prototypingfool
Electrical
I prototyping a GPS LNA circuit that shares and antenna with a transmitter (1 watt). I'm trying to find a switch that will protect the LNA when the transmitter is on becuase the isolation is poor and i'm afraid the LNA will be blown.
If i had steady voltage i could simply use a switch and control voltage but don't have that luxury. The only voltage i can use is when the LNA is active (3.3V) for a set time. After the DC shuts off the transmit port goes active.
Is there a SPDT T/R switch available using only one source of voltage to do the switching? Something that doesnt require a control voltage? Thanks in advance!!
If i had steady voltage i could simply use a switch and control voltage but don't have that luxury. The only voltage i can use is when the LNA is active (3.3V) for a set time. After the DC shuts off the transmit port goes active.
Is there a SPDT T/R switch available using only one source of voltage to do the switching? Something that doesnt require a control voltage? Thanks in advance!!