APPLICATION NOTES
Last updated on November 2016
© 2016 FRACTUS ANTENNAS, S.L. - 1
RUN mXTENDTM (FR01-S4-224) – AN for ISM868/915
863-870 MHz and 902-928 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 9001:2008
certified company. All our antennas are
lead-free and RoHS compliant.
APPLICATION NOTES
Last updated on November 2016
© 2016 FRACTUS ANTENNAS, S.L. - 2
TABLE OF CONTENTS
1. PRODUCT DESCRIPTION FR01-S4-224 .......................................................................... 4
2. EVALUATION BOARD 863-870 MHz ................................................................................. 5
2.1. QUICK REFERENCE GUIDE ..................................................................................... 5
2.2. EVALUATION BOARD ................................................................................................ 5
2.3. MATCHING NETWORK .............................................................................................. 6
2.4. VSWR AND TOTAL EFFICIENCY .............................................................................. 6
2.5. RADIATION PATTERNS (863-870 MHz), GAIN, AND EFFICIENCY .......................... 7
3. EVALUATION BOARD 902-928 MHz ................................................................................. 8
3.1. QUICK REFERENCE GUIDE ..................................................................................... 8
3.2. EVALUATION BOARD ................................................................................................ 8
3.3. MATCHING NETWORK .............................................................................................. 9
3.4. VSWR AND TOTAL EFFICIENCY .............................................................................. 9
3.5. RADIATION PATTERNS (902-928 MHz), GAIN, AND EFFICIENCY ........................ 10
4. EVALUATION BOARD 863-928 MHz ............................................................................... 11
4.1. QUICK REFERENCE GUIDE ................................................................................... 11
4.2. EVALUATION BOARD .............................................................................................. 11
4.3. MATCHING NETWORK ............................................................................................ 12
4.4. VSWR AND TOTAL EFFICIENCY ............................................................................ 12
4.5. RADIATION PATTERNS (863-928 MHz), GAIN, AND EFFICIENCY ........................ 13
5. EVALUATION BOARD CR80 863-870 MHz ..................................................................... 14
5.1. QUICK REFERENCE GUIDE ................................................................................... 14
5.2. EVALUATION BOARD .............................................................................................. 14
5.3. MATCHING NETWORK ............................................................................................ 15
5.4. VSWR AND TOTAL EFFICIENCY ............................................................................ 15
5.5. RADIATION PATTERNS (863-870 MHz), GAIN, AND EFFICIENCY ........................ 16
6. EVALUATION BOARD CR80 902-928 MHz ..................................................................... 17
6.1. QUICK REFERENCE GUIDE ................................................................................... 17
6.2. EVALUATION BOARD .............................................................................................. 17
6.3. MATCHING NETWORK ............................................................................................ 18
6.4. VSWR AND TOTAL EFFICIENCY ............................................................................ 18
6.5. RADIATION PATTERNS (902-928 MHz), GAIN, AND EFFICIENCY ........................ 19
7. EVALUATION BOARD CR80 863-928 MHz ..................................................................... 20
7.1. QUICK REFERENCE GUIDE ................................................................................... 20
7.2. EVALUATION BOARD .............................................................................................. 20
7.3. MATCHING NETWORK ............................................................................................ 21
APPLICATION NOTES
Last updated on November 2016
© 2016 FRACTUS ANTENNAS, S.L. - 3
7.4. VSWR AND TOTAL EFFICIENCY ............................................................................ 21
7.5. RADIATION PATTERNS (863-928 MHz), GAIN, AND EFFICIENCY ........................ 22
APPLICATION NOTES
Last updated on November 2016
© 2016 FRACTUS ANTENNAS, S.L. - 4
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 such as ISM868, ISM915, Zigbee, and
RFID.
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 developed by Fractus. The technology is mainly focused on
replacing conventional antenna solutions by miniature and standard components.
This project has received funding from the European Union’s Horizon 2020
research and innovation programme under grant agreement Nº 674491
APPLICATION NOTES
Last updated on November 2016
© 2016 FRACTUS ANTENNAS, S.L. - 5
2. EVALUATION BOARD 863-870 MHz
2.1. QUICK REFERENCE GUIDE
Technical features
863 – 870 MHz
Average Efficiency
> 85.0 %
Peak Gain
2.1 dBi
VSWR
< 2:1
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-S4-224-868 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 863 MHz to 870 MHz, through a single input/output
port.
Measure
mm
A
131
B
120
C
60
D
8.0
E
5.0
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-S4-224-868. Evaluation Board providing
operation from 863 MHz to 870 MHz.
This product and its use is protected by at least one or more of the following patents and patent
applications US 8,203,492; US 8,237,615; PCT/EP2013/064692; WO2014/012842; US
62/028,494; US 62/072,671; and other domestic and international patents pending. Additional
information about patents related to this product is available at
www.fractusantennas.com/virtual-antenna/.
