rf transmitter / reciever

[ace3518]

How do you keep transmitter leakage power from frying the reciever in a single antenna wireless application.


In that same circuit how would you determine the duplexer isolatoin to prevent the transmiter from interfering with low level reciever signals. T = 300K BW = 300kHz

Reciever noise figure is 2dB Transmitter output power = 1W

 

[fil]

use pin diodes to shunt the signal and a quarter wave transformer between the antenna and pin diode at the frequency of transmission - assuming it is the same as the reception freq
or do you want to use the system in duplex mode?
try a search on amwireless for t/r switches

 

[jbartos]

Suggestion: Visit

http://www.wirelessapplications.com/wireless/services/lostFound/images/cell_332_Final.pdf

http://www.altran.com.pl/Sigma/Pmr/Duplexer/TCL810.pdf

http://www.repeater-builder.com/rbtip/2mduplexer.html

http://cp.literature.agilent.com/litweb/pdf/5968-8987E.pdf

etc. for more info.

 

[jbartos]

Small encore: Visit

http://www.seits.org/duplexer/duplexer.htm

for more info, pass and reject frequencies