Waveguide pressure window
Waveguide pressure window
(OP)
If you had to make a waveguide pressure window at 2.45 GHz, narrowband, 30 KW CW, 100 PSIG pressure, and 700 deg F temperature on one side, other than rolling on the floor laughing, how would you recommend getting started? What window material, how would you bond it to the flange, what flange material(s), etc? Thanks
Rich
Rich
www.MaguffinMicrowave.com
Maguffin Microwave wireless design consulting





RE: Waveguide pressure window
Find Radar designers from the AOC (probably older folk).
Some of the present shipboard systems have pressure windows and their peak power is very high. I worked on some for Raytheon.
MDL makes them "Waveguide Pressure Windows".
Search Patents, they tell everything about a design.
kch
RE: Waveguide pressure window
www.MaguffinMicrowave.com
Maguffin Microwave wireless design consulting
RE: Waveguide pressure window
What's on the other side of the joint?
RE: Waveguide pressure window
Some make various types of glass windows that are bonded to a kovar ring. The kovar ring is then soldered into the flange. But that requires the flange temperature to be considerably below 600 F, or the solder melts/weakens. Higher temperature solders will crack the glass.
I am hoping for some newer technology, like laser welding the ring to the flange, metal to metal compression seal (like on a hermetic sma connector, only bigger in scale), or forming the glass seal directly into the flange without the use of soft solder.
To handle the pressure, we are talking about a pretty thick piece of glass or ceramic in the window.
www.MaguffinMicrowave.com
Maguffin Microwave wireless design consulting
RE: Waveguide pressure window
My thinking is basically you have 700 degrees somewhere (presumably in the sample being heated by the 2.4 GHz), but it doesn't NEED to be 700 degrees at the flange.
RE: Waveguide pressure window
www.MaguffinMicrowave.com
Maguffin Microwave wireless design consulting