WLAN ( 2.4 Ghz ) AMPLIFIER

[Davenger]

I'm researching the design of a bidirectional amplifier for wlan ( 2.4 Ghz ) applications, like that it appears here (http://www.qsl.net/n9zia/wireless/appendixD.html).
My question is the following one: How i can control the sdpt switchs without having to take to amplifier an extra signal of control? A design with a RF detector is possible?
The two following pictures describe my doubt and put somes ics for the possible design:
**broken link removed**
**broken link removed**

 

[Davenger]

Is a factible solution using a duplexer for tx-rx control ?

 

[vfone]

The switching time is too high when using the RF to drive the WLAN antenna switch.
You cannot use a duplexer in WLAN.

regards

 

[vfone]

Here is an application that probably it will work.
https://www.qsl.net/n9zia/trans/2400_900_new-1.png
On my design I did use a diode detector followed by an amplifier, and no luck.
best