AB
C
D
E
APPLICATION NOTES
Last updated on November 2016
© 2016 FRACTUS ANTENNAS, S.L. - 6
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 note 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.
863 – 870 MHz
Value
Part Number
30 nH
LQW18AN30NG00
20 nH
LQW18AN20NG00
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 863 – 870 MHz from the evaluation board (Figure 1).
APPLICATION NOTES
Last updated on November 2016
© 2016 FRACTUS ANTENNAS, S.L. - 7
2.5. RADIATION PATTERNS (863-870 MHz), GAIN, AND EFFICIENCY
Measurement System Set-Up
Evaluation Board in Plane XY
= 90º Plane XY at 868 MHz
= 0º Plane XZ at 868 MHz
= 90º Plane YZ at 868 MHz
Gain
Peak Gain
2.1 dBi
Average Gain across the band
1.9 dBi
Gain Range across the band (min, max)
1.7 <–> 2.1 dBi
Efficiency
Peak Efficiency
91.5 %
Average Efficiency across the band
88.6 %
Efficiency Range across the band (min, max)
84.2 – 91.5 %
Table 2 – Antenna Gain and Total Efficiency from the evaluation board (Figure 1) within the 863 – 870
MHz frequency range. Measures made in the Satimo STARGATE 32 anechoic chamber.
APPLICATION NOTES
Last updated on November 2016
© 2016 FRACTUS ANTENNAS, S.L. - 8
3. EVALUATION BOARD 902-928 MHz
3.1. QUICK REFERENCE GUIDE
Technical features
902 – 928 MHz
Average Efficiency
> 85.0 %
Peak Gain
2.1 dBi
VSWR
< 2:1
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-S4-224-915 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 902 MHz to 928 MHz, through a single input/output
port.
Measure
mm
A
131
B
120
C
60
D
8.0
E
5.0
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-S4-224-915. Evaluation Board providing
operation from 902 MHz to 928 MHz.
This product and its use is protected by at least one or more of the following patents and patent
applications US 8,203,492; US 8,237,615; PCT/EP2013/064692; WO2014/012842; US
62/028,494; US 62/072,671; and other domestic and international patents pending. Additional
information about patents related to this product is available at
www.fractusantennas.com/virtual-antenna/.
A
B
C
D
E
APPLICATION NOTES
Last updated on November 2016
© 2016 FRACTUS ANTENNAS, S.L. - 9
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 note 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.
902 – 928 MHz
Value
Part Number
30 nH
LQW18AN30NG00
39 nH
LQW18AN39NG00
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 902 – 928 MHz from the evaluation board (¡Error! No se
encuentra el origen de la referencia.).
APPLICATION NOTES
Last updated on November 2016
© 2016 FRACTUS ANTENNAS, S.L. - 10
3.5. RADIATION PATTERNS (902-928 MHz), GAIN, AND EFFICIENCY
Measurement System Set-Up
Evaluation Board in Plane XY
= 90º Plane XY at 915 MHz
= 0º Plane XZ at 915 MHz
= 90º Plane YZ at 915 MHz
Gain
Peak Gain
2.1 dBi
Average Gain across the band
2.0 dBi
Gain Range across the band (min, max)
1.9 <–> 2.1 dBi
Efficiency
Peak Efficiency
90.2 %
Average Efficiency across the band
87.7 %
Efficiency Range across the band (min, max)
84.8 – 90.2 %
Table 4 – Antenna Gain and Total Efficiency from the evaluation board (Figure 4) within the 902 – 928
MHz frequency range. Measures made in the Satimo STARGATE 32 anechoic chamber.
APPLICATION NOTES
Last updated on November 2016
© 2016 FRACTUS ANTENNAS, S.L. - 11
4. EVALUATION BOARD 863-928 MHz
4.1. QUICK REFERENCE GUIDE
Technical features
863 – 928 MHz
Average Efficiency
> 85.0 %
Peak Gain
2.2 dBi
VSWR
< 2:1
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 5 – Technical Features. Measures from the evaluation board. See Figure 7.
4.2. EVALUATION BOARD
This Evaluation Board EB_FR01-S4-224-868-915 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 863 MHz to 928 MHz, through a single input/output
port.
Measure
mm
A
131
B
120
C
60
D
8.0
E
5.0
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 7 – EB_FR01-S4-224-868-915. Evaluation Board
providing operation from 863 MHz to 928 MHz.
This product and its use is protected by at least one or more of the following patents and patent
applications US 8,203,492; US 8,237,615; PCT/EP2013/064692; WO2014/012842; US
62/028,494; US 62/072,671; and other domestic and international patents pending. Additional
information about patents related to this product is available at
www.fractusantennas.com/virtual-antenna/.
