APPLICATION NOTES
Last updated on January 2018
© 2018 FRACTUS ANTENNAS, S.L. - 1
RUN mXTENDTM (FR01-S4-224) – AN for BLUETOOTH/WIFI
2400-2500 MHz
Fractus Antennas specializes in enabling effective mobile communications. Using Fractus
Antennas technology, we design and manufacture optimized antennas to make your wireless
devices more competitive. Our mission is to help our clients develop innovative products and
accelerate their time to market through our expertise in antenna design, testing and
manufacturing.
RUN mXTENDTM Antenna Booster
FR01-S4-224
Fractus Antennas products are protected
by Fractus Antennas patents.
All information contained within this
document is property of Fractus Antennas
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 Antennas is an ISO 9001:2015
certified company. All our antennas are
lead-free and RoHS compliant.
ISO 9001: 2015 Certified
APPLICATION NOTES
Last updated on January 2018
© 2018 FRACTUS ANTENNAS, S.L. - 2
TABLE OF CONTENTS
1. PRODUCT DESCRIPTION FR01-S4-224 .......................................................................... 3
2. EVALUATION BOARD BLUETOOTH ................................................................................. 4
2.1. QUICK REFERENCE GUIDE ..................................................................................... 4
2.2. EVALUATION BOARD ................................................................................................ 4
2.3. MATCHING NETWORK .............................................................................................. 5
2.4. VSWR AND TOTAL EFFICIENCY .............................................................................. 5
2.5. RADIATION PATTERNS (2.4-2.5 GHz), GAIN, AND EFFICIENCY ............................ 6
3. EVALUATION BOARD CR80 BLUETOOTH ....................................................................... 7
3.1. QUICK REFERENCE GUIDE ..................................................................................... 7
3.2. EVALUATION BOARD ................................................................................................ 7
3.3. MATCHING NETWORK .............................................................................................. 8
3.4. VSWR AND TOTAL EFFICIENCY .............................................................................. 8
3.5. RADIATION PATTERNS (2.4-2.5 GHz), GAIN, AND EFFICIENCY ............................ 9
APPLICATION NOTES
Last updated on January 2018
© 2018 FRACTUS ANTENNAS, S.L. - 3
1. PRODUCT DESCRIPTION FR01-S4-224
The RUN mXTENDTM Antenna Booster has been specifically designed for providing multiband
performance in wireless devices (in particular in mobile devices), enabling worldwide coverage
by allowing operation in the communication standards Bluetooth, ISM, WIFI, and WLAN.
TOP
BOTTOM
Material: The RUN mXTENDTM Antenna Booster is built on glass epoxy substrate.
APPLICATIONS
BENEFITS
Handsets
Smartphones
Tablets
Phablets
Laptop PCs
Netbooks
Modules
Routers
eBook readers
High efficiency
Small size
Cost-effective
Easy-to-use (pick and place)
Multiband behaviour (worldwide
standards)
Off-the-Shelf Standard Product (no
customization is required)
The RUN mXTENDTM Antenna Booster belongs to a new generation of antenna solutions based
on the Virtual AntennaTM technology owned by Fractus Antennas. The technology is mainly
focused on replacing conventional antenna solutions by miniature and standard components.
APPLICATION NOTES
Last updated on January 2018
© 2018 FRACTUS ANTENNAS, S.L. - 4
2. EVALUATION BOARD BLUETOOTH
2.1. QUICK REFERENCE GUIDE
Technical features
2.4 – 2.5 GHz
Average Efficiency
> 75 %
Peak Gain
4.2 dBi
VSWR
< 1.5:1
Radiation Pattern
Omnidirectional
Polarization
Linear
Weight (approx.)
0.19 g.
Temperature
-40 to + 85 ºC
Impedance
50
Dimensions
(L x W x H)
12.0 mm x 3.0 mm x 2.4 mm
Table 1 – Technical Features. Measures from the Evaluation Board. See Figure 1.
2.2. EVALUATION BOARD
This Evaluation Board EB_FR01-S4-224-2400 integrates a UFL cable to connect the RUN
mXTENDTM Antenna Booster with the SMA connector. The RUN mXTENDTM provides operation
in the frequency region which covers from 2.4 GHz to 2.5 GHz, through a single input/output
port.
Measure
mm
A
126.5
B
120
C
60
D
2.5
Tolerance: ±0.2 mm
D: Distance between the RUN
mXTENDTM Antenna Booster and the
ground plane.
Material: The evaluation board
is built on FR4 substrate.
Thickness is 1 mm.
Figure 1 – EB_FR01-S4-224-2400. Evaluation Board providing
operation from 2.4 GHz to 2.5 GHz.
This product and its use are protected by at least one or more of the following patent PAT. US
9,130,259 B2. Other domestic and international patents pending. Additional information about
patents related to this product is available at www.fractusantennas.com/virtual-antenna/.
APPLICATION NOTES
Last updated on January 2018
© 2018 FRACTUS ANTENNAS, S.L. - 5
2.3. MATCHING NETWORK
The specs of a Fractus Antennas standard product 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 placing pads compatible with 0402 and 0603 SMD components for a matching
network as close as possible to the feeding point. Do it in the ground plane area, not in the
clearance area. This provides a degree of freedom to tune the RUN mXTENDTM Antenna
Booster once the design is finished and taking into account all elements of the system
(batteries, displays, covers, etc.).
Please notice that different devices with different ground planes and different components
nearby the RUN mXTENDTM Antenna Booster may need a different matching network. To
ensure optimal results, the use of high Q and tight tolerance components is highly
recommended (Murata components). Please, if you need assistance contact
info@fractusantennas.com for more information related to the antenna booster matching
service.
