Heterojunction IMPATT diodes, which incorporate an abrupt GaAs/Al/sub 0.3/Ga/sub 0.7/As p/N heterojunction in place of the standard p/n junction, have shown a number of significant properties that represent a considerable technological advance. Ku-band experimental devices exhibit up to 2.0 dB higher power, superior DC characteristics, and 3-6 dB less phase noise content. These and other properties are examined in detail, and a first-order theory of operation is proposed.>
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M.J. Bailey (1992) studied this question.
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