Parts List/Tune Up Info

XXI-Lab
NETATMO –– Antenna Expertise – ZED US product
Antenna matching and measurement report
Document reference
Date
Version
Page
Exp-NETATMO_Match_ZED-US_20-11-2020
20/11/2020
1.0
4
2 Wifi Antenna Performances
2.1 Antenna Matching
With the antenna matching circuit used by default the tuning is not good but can be considered as acceptable.
figure 1. antenna matching circuit ‘’Ant-3.0nH shunt-1nH serie- 0.5pF shunt’’ used by default
figure 2. Adaptation of the antenna with the matching used as default : ’Ant-3.0nH shunt-1nH
serie- 0.5pF shunt’’
A new matching circuit has been designed to improve the antenna tuning. This circuit is the following: