USER MANUAL
DUO mXTEND
TM
(NN03-320)
Last updated on July 2019
© 2019 FRACTUS ANTENNAS, S.L. -
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To ensure optimal results, the use of high-quality factor (Q) and tight tolerance components is
highly recommended (e.g. Murata components with part numbers as in Figure 3). The antenna
performance is always conditioned by its operating environment so that different devices with
different printed circuit board sizes,
components nearby the antenna, LCD’s, batteries, covers,
connectors, etc. affect the antenna performance. Accordingly, 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 of the antenna element. Do it in the ground plane area, not in the
clearance area. By tuning the matching network in your final design with your final surrounding
components (batteries, displays, covers, etc.) you will be able to optimize the antenna
performance without changing the antenna part.
2.2.2.
VSWR AND TOTAL EFFICIENCY
VSWR (Voltage Standing Wave Ratio) and Total Efficiency versus Frequency (GHz).
Figure 4
–
VSWR and Total Efficiency at BeiDou E1 band (1561 MHz), GPS L1 band and GALILEO
E1 band (1575 MHz), GLONASS L1 band (from 1598 to 1606 MHz) (from the Evaluation Board)
(Figure 1).
Figure 5
– VSWR and Total Efficiency for the 2400 – 2500 MHz (from the Evaluation Board) (Figure
