A "hybrid" circuit for RF? Interesting.. One of the founders of a past start-up I worked at wanted to use hybrid circuits for digital I/O cells for ICs (at year

A "hybrid" circuit for RF? Interesting.. One of the founders of a past start-up I worked at wanted to use hybrid circuits for digital I/O cells for ICs (at year 2000 LVDS rates- they ended up using plain LVDS instead). I've made them myself using discrete RS-485 drivers for 10 MHz rates. Of course gigabit ethernet on RJ45 uses this technology: http://embedded-computing.com/pdfs/CDT.Fall00.pdf http://embedded-computing.com/pdfs/CDT.Fall00.pdf RADAR systems have had to deal with a similar problem for a long time. In RADAR you don't have to receive and transmit at the same time, but you do want to share the antenna, and the transmitter is very powerful. http://www.radartutorial.eu/06.antennas/an19.en.html http://www.radartutorial.eu/06.antennas/an19.en.html