Research/Patents/US 5262660
US 5262660

HIGH POWER PSEUDOMORPHIC GALLIUM ARSENIDE HIGH ELECTRON MOBILITY TRANSISTORS

Assignee

TRW INC. A CORP. OF OHIO

Filed

Aug 1, 1991

Granted

Nov 16, 1993

Location

Redondo Beach CA (TRW)

Abstract

A high power pseudomorphic (PM) AlGaAs/InGaAs high electron mobility transistor (HEMT) (26) with improved gain at 94 GHz. The transistor (26) includes an InGaAs quantum well (32) having a silicon planar doping layer (34) located at the bottom. A donor layer (36) comprises AlGaAs with a silicon planar doping layer (37). The resulting transistor (26) exhibits superior gain and noise characteristics that relatively high power levels when operating at 94 GHz. The transistor (26) is produced using an optimized growth process which involves growing the quantum well at a relatively low temperature and then raising the temperature to grow subsequent layers.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

Mar 17, 1992

Rescinded

Mar 26, 1993

Duration

1 year

Inventor

  • 1DWIGHT C. STREIT

Sensitive facility: Redondo Beach CA (TRW)

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Back to patent indexSource: USPTO 35 USC §181 secrecy order records