Fractus Slim Reach Xtend™
Bluetooth®, Zigbee®, 802.11 b/g/n WLAN
Chip Antenna
Antenna Part Number:
FR05-S1-N-0-104
This product is protected by at least the following patents PAT. US 7,148,850, US 7,202,822 and other
domestic and international patents pending. Any update on new patents linked to this product will appear in
http://www.fractus.com/index.php/fractus/patents
All information contained within this document is property of Fractus and is subject to change without prior
notice. Information is provided “as is” and without warranties. It is prohibited to copy or reproduce this
information without prior approval.
Fractus is an ISO 9001:2008 certified company. All our antennas are lead-free and RoHS compliant.
July 2015
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1999-2015 © FRACTUS, S.A.
TABLE OF CONTENTS
1. ANTENNA DESCRIPTION _______________________________________________________3
2. QUICK REFERENCE GUIDE ______________________________________________________3
3. ELECTRICAL PERFORMANCE ____________________________________________________4
3.1. FRACTUS EVALUATION BOARD _______________________________________________4
3.2. VSWR AND EFFICIENCY _____________________________________________________4
3.3. RADIATION PATTERN (at 2.45 GHz), GAIN AND EFFICIENCY ________________________5
3.4. CAPABILITIES AND MEASUREMENT SYSTEMS ____________________________________6
4. MECHANICAL CHARACTERISTICS ________________________________________________7
4.1. DIMENSIONS, TOLERANCES & MATERIALS ______________________________________7
4.2. COLOUR RANGE FOR THE INK ________________________________________________7
4.3. ANTENNA FOOTPRINT (as used in the evaluation board) ___________________________8
5. MATCHING NETWORK _________________________________________________________8
6. ASSEMBLY PROCESS __________________________________________________________9
7. PACKAGING ________________________________________________________________11
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1999-2015 © FRACTUS, S.A.
1. ANTENNA DESCRIPTION
Fractus Slim Reach XtendTM chip antenna is engineered specifically for wireless headsets using Bluetooth® and
other wireless standards operating at the ISM 2.4 GHz band.
The Slim Reach XtendTM antenna has been designed to resonate at 2.65 GHz in free space conditions. This has
been done purposely because the human head and plastic housing produce a frequency downshift of 150-250
MHz in the resonance frequency of the antenna. Based on our research and development in this area, you are
not forced to test multiple antennas with different resonant frequencies.
0.9 mm
3.0 mm
7.0 mm
TOP
BOTTOM
BENEFITS
APPLICATIONS




Headsets
Modules WiFi, Bluetooth, Zigbee...
Sensors (data acquisition, etc...)
RTLS (Real Time Location System)



Small footprint and size
Cost-effective
Easy-to-use (pick and place)
2. QUICK REFERENCE GUIDE
Technical Features
Frequency range
2.4 GHz – 2.5 GHz
Average Efficiency
61.0 %
Peak Gain
1.1 dBi
Radiation Pattern
Omnidirectional
VSWR
< 2:1
Polarization
Linear
Weight (approx.)
0.04 g
Temperature
Impedance
Dimensions (L x W x H)
Please contact info@fractus.com if you
require additional information on antenna
integration or optimisation on your PCB.
-40 to + 85 ºC
50 
7.0 mm x 3.0 mm x 0.9 mm
FRACTUS S.A.
www.fractus.com
Tel: +34 935442690
Fax: +34 935442691
Table 1 - Technical Features. Measures from the evaluation
board (40.0 mm x 20.0 mm x 1.0 mm PCB). See picture in page 5.
July 2015
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1999-2015 © FRACTUS, S.A.
3. ELECTRICAL PERFORMANCE
3.1. FRACTUS EVALUATION BOARD
The configuration used in testing the Slim Reach Xtend chip antenna is displayed in Figure 1.
