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CC1101: CC1101: Dual antenna for 315 MHz and 434 MHz

Part Number: CC1101

Tool/software:

Hi,

I need support for 315 MHz and 434 MHz on the same pcb with the same bom. They are not needed concurrently.

In the post https://e2e.ti.com/support/wireless-connectivity/sub-1-ghz-group/sub-1-ghz/f/sub-1-ghz-forum/593392/cc1101-multiband-antenna-from-315-to-902mhz a switch between two antennas was used.

It was proposed to use a wideband balun B0310J50100AHF instead of the discrete one from the datasheet.

What would be the preferred solution for my constellation. Is the discrete balun for 434 MHz from the datasheet usabel?

I need aproximately 5 m range and the device can be used from inside a car.

I want to switch between the following two antennas: ANT-315-HESM and ANT-433-HESM

Thanks in advance.