Invention Grant
- Patent Title: Level shifting switch driver on GaAs pHEMT
- Patent Title (中): GaAs pHEMT上的电平转换开关驱动器
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Application No.: US11964886Application Date: 2007-12-27
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Publication No.: US07863964B2Publication Date: 2011-01-04
- Inventor: Scott K. Suko , Andrew R. Passerelli , Gregory D. Nachtreib
- Applicant: Scott K. Suko , Andrew R. Passerelli , Gregory D. Nachtreib
- Applicant Address: US CA Los Angeles
- Assignee: Northrop Grumman Systems Corporation
- Current Assignee: Northrop Grumman Systems Corporation
- Current Assignee Address: US CA Los Angeles
- Agency: Marsteller & Associates, P.C.
- Main IPC: H03K17/00
- IPC: H03K17/00

Abstract:
A radio frequency semiconductor switching device (S) is formed on an MMIC structure (C) including a switching circuit element (12) having four semiconductor switching units (68, 70) with each adapted for receiving a gate control signal. A level shift circuit (10) generates a biasing voltage signal communicated of the switching units (68, 70) for biasing the switching units (68), and provides an output that swings between approximately one diode drop above ground and a negative voltage to bias the switching circuit elements (68 and 70) for reduced loss. The level shift circuit (10) is responsive to an externally provided control signal (58). The switching units (68, 70) are formed into a grouping of at least, a first and a second set (76, 78) of interconnected semiconductor switching units (68, 70) with each set (76, 78) having gates of at least two of the interconnected switching units (68, 70) connected with the level shift circuit output (60, 62). Both the switching units (68, 70) and the level shift circuit (10) are formed on the MMIC structure (C).
Public/Granted literature
- US20090167409A1 LEVEL SHIFTING SWITCH DRIVER ON GAAS PHEMPT Public/Granted day:2009-07-02
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