A
D
Slim Reach Xtend
Antenna
50 Ohms transmission line
B
Ground Plane
Measure
mm
A
34.0
B
20.0
C
40.0
D
6.4
E
20.0
Tolerance: ±0.2 mm
C
E
SMA
Connector
Antenna
Clearance
Material: The evaluation board is built
on FR4 substrate. Thickness is 1.0 mm
Figure 1 – Slim Reach Xtend Evaluation Board. See picture in page 5
3.2. VSWR AND EFFICIENCY
Graph 1 - VSWR (Voltage Standing Wave Ratio) and Efficiency (%) vs. Frequency
(GHz)
Note: the frequency performance is centred in between 2.4 GHz and 2.5 GHz in headset designs. The effect of
the device casing and the human body are taken into account.
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1999-2015 © FRACTUS, S.A.
3.3. RADIATION PATTERN (at 2.45 GHz), GAIN AND EFFICIENCY
0
5
30
0
30
-5
-10
60
60
-15
-20
-25
-30
90
90
120
120
150
150
180
Orientation: Antenna in Plane ZY
0
Azimuth Cut θ = 90º Plane XY
0
5
30
0
5
30
30
0
-10
-10
60
60
60
-15
-20
-20
-25
90
120
150
-30
90
120
60
-15
-25
-30
90
30
-5
-5
90
120
150
120
150
180
150
180
Elevation Cut  = 0 Plane XZ
Elevation Cut  = 90 Plane YZ
Peak Gain
1.1 dBi
Average Gain across the band
0.7 dBi
Gain
Gain Range across the band (min, max)
Efficiency
0.4 dBi <-> 1.1 dBi
Peak Efficiency
66.0 %
Average Efficiency across the band
61.0 %
Efficiency Range across the band
57.0 % - 66.0 %
Table 2 – Antenna Gain and Efficiency within the 2.4-2.5 GHz band. Measures made in the evaluation board
and in the Satimo STARGATE 32 anechoic chamber.
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1999-2015 © FRACTUS, S.A.
3.4. CAPABILITIES AND MEASUREMENT SYSTEMS
Fractus specialises in designing and manufacturing optimised antennas for wireless applications and
providing our clients with RF expertise. We offer turn-key antenna products and antenna integration
support to minimise your time requirement and maximize your return on investment during your
product development efforts. We also provide our clients with the opportunity to leverage our inhouse testing and measurement facilities to obtain accurate results quickly and efficiently.
0
Le ft Ante nna
Rig ht Ante nna
Is o latio n
-2
-6
Re turn Lo s s (dB)
VSWR
&
S Parameters
-4
-8
VSWR=2
-10
-12
-14
-16
Agilent E5071B
-18
-20
2
2.5
3
3.5
4
4.5
Fre que nc y (GHz)
0
5
5.5
6
5
330
0
30
-5
Radiation
Pattern
&
Efficiency
-10
300
60
-15
-20
-25
-30
270
90
240
120
f=5350MHz
210
SATIMO’s STARGATE 32
150
180
Anechoic and semi-anechoic chambers and full equipped in-house lab
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1999-2015 © FRACTUS, S.A.
4. MECHANICAL CHARACTERISTICS
4.1. DIMENSIONS, TOLERANCES & MATERIALS
TOP
BOTTOM
Figure 2 – Antenna Dimensions and Tolerances
Measure
mm
Measure
mm
A
7.0  0.2
E
1.1  0.1
B
3.0  0.2
F
2.2  0.1
C
0.9  0.2
G
4.0  0.2
D
0.40  0.15
The white square located on the top side of the
antenna indicates the feed pad.
Fractus Slim Reach Xtend chip antenna is compliant with the restriction of the use of hazardous substances
(RoHS).
The RoHS certificate can be downloaded from http://www.fractus.com/index.php/fractus/documentation
4.2. COLOUR RANGE FOR THE INK
The next figure shows the range of the colours in the antenna:
Acceptable colour range
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1999-2015 © FRACTUS, S.A.
4.3. ANTENNA FOOTPRINT (as used in the evaluation board)
This antenna footprint applies for the reference evaluation board described in page 4 of this User Manual.
Feeding line dimensions over the clearance zone described in figure 3 applies for a 1 mm thickness FR4 PCB.
