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Sens’it antenna overview Antenna Performance overview on Sens’it device Integration guidelines Antenna tuning and matching parameters...
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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...
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PCB as • Antenna efficiency : -1dB well as the antenna location. • ERP = 13dBm (for 14dBm input power) Changing one of those three • EIRP = 23dBm (for 22dBm input power) parameter can impact the radiation pattern. Sigfox presentation...
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Sens’it antenna Impedance The sens’it antenna has enough bandwidth to cover Measured Return the whole Sigfox frequency Loss plot range. • Return loss below -8dB over whole Sigfox frequency range. • Reference impedance 50Ohms Smith Chart Sigfox presentation...
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The battery can be changed but an antenna tuning may be necessary • Try to keep the battery as far as possible from the antenna and avoid long wire to connect it to the PCB Limited impact Moderate impact High Impact Sigfox presentation...
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Low profile components allowed Low profile components allowed To avoid antenna retuning and matching, respect the All component allowed different component areas. All component allowed Low profile component include CMS chicken food components (eg. Front side capacitors, coils, resistor) Back side Sigfox presentation...
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• 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) Sigfox presentation...
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