TOBY-L2 and MPCI-L2 series - System Integration Manual
UBX-13004618 - R28
Design-in
Page 134 of 164
2.17.3
Antenna checklist
Antenna termination should provide 50
characteristic impedance with V.S.W.R at least less
than 3:1 (recommended 2:1) on operating bands in deployment geographical area.
Follow the recommendations of the antenna producer for correct antenna installation and
deployment (PCB layout and matching circuitry).
Ensure compliance with any regulatory agency RF radiation requirement, as reported in
sections
for products marked with the FCC and/or IC.
Ensure high and similar efficiency for both the primary (ANT1) and the secondary (ANT2)
antenna.
Ensure high isolation between the primary (ANT1) and the secondary (ANT2) antenna.
Ensure low Envelope Correlation Coefficient between the primary (ANT1) and the secondary
(ANT2) antenna: the 3D antenna radiation patterns should have radiation lobes in different
directions.
Ensure high isolation between the cellular antennas and any other antenna or transmitter.