Measure
mm
A
B
7.0
3.0
C
1.5
D
0.2
E
2.6
F
3.6
G
3.0
H
I
0.5
4.7
J
1.5
Tolerance: ±0.2 mm
Figure 3 – Antenna Footprint Details
Other PCB form factors and configurations may require a different feeding configuration, feeding line
dimensions and clearance areas. If you require support for the integration of the antenna in your design,
please contact info@fractus.com
5. MATCHING NETWORK
The specs of a Fractus standard antenna are measured in their evaluation board, which is an ideal case. In a
real design, components nearby the antenna, LCD’s, batteries, covers, connectors, etc affect the antenna
performance. This is the reason why it is highly recommended to place 0402 pads for a PI matching network
as close as possible to the antenna feeding point. Do it in the ground plane area, not in the clearance area.
This is a degree of freedom to tune the antenna once the design is finished and taking into account all
elements of the system (batteries, displays, covers, etc).
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1999-2015 © FRACTUS, S.A.
6. ASSEMBLY PROCESS
Figure 4 shows the back and front view of the Slim Reach Xtend chip antenna, which indicates the location of
the feeding point and the mounting pad:
Mounting Pad (2): solder the antenna mounting pad to the
soldering pad on the PCB. This pad must NOT be grounded.
1
2
Feed Pad (1): the white square on the top of the antenna indicates the position of the feed
pad in the bottom. Align the feed point with the feeding line on the PCB. See Figure 1.
Figure 4 – Pads of the Slim Reach Xtend Chip Antenna
As a surface mount device (SMD), this antenna is compatible with industry standard soldering processes. The
basic assembly procedure for this antenna is as follows:
1. Apply a solder paste on the pads of the PCB. Place the antenna on the board.
2. Perform a reflow process according to the temperature profile detailed in table 3, figure 6 of page 10.
3. After soldering the antenna to the circuit board, perform a cleaning process to remove any residual flux.
Fractus recommends conducting a visual inspection after the cleaning process to verify that all reflux has
been removed.
The drawing below shows the soldering details obtained after a correct assembly process:
Antenna
Antenna
Solder Paste
~ 0.1* mm
PCB
PCB
Figure 5 - Soldering Details
NOTE(*): Solder paste thickness after the assembly process will depend on the thickness of the soldering
stencil mask. A stencil thickness equal or larger than 127 microns (5 mils) is required.
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1999-2015 © FRACTUS, S.A.
Fractus Slim Reach Xtend chip antenna can be assembled following the Pb-free assembly process. According to
the Standard IPC/JEDEC J-STD-020C, the temperature profile suggested is as follows:
Phase
Profile features
Pb-Free Assembly
(SnAgCu)
RAMP-UP
Avg. Ramp-up Rate (Tsmax to Tp)
3 ºC / second (max.)
PREHEAT
- Temperature Min (Tsmin)
- Temperature Max (Tsmax)
- Time (tsmin to tsmax)
150 ºC
200 ºC
60-180 seconds
REFLOW
- Temperature (TL)
- Total Time above TL (t L)
217 ºC
60-150 seconds
PEAK
- Temperature (Tp)
- Time (tp)
260 ºC
20-40 seconds
RAMP-DOWN
Rate
6 ºC/second max.
Time from 25 ºC to Peak Temperature
8 minutes max.
Table 3 – Recommended soldering temperatures
Next graphic shows temperature profile (grey zone) for the antenna assembly process in reflow ovens.
Figure 6 – Temperature profile
July 2015
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1999-2015 © FRACTUS, S.A.
7. PACKAGING
The Slim Reach Xtend chip antenna is available in tape and reel packaging.
Measure
mm
Measure
mm
TAPE WIDTH (W)
16.0 ± 0.3
Wmax
16.3
A0
3.4 ± 0.1
E
1.7 ± 0.1
B0
K0
7.4 ± 0.1
1.2 ± 0.1
F
K
7.5 ± 0.1
1.5 ± 0.1
B1
8.0 ± 0.1
P
8.0 ± 0.1
D
1.55 ± 0.05
P0
4.0 ± 0.1
D1
1.55 ± 0.05
P2
2.0 ± 0.1
Figure 7 –Tape dimensions & real image including antennas
Measure
A
mm
330 ± 1
G
17.5 ± 0.2
t max
21.5 ± 0.2
Reel Capacity: 2500 antennas.
Figure 8 – Reel Dimensions and Capacity
July 2015
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1999-2015 © FRACTUS, S.A.
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