Sigfox Sens'it Implementation Rules & Integration Manualline Download Page 8

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Antenna tuning
and matching
parameters

Sigfox presentation

Frequency tuning

The size of slot A can be modified to tune
the resonance frequency of the antenna

• Slot A length increase



Fc move

down

• Slot A length decrease



Fc move up

Antenna Matching

Adjusting the dimension B will impact the
antenna matching (impedance of the
antenna)

As any antenna, the

sens’it antenna uses the PCB to operate and is

impacted by its surrounding (e.g. casing…)

Therefore, implementing the

sens’it antenna in your device can require

some tuning and matching in order to optimize the antenna
performance.

This optimization can be done by adjusting two parameters of the PCB
printed part of the antenna.

Summary of Contents for Sens'it

Page 1: ...Sens it antenna Implementation rules Integration guideline ...

Page 2: ...1 Sens it antenna overview 2 Antenna Performance overview on Sens it device 3 Integration guidelines 4 Antenna tuning and matching parameters ...

Page 3: ...mplement this antenna in other devices however some precaution must be taken In most cases only the printed part should be modified in order to implement this antenna in another device This document describes how to tune and match the sens it antenna and provide recommendations on how to implement this antenna into another device Sigfox presentation 3 ...

Page 4: ...s it device The radiation pattern is mainly driven by the size and form factor of the PCB as well as the antenna location Changing one of those three parameter can impact the radiation pattern Sigfox presentation 4 Antenna gain 1dBi Antenna efficiency 1dB ERP 13dBm for 14dBm input power EIRP 23dBm for 22dBm input power ...

Page 5: ...The sens it antenna has enough bandwidth to cover the whole Sigfox frequency range Return loss below 8dB over whole Sigfox frequency range Reference impedance 50Ohms Sigfox presentation 5 8 Measured Return Loss plot Smith Chart ...

Page 7: ...profile component include CMS chicken food components eg capacitors coils resistor Sigfox presentation 7 All component allowed Low profile components allowed No components allowed All component allowed Low profile components allowed No components allowed Back side Front side Front side Back side ...

Page 9: ...Thank you ...