2.4 – 2.5 GHz
Value
Part Number
2.3 nH
LQW15AN2N3B80
0.8 pF
GJM1555C1HR80WB01
Figure 2 – Matching Network implemented in the evaluation board (Figure 1).
2.4. VSWR AND TOTAL EFFICIENCY
VSWR (Voltage Standing Wave Ratio) and Total Efficiency versus Frequency (GHz).
Figure 3 – VSWR and Total Efficiency for the 2.4 – 2.5 GHz frequency range (from the evaluation board
(Figure 1)).
APPLICATION NOTES
Last updated on January 2018
© 2018 FRACTUS ANTENNAS, S.L. - 6
2.5. RADIATION PATTERNS (2.4-2.5 GHz), GAIN, AND EFFICIENCY
Measurement System Set-Up
Evaluation Board in Plane XY
= 90º Plane XY at 2.45 GHz
= 0º Plane XZ at 2.45 GHz
= 90º Plane YZ at 2.45 GHz
Gain
Peak Gain
4.2 dBi
Average Gain across the band
3.9 dBi
Gain Range across the band (min, max)
3.6 <–> 4.2 dBi
Efficiency
Peak Efficiency
86.0 %
Average Efficiency across the band
80.4 %
Efficiency Range across the band (min, max)
75.7 – 86.0 %
Table 2 – Antenna Gain and Total Efficiency from the Evaluation Board (Figure 1) within the 2.4 – 2.5
GHz frequency range. Measures made in the Satimo STARGATE 32 anechoic chamber.
APPLICATION NOTES
Last updated on January 2018
© 2018 FRACTUS ANTENNAS, S.L. - 7
3. EVALUATION BOARD CR80 BLUETOOTH
3.1. QUICK REFERENCE GUIDE
Technical features
2.4 – 2.5 GHz
Average Efficiency
> 70 %
Peak Gain
3.0 dBi
VSWR
< 1.5:1
Radiation Pattern
Omnidirectional
Polarization
Linear
Weight (approx.)
0.19 g.
Temperature
-40 to + 85 ºC
Impedance
50
Dimensions
(L x W x H)
12.0 mm x 3.0 mm x 2.4 mm
Table 3 – Technical Features. Measures from the Evaluation Board. See Figure 4.
3.2. EVALUATION BOARD
This Evaluation Board EB_FR01-S4-224-CR80-2400 integrates a UFL cable to connect the
RUN mXTENDTM Antenna Booster with the SMA connector. The RUN mXTENDTM provides
operation in the frequency region which covers from 2.4 GHz to 2.5 GHz, through a single
input/output port.
Measure
mm
A
86
B
79.5
C
54
D
2.5
Tolerance: ±0.2 mm
D: Distance between the RUN mXTENDTM
Antenna Booster and the ground plane.
Material: The evaluation board is built
on FR4 substrate. Thickness is 1 mm.
Figure 4 – EB_FR01-S4-224-CR80-2400 in CR80 standard
format. Evaluation Board providing operation from 2.4 GHz to
2.5 GHz.
This product and its use are protected by at least the following patent: PAT. US 9,130,259 B2.
Other domestic and international patents pending. Additional information about patents related
to this product is available at www.fractusantennas.com/virtual-antenna/.
APPLICATION NOTES
Last updated on January 2018
© 2018 FRACTUS ANTENNAS, S.L. - 8
3.3. MATCHING NETWORK
The specs of a Fractus Antennas standard product 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 placing pads compatible with 0402 and 0603 SMD components for a matching
network as close as possible to the feeding point. Do it in the ground plane area, not in the
clearance area. This provides a degree of freedom to tune the RUN mXTENDTM Antenna
Booster once the design is finished and taking into account all elements of the system
(batteries, displays, covers, etc.).
Please notice that different devices with different ground planes and different components
nearby the RUN mXTENDTM Antenna Booster may need a different matching network. To
ensure optimal results, the use of high Q and tight tolerance components is highly
recommended (Murata components). Please, if you need assistance contact
info@fractusantennas.com for more information related to the antenna booster matching
service.
2.4 – 2.5 GHz
Value
Part Number
4.9 nH
LQW15AN4N9B80
1 pF
GJM1555C1H1R0WB01
Figure 5 – Matching Network implemented in the evaluation board (Figure 4).
3.4. VSWR AND TOTAL EFFICIENCY
VSWR (Voltage Standing Wave Ratio) and Total Efficiency versus Frequency (GHz).
Figure 6 – VSWR and Total Efficiency for the 2.4 – 2.5 GHz frequency range (from the evaluation board
(Figure 4)).
APPLICATION NOTES
Last updated on January 2018
© 2018 FRACTUS ANTENNAS, S.L. - 9
3.5. RADIATION PATTERNS (2.4-2.5 GHz), GAIN, AND EFFICIENCY
Measurement System Set-Up
Evaluation Board in Plane XY
θ = 90º Plane XY at 2.45 GHz
= 0º Plane XZ at 2.45 GHz
= 90º Plane YZ at 2.45 GHz
Gain
Peak Gain
3.0 dBi
Average Gain across the band
2.7 dBi
Gain Range across the band (min, max)
2.5 <–> 3.0 dBi
Efficiency
Peak Efficiency
79.6 %
Average Efficiency across the band
74.8 %
Efficiency Range across the band (min, max)
71.6 – 79.6 %
Table 4 – Antenna Gain and Total Efficiency from the Evaluation Board (Figure 4) within the 2.4 – 2.5
MHz frequency range. Measures made in the Satimo STARGATE 32 anechoic chamber.