NETATMO –– Antenna Expertise – WNAL US products Antenna matching and measurement report XXI-Lab Antenna matching and measurement report Project : WNAL-US XXI-Lab Customer Name Jean-Michel Monteix Name Frederic Esnault Date : 28/04/2021 Company NETATMO Date Version 28/04/2021 1.0 Référence Version History Exp-NETATMO_Match_WNAL-US_28-04-2021 Creation Document reference Exp-NETATMO_Match_WNAL-US_28-04-2021 Date Version Page 28/04/2021 1.
XXI-Lab NETATMO –– Antenna Expertise – WNAL US products Antenna matching and measurement report Sommaire 1 Introduction...................................................................................................................................... 3 1.1 Type of service : .................................................................................................................................. 3 1.2 Purpose of the study ......................................................................
NETATMO –– Antenna Expertise – WNAL US products Antenna matching and measurement report XXI-Lab 1 Introduction 1.1 Type of service : Tuning of antenna matching circuit at 2.4GHz (Ref XXI-Lab: Ant_dev) 1.2 Purpose of the study Search for the optimal matching networks for the WNAL-US product antennas at 2.4GHz (Zigbee). 1.3 Tools used 1.
NETATMO –– Antenna Expertise – WNAL US products Antenna matching and measurement report XXI-Lab 2 The products WNAL23, WNAL 33, WNAL43 & WNLA63 The products referred to in this report are those in the following figure : figure 1. From top to bottom and left to right, WNAL 63, WNAL23, WNAL33 & WNAL43 Products WNAL 23 & 63 have the same PCB but not the same partlist. Products WNAL 33 and WNAL 43 have the same PCB but not the same SW.
NETATMO –– Antenna Expertise – WNAL US products Antenna matching and measurement report XXI-Lab The antenna matching with this matching network is the following for the WNAL23 product: figure 3. WNAL23 antenna matching with the default matching Network The antenna matching can be considered as acceptable but can be improved. The WNAL63 antenna matching with the default matching network is very similar than the WNAL23 one. It is the following: figure 4.
NETATMO –– Antenna Expertise – WNAL US products Antenna matching and measurement report XXI-Lab The WNAL33 antenna matching with the default matching network is the following: figure 5. WNAL33 antenna matching with the default matching Network Matching performance is good nevertheless other matching network have been studied to try improving the bandwidth ripple. The WNAL43 antenna matching with the default matching network is the following: figure 6.
XXI-Lab NETATMO –– Antenna Expertise – WNAL US products Antenna matching and measurement report For product WNAL 23 & 63, among all matching network studied, the one which give the best radiated performances is the following: figure 7. antenna matching circuit proposed for WNAL23 & WNAL63 product: ‘’Ant-1.5pf shunt – 3.3nH serie’’ With this matching network proposed, the WNAL23 frequency response is the one displayed below: figure 8.
NETATMO –– Antenna Expertise – WNAL US products Antenna matching and measurement report XXI-Lab figure 9. Frequency response of the WNAL63 antenna with the matching network proposed : ‘’Ant-1.5pf shunt – 3.3nH seriee’’ With the proposed matching network, the performance is good. For product WNAL 33 & 43, among all matching network studied, the one which give the best radiated performances is the following: figure 10. antenna matching circuit proposed for WNAL33 & WNAL43 product: ‘’Ant-4.7nH shunt – 1.
XXI-Lab NETATMO –– Antenna Expertise – WNAL US products Antenna matching and measurement report With this matching network proposed, the WNAL33 frequency response is the one displayed below: figure 11. Frequency response of the WNAL23 antenna with the matching network proposed : ‘’Ant-4.7nH shunt – 1.5pF serie’’ With the proposed matching network, the performance is good. With this matching network proposed, the WNAL43 frequency response is the one displayed below: figure 12.
XXI-Lab 4 NETATMO –– Antenna Expertise – WNAL US products Antenna matching and measurement report Radiated measurements The measurements were carried out for the H and E planes at the2405, 2440 & 2480MHz frequencies in vertical and horizontal polarization with a step of 1 °. From these results the total polarization was calculated. Measurements have been done using the modem of each product for the antenna matching circuit used by default and for the antenna matching proposed for each product.
