Microwave Diodes - Looking for manufacturer.

[cmos]

Does anybody know any good manufacturers of microwave diodes?

Specifically, I'm looking for rectification that can be operated at essentially as high of a frequency as I can get. This led me to look for Schottky diodes (anybody have a better suggestion?).

So far, all the microwave Schottky diodes I have found use silicon and have a 40 GHz cutoff. However, Sze has a plot (Fig. 37, Ch. 3, 3rd Ed.) that shows GaAs Schottky diodes with cutoff frequencies upwards for 800 GHz! Hell, anybody know where I can get these bad boys?

 

[waht]

Beam lead diodes are popular in millimeter wavelengths, work up to 300 GHz.

One of the manufacturers was Agilent, but they recently sold off their semiconductor division to Avago

http://www.avagotech.com/pages/home/

some of these diode are like $50 bucks a piece and require special bonding and a microscope to attach them to a substrate, or a waveguide.

Another place for millimeter waves:

http://www.virginiadiodes.com/index.php?option=com_content&view=article&id=3&Itemid=3

they have cool gizmos up to a couple THz.

 

[cmos]

Cool stuf; thanks, waht!