ISSTT Proceedings

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Planar Balanced Doubler Chip to 320 GHz

Authors:
Brian J. Rizzi, Thomas W. Crowe
Abstract:
Schottky barrier varactor diodes are used as frequency multipliers in the local oscillator sources of heterodyne receivers at millimeter and submillimeter wavelengths. Whisker contacted GaAs Schottky barrier varactor diodes have been the most common frequency multiplier element, and have been used in heterodyne receivers extending well into the submillimeter wavelength range. Although whisker contacted varactor diodes have proven very effective, much work has gone into developing varactor diodes which are more mechanically robust and have the potential to deliver larger amounts of power. This paper reviews the development of a planar varactor diode chip to be used in a balanced doubler to about 320 GHz. The development of a multiplier chain to 1 THz using planar varactor diodes has continued. The proposed chain consists of two doublers (80 to 160 GHz and 160 to 320 GHz) and a tripler (320 to 960 GHz). The doubler chips incorporate multiple diodes for increased power handling ability, and are designed to be used in a balanced doubler circuit designed by Erickson. The 320 GHz doubler chip is based upon the 160 GHz chip, which has been used in the balanced doubler circuit to generate record output power of 55 mW at 170 GHz.
Categories:
Multipliers, Varactors
Year:
1994
Session:
6
Full-text:
Download a PDF of this paper.
Page Number(s):
414-425