A
B
C
D
E
APPLICATION NOTES
Last updated on November 2016
© 2016 FRACTUS ANTENNAS, S.L. - 12
4.3. 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 note 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.
863 – 928 MHz
Value
Part Number
24 nH
LQW18AN24NG00
8.2 nH
LQW18AN8N2C80
2 pF
GJM1555C1H2R0WB01
Figure 8 – Matching Network implemented in the evaluation board (Figure 7)
4.4. VSWR AND TOTAL EFFICIENCY
VSWR (Voltage Standing Wave Ratio) and Total Efficiency versus Frequency (GHz).
Figure 9 – VSWR and Total Efficiency for the 863 – 928 MHz from the evaluation board (Figure 7).
APPLICATION NOTES
Last updated on November 2016
© 2016 FRACTUS ANTENNAS, S.L. - 13
4.5. RADIATION PATTERNS (863-928 MHz), GAIN, AND EFFICIENCY
Measurement System Set-Up
Evaluation Board in Plane XY
= 90º Plane XY at 868 MHz and 915 MHz
= 0º Plane XZ at 868 MHz and 915 MHz
= 90º Plane YZ at 868 MHz and 915 MHz
Gain
Peak Gain
2.2 dBi
Average Gain across the band
1.9 dBi
Gain Range across the band (min, max)
1.6 <-> 2.2 dBi
Efficiency
Peak Efficiency
92.8 %
Average Efficiency across the band
87.0 %
Efficiency Range across the band (min, max)
82.1 – 92.8 %
Table 6 – Antenna Gain and Total Efficiency from the evaluation board (Figure 7) within the 863 – 928
MHz frequency range. Measures made in the Satimo STARGATE 32 anechoic chamber.
APPLICATION NOTES
Last updated on November 2016
© 2016 FRACTUS ANTENNAS, S.L. - 14
5. EVALUATION BOARD CR80 863-870 MHz
5.1. QUICK REFERENCE GUIDE
Technical features
863 – 870 MHz
Average Efficiency
> 60.0 %
Peak Gain
0.2 dBi
VSWR
< 2:1
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 7 – Technical Features. Measures from the evaluation board. See Figure 10.
5.2. EVALUATION BOARD
This Evaluation Board EB_FR01-S4-224-CR80-868 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 863 MHz to 870 MHz, through a single input/output
port.
Measure
mm
A
86
B
75
C
54
D
8.0
E
5.0
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 10 – EB_FR01-S4-224-CR80-868. Evaluation Board
providing operation from 863 MHz to 870 MHz.
This product and its use is protected by at least one or more of the following patents and patent
applications US 8,203,492; US 8,237,615; PCT/EP2013/064692; WO2014/012842; US
62/028,494; US 62/072,671; and 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 November 2016
© 2016 FRACTUS ANTENNAS, S.L. - 15
5.3. 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 note 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.
863 – 870 MHz
Value
Part Number
30 nH
LQW18AN30NG00
13 nH
LQW18AN13NG00
3 nH
LQW15AN3N0B80D
Figure 11 – Matching Network implemented in the evaluation board (Figure 10)
5.4. VSWR AND TOTAL EFFICIENCY
VSWR (Voltage Standing Wave Ratio) and Total Efficiency versus Frequency (GHz).
Figure 12 – VSWR and Total Efficiency for the 863 – 870 MHz from the evaluation board (Figure 10).
APPLICATION NOTES
Last updated on November 2016
© 2016 FRACTUS ANTENNAS, S.L. - 16
5.5. RADIATION PATTERNS (863-870 MHz), GAIN, AND EFFICIENCY
Measurement System Set-Up
Evaluation Board in Plane XY
= 90º Plane XY at 868 MHz
= 0º Plane XZ at 868 MHz
= 90º Plane YZ at 868 MHz
Gain
Peak Gain
0.2 dBi
Average Gain across the band
0.1 dBi
Gain Range across the band (min, max)
-0.2 <–> 0.2 dBi
Efficiency
Peak Efficiency
65.7 %
Average Efficiency across the band
63.7 %
Efficiency Range across the band (min, max)
60.2 – 65.7 %
Table 8 – Antenna Gain and Total Efficiency from the evaluation board (Figure 10) within the 863 – 870
MHz frequency range. Measures made in the Satimo STARGATE 32 anechoic chamber.
APPLICATION NOTES
Last updated on November 2016
© 2016 FRACTUS ANTENNAS, S.L. - 17
6. EVALUATION BOARD CR80 902-928 MHz
6.1. QUICK REFERENCE GUIDE
Technical features
902 – 928 MHz
Average Efficiency
> 60 %
Peak Gain
0.6 dBi
VSWR
< 2:1
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 9 – Technical Features. Measures from the evaluation board. See Figure 13.
