How to choose a RF switch for RF transceiver design?

[Munib]

RF switch selection

I am using a RF transmitter and a RF reciver module,with mcu.These modules are from Linx technologies.
TXM-418-LR
RXM-418-LR

THe working frequency is 418 MHz
Now i want to make a tranceiver using these seperate modules

How can i do this?

First thing which comes to my mind is to use single antenna for both transmitter and receiver and use an RF switch.
Guide me if this the correct approach.if yes then plz specify some RF switch,Plz try to give the part number and if possible approximate price

Another solution which comes to my mind is to use seperate antennas for transmitter and reciver and control the power supply of both modules(means to turn off transmitter when want to reciever and vice versa)

Now specify which method is better?

Note:I want half duplex communication

 

[flatulent]

Re: RF switch selection

You will need a switch that can handle the power of the transmitter. Hittite IC company makes these. **broken link removed** is a selection matrix.

The problem with powering down the transmitter during receive is the time delay for off and on. Your system should take this into account. Two antennas may or may not be more expensive than the switch depending upon how complex they are.

 

[Munib]

Re: RF switch selection

I checked the Link given by you but got confused there.As i m very new to RF field
so plz help me in selecting this RF switch

To view the datasheets for RF modules i am using you can check

**broken link removed**
**broken link removed**

The antenna i am using is a plannar antenna which cost around 3 US dollars