ISSTT Proceedings

ISSTT Proceedings

You searched for:search icon

No Keywords
Showing 0 of items from your search. Start over 

Effect of Cooling on the Efficiency of Schottky Varactor Frequency Multipliers at Millimeter Waves

Authors:
Jyrki Louhi, Antto Räisänen, Neal Erickson
Abstract:
The efficiency of the Schottky diode multiplier can be increased by cooling the diode to 77 K. The main reason for better efficiency is the increased mobility of the free carriers. Because of that the series resistance decreases and a few dB higher efficiency can be expected at low input power levels. At high output frequencies and at high power levels the current saturation decreases the efficiency of the multiplication. When the diode is cooled the maximum current of the diode increases and much more output power can be expected. There are also slight changes in the I — V characteristic and in the diode junction capacitance, but they have a negligible effect on the efficiency of the multiplier.
Categories:
Varactors
Year:
1992
Session:
2
Full-text:
Download a PDF of this paper.
Page Number(s):
134-145