Transmitter and Receiver sharing antenna, 433MHz

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fredrik.jacobsson

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Hi,

I'm designing a pcb with both transmitter and receiver for 433MHz and I would like to use only one antenna for both. The transmitter and receiver are ASK and I do not need to send and receive simultaneously, the transmitter is ~10mW.
How do I design a switching/combining circuit?

// Fredrik
 

You can use simple circuit.
Use SPDT to switch between Tx and RX.
i.e common poet connecting to 433Mhz antenna, one end to Tx and the other to RX.
 

I would like not to use a relay, maybe something like this; **broken link removed**, but intgrated on my own pcb... any ideas what's on the abacom module?
 

the link u have given is


The resource you are looking for might have been removed, had its name changed, or is temporarily unavailable.
 

HMC546LP2 from Hittite. Good for TDD system.
 

hi i want to control rc helicopter through laptop as well as video transmission over it so i need a FR transceiver
capable of trans/receiving video data as well as controlling the helicopter atleast of 1km range . . kindly help me out which transceiver i use . . .
 

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