Fractus Antennas DUO mXTEND, User Manual

Page: 6 / 16

USER MANUAL
DUO mXTEND
TM
(NN03-320)
Last updated on July 2019
© 2019 FRACTUS ANTENNAS, S.L. -
6
2.2.1. MATCHING NETWORK
DUO mXTEND
TM
needs two matching networks to connect to your device, a first for the
Bluetooth port, a second for the GNSS one (Figure 2). This section describes in (
Figure 3
) a
suitable matching network for DUO mXTEND
TM
and the resulting product specs when measured
in the reference evaluation board (EB_NN03-320-m-GNSS-BT) described in the previous
section. Please note that different tracking devices with different form factors, RF ground planes
and nearby components may need a different matching network. If you need assistance to
design
your matching network beyond this application note, please contact
support@fractusantennas.com , or try our free-of-charge NN Wireless Fast-Track design
service, you will get your chip antenna design including a custom matching network for your
device in 24h
1
. Other
related to NN’s range of R&D services is available at:
https://www.fractusantennas.com/rdservices/
Figure 2
–
Matching network distribution in the Evalution Board ( Figure 1).
1561 MHz
– 1606 MHz and 2400 MHz – 2500 MHz
MN GNSS
Value Part Number
2.4 nH LQW15AN2N4C00
2.0 pF GJM1555C1H2R0WB01
0.7 pF GJM1555C1HR70WB01
2.8 pF GJM1555C1H2R8WB01
MN BT
Value Part Number
0
Ω
-
4.7 nH LQW15AN4N7G80
4.7 nH LQW15AN4N7G80
0
Ω
-
Figure 3
–
Matching network implemented in the Evaluation Board 1 port (Figure 1).
1
See terms and conditions for a free NN Wireless Fast-Track service at: https://www.fractusantennas.com/fast-track-
project/
2.4nH
2.0pF
0.7pF
2.8pF
DUO
mXTEND TM
DUO
mXTEND TM
0 Ω 0 Ω 4.7nH
4.7nH