6.2. EVALUATION BOARD
This Evaluation Board EB_FR01-S4-224-CR80-915 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 902 MHz to 928 MHz, through a single input/output
port.
Measure
mm
A
86
B
75
C
54
D
8.0
E
5.0
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 13 – EB_FR01-S4-224-915. Evaluation Board
providing operation from 902 MHz to 928 MHz.
This product and its use is protected by at least one or more of the following patents and patent
applications US 8,203,492; US 8,237,615; PCT/EP2013/064692; WO2014/012842; US
62/028,494; US 62/072,671; and 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 November 2016
© 2016 FRACTUS ANTENNAS, S.L. - 18
6.3. 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 note 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.
902 – 928 MHz
Value
Part Number
27 nH
LQW18AN27NG10
13 nH
LQW18AN13NG00
2.4 nH
LQW18AN2N4C80
Figure 14 – Matching Network implemented in the evaluation board (Figure 13)
6.4. VSWR AND TOTAL EFFICIENCY
VSWR (Voltage Standing Wave Ratio) and Total Efficiency versus Frequency (GHz).
Figure 15 – VSWR and Total Efficiency for the 902 – 928 MHz from the evaluation board (Figure 13).
APPLICATION NOTES
Last updated on November 2016
© 2016 FRACTUS ANTENNAS, S.L. - 19
6.5. RADIATION PATTERNS (902-928 MHz), GAIN, AND EFFICIENCY
Measurement System Set-Up
Evaluation Board in Plane XY
= 90º Plane XY at 915 MHz
= 0º Plane XZ at 915 MHz
= 90º Plane YZ at 915 MHz
Gain
Peak Gain
0.6 dBi
Average Gain across the band
0.4 dBi
Gain Range across the band (min, max)
0.1 <–> 0.6 dBi
Efficiency
Peak Efficiency
70.6 %
Average Efficiency across the band
67.4 %
Efficiency Range across the band (min, max)
62.7 – 70.6 %
Table 10 – Antenna Gain and Total Efficiency from the evaluation board (Figure 1) within the 902 – 928
MHz frequency range. Measures made in the Satimo STARGATE 32 anechoic chamber.
APPLICATION NOTES
Last updated on November 2016
© 2016 FRACTUS ANTENNAS, S.L. - 20
7. EVALUATION BOARD CR80 863-928 MHz
7.1. QUICK REFERENCE GUIDE
Technical features
863 – 928 MHz
Average Efficiency
> 55.0 %
Peak Gain
0.4 dBi
VSWR
< 2.5:1
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 11 – Technical Features. Measures from the evaluation board. See Figure 16.
7.2. EVALUATION BOARD
This Evaluation Board EB_FR01-S4-224-CR80-868-915 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 863 MHz to 928 MHz, through a single
input/output port.
Measure
mm
A
86
B
75
C
54
D
8.0
E
5.0
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 16 – EB_FR01-S4-224-CR80-868-915. Evaluation
Board providing operation from 863 MHz to 928 MHz.
This product and its use is protected by at least one or more of the following patents and patent
applications US 8,203,492; US 8,237,615; PCT/EP2013/064692; WO2014/012842; US
62/028,494; US 62/072,671; and 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 November 2016
© 2016 FRACTUS ANTENNAS, S.L. - 21
7.3. 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 note 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.
863 – 928 MHz
Value
Part Number
24 nH
LQW18AN24NG00
7.5 nH
LQW18AN7N5C80
1.8 pF
GJM1555C1H1R8WB01
Figure 17 – Matching Network implemented in the evaluation board (Figure 16)
7.4. VSWR AND TOTAL EFFICIENCY
VSWR (Voltage Standing Wave Ratio) and Total Efficiency versus Frequency (GHz).
Figure 18 – VSWR and Total Efficiency for the 863 – 928 MHz from the evaluation board (Figure 16).
APPLICATION NOTES
Last updated on November 2016
© 2016 FRACTUS ANTENNAS, S.L. - 22
7.5. RADIATION PATTERNS (863-928 MHz), GAIN, AND EFFICIENCY
Measurement System Set-Up
Evaluation Board in Plane XY
= 90º Plane XY at 868 MHz and 915 MHz
= 0º Plane XZ at 868 MHz and 915 MHz
= 90º Plane YZ at 868 MHz and 915 MHz
Gain
Peak Gain
0.4 dBi
Average Gain across the band
-0.1 dBi
Gain Range across the band (min, max)
-1.0 <–> 0.4 dBi
Efficiency
Peak Efficiency
67.3 %
Average Efficiency across the band
61.2 %
Efficiency Range across the band (min, max)
50.8 – 67.3 %
Table 12 – Antenna Gain and Total Efficiency from the evaluation board (Figure 16) within the 863 – 928
MHz frequency range. Measures made in the Satimo STARGATE 32 anechoic chamber.