NJ Roadmap
New Member
Ok so I'm using a 433MHz quarter-wave antenna for a TX and RX module and I need to switch the antenna between the TX and the RX module since both shouldn't be connected to the antenna at the same time. I understand that PIN-diode switching is reliable and has been done for years. But I'm no RF pro so I'm going to need some help!
Here's the good info I've found, all I need is to know how to interpret the variables in the equations given (all the info is on Pg.1 and Pg.2):
https://www.avagotech.com/assets/downloadDocument.do?id=1624
I want to replace the lambda/4 transmission line shown on Pg.1 with the equivalent circuit shown on Pg.2, but I'm not sure what Zo is!
Also has anyone done PIN-diode-based switching in the past?
p.s. As much as it would make it a lot easier, I don't want to use the IC mentioned at the bottom of Pg.2 for many reasons, the main one being cost.
Here's the good info I've found, all I need is to know how to interpret the variables in the equations given (all the info is on Pg.1 and Pg.2):
https://www.avagotech.com/assets/downloadDocument.do?id=1624
I want to replace the lambda/4 transmission line shown on Pg.1 with the equivalent circuit shown on Pg.2, but I'm not sure what Zo is!
Also has anyone done PIN-diode-based switching in the past?
p.s. As much as it would make it a lot easier, I don't want to use the IC mentioned at the bottom of Pg.2 for many reasons, the main one being cost.