0 (7 4.9) (9.7 5.4);
Layer 1;
Rect R0 (9.2 2.26) (9.7 4.9);
Layer 1;
Rect R0 (9.7 2.26) (11.7 2.76);
Layer 1;
Rect R0 (11.7 2.26) (12.2 4.9);
Layer 1;
Rect R0 (11.7 4.9) (14.4 5.4);
Layer 1;
Rect R0 (13.9 0.96) (14.4 4.9);
Layer 21;
Wire 0.127 (-0.5 5.7) (14.7 5.7);
Wire 0.127 (0 0) (-0.5 0) (-0.5 5.7);
Wire 0.127 (14.7 5.7) (14.7 0) (0.1 0);
Layer 1;
Smd ‘GND’ 0.2 0.2 -0 R0 (0.4 0.1);
Layer 1;
Smd ‘FEED’ 0.2 0.2 -0 R0 (2.5 0.1);
Layer 21;
Change Size 0.6096;
Change Ratio 3;
Change Align bottom left;
Text ‘IOCLK – BLE – ANT’ R0 (3.81 1.27);
Layer 21;
Change Size 0.3048;
Change Align bottom left;
Text ‘According to SWRA117D’ R0 (3.81 0.635);
Layer 1;
Smd ‘G’ 1.27 0.635 -0 R90 (0.4 -0.57);
Layer 1;
Smd ‘F’ 1.27 0.635 -0 R90 (2.56 -0.57);
Edit ‘IOCLK-TI-ANT.dev’;
Prefix ”;
Description ‘\
PCB Small Antenna \n\
– inv.F 2.4 GHz \n\
– according to TI”s SWRA117D, Application Note AN043\n\
– ioclk.com Eagle Library’;
Value off;
Add IOCLK-TI-ANT ‘G$1’ next 0 (0 0);
Package ‘IOCLK-TI-ANT’ ”;
Technology ”;
Connect ‘G$1.FEED’ ‘F’ ‘G$1.GND’ ‘G’;
Grid inch;
[/code]