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Kwok Kee Ma, 767400 Mcnerney Ave NE, Albuquerque, NM 87110

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7400 Mcnerney Ave NE, Albuquerque, NM 87110    505-2399229    505-8834438   

2909 Hermosa Dr NE, Albuquerque, NM 87110   

9309 Indian School Rd NE, Albuquerque, NM 87112   

Los Lunas, NM   

4071 Pai St, Kalaheo, HI 96741   

Edgewood, NM   

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Kwok Kee Ma



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Ma Kwok Po

Ma Kwok Po (), also known as Panda ma, is a former Hong Kong national windsurfer. Ma is now working for W.A.H.K for being a windsurfing coach who ...

Us Patents

Radiation-Hardened Transistor And Integrated Circuit

US Patent:
7298010, Nov 20, 2007
Feb 21, 2006
Appl. No.:
Kwok K. Ma - Albuquerque NM, US
Sandia Corporation - Albuquerque NM
International Classