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TRF4140-Q1: TRF4140 - Full Bridge

Part Number: TRF4140-Q1


I read the document "TRF4xxx_SLOA219_Application_Report" and TRF4260 Demo ver 1.0 - SCH.pdf. I'm using TR4260.

Until last day I used for my test Half-bridge configuration. Now I want to increase the distance using Full-bridge configuration.

For this configuration I need to change the jumper on the evaluation board and after set "full bridge" on the RF432 Demo tool.


Unfortunately I see a strange behaviour respect to half bridge. I would have expected a double tension, instead I find it only on the initial part of the TX signal and not on Data message.

 Below photo from the oscilloscope and configuration for full bridge.
Blue/Green Signal from Antenna pin, yellow signal  = blue - green

 


Full Bridge

  
Half Bridge