NETATMO –– Antenna Expertise – WNAL US products Antenna matching and measurement report XXI-Lab Results normalized are compiled in the table below: WNAL63 – matching default 2405MHz H E 1.15 -0.46 2440MHz H E 1.85 -0.77 2480MHz H E 4.45 2.58 WNAL63 – matching ‘’Ant-1.5pF shunt-3.3nH serie’’ 5.14 3.60 5.92 3.50 4.78 4.90 WNAL23 – matching default 3.60 4.14 3.30 3.93 4.10 1.85 WNAL23 – matching ‘’Ant-1.5pF shunt-3.3nH serie’’ 6.65 5.14 7.23 4.63 7.81 3.
XXI-Lab 5 NETATMO –– Antenna Expertise – WNAL US products Antenna matching and measurement report Conclusion Different matching network have been designed and measured. Among those different circuits, the best has been proposed for each antenna and each product. Proposed matching network are the same for the product couple WNAL63/WNAL23 & WNAL43/WNAL33: product with same PCB. With those matching network radiated power has been improved: between 2.3 & 4.
NETATMO –– Antenna Expertise – WNAL US products Antenna matching and measurement report XXI-Lab 6 Appendix figure 14. From left to right, from top to bottom, Radiation pattern for H & E planes for the 2405, 2440 & 2480MHz frequencies for WNAL63 with default matching network Document reference Exp-NETATMO_Match_WNAL-US_28-04-2021 Date Version Page 28/04/2021 1.
XXI-Lab NETATMO –– Antenna Expertise – WNAL US products Antenna matching and measurement report figure 15. From left to right, from top to bottom, Radiation pattern for H & E planes for the 2405, 2440 & 2480MHz frequencies for WNAL63 with proposed matching network Document reference Exp-NETATMO_Match_WNAL-US_28-04-2021 Date Version Page 28/04/2021 1.
XXI-Lab NETATMO –– Antenna Expertise – WNAL US products Antenna matching and measurement report figure 16. From left to right, from top to bottom, Radiation pattern for H & E planes for the 2405, 2440 & 2480MHz frequencies for WNAL23 with default matching network Document reference Exp-NETATMO_Match_WNAL-US_28-04-2021 Date Version Page 28/04/2021 1.
XXI-Lab NETATMO –– Antenna Expertise – WNAL US products Antenna matching and measurement report figure 17. From left to right, from top to bottom, Radiation pattern for H & E planes for the 2405, 2440 & 2480MHz frequencies for WNAL23 with proposed matching network Document reference Exp-NETATMO_Match_WNAL-US_28-04-2021 Date Version Page 28/04/2021 1.
XXI-Lab NETATMO –– Antenna Expertise – WNAL US products Antenna matching and measurement report figure 18. From left to right, from top to bottom, Radiation pattern for H & E planes for the 2405, 2440 & 2480MHz frequencies for WNAL43 with default matching network Document reference Exp-NETATMO_Match_WNAL-US_28-04-2021 Date Version Page 28/04/2021 1.
XXI-Lab NETATMO –– Antenna Expertise – WNAL US products Antenna matching and measurement report figure 19. From left to right, from top to bottom, Radiation pattern for H & E planes for the 2405, 2440 & 2480MHz frequencies for WNAL43 with proposed matching network Document reference Exp-NETATMO_Match_WNAL-US_28-04-2021 Date Version Page 28/04/2021 1.
XXI-Lab NETATMO –– Antenna Expertise – WNAL US products Antenna matching and measurement report figure 20. From left to right, from top to bottom, Radiation pattern for H & E planes for the 2405, 2440 & 2480MHz frequencies for WNAL33 with default matching network Document reference Exp-NETATMO_Match_WNAL-US_28-04-2021 Date Version Page 28/04/2021 1.
XXI-Lab NETATMO –– Antenna Expertise – WNAL US products Antenna matching and measurement report figure 21. From left to right, from top to bottom, Radiation pattern for H & E planes for the 2405, 2440 & 2480MHz frequencies for WNAL33 with proposed matching network Document reference Exp-NETATMO_Match_WNAL-US_28-04-2021 Date Version Page 28/04/2021 1.
