Surface Charging on High-power rf Windows by UV Irradiation

Development of High Power Cw Rf Windows

Over the past year Advanced Energy Systems Inc has undertaken a program to develop CW High Power RF windows utilising a unique fabrication approach. Our fabrication approach should result in a window that inherently places low stress on the ceramic. The design will provide for excellent cooling of the ceramic, which when combined with the use of a ceramic with a very high thermal conductivity, ...

High Temperature, High Power RF Life Testing of GaN on SiC RF Power Transistors

As GaN power device technology matures and gains acceptance in the market place, suppliers who provide products using this promising technology must prove its reliability. This paper will provide an overview of the testing approaches used to establish failure rates and will provide a comparison of DC and RF based HTOL methods. The primary focus of this paper will be the high power RF HTOL test ...

High Performance Double-sided Psa Tape Produced by Uv Irradiation

High Power Testing Results of the X-band Mixed-mode Rf Windows for Linear Colliders

In this paper, we summarize the high power testing results of the X-band mixed-mode RF windows at KEK and SLAC for linear colliders. The main feature of these windows is that the combination of modes on the surface of the ceramic significantly decreases the electric and magnetic fields in the junction between the ceramic and the metal. So far two types of high power windows (with the diameter o...

Polyethylene glycol degradation by UV irradiation

Degradation or polyethylene glycol has been studi ed by UV irradiation. A drastic change in the morphology from spherulite to rhythmic pattern has been observed under polarized light microscope when exposed to UV light. Molecular weight of PEG. Rr value and melting point have been recorded after UV exposure. On UV exposure there has also been a change in UV. IR and powder X-ray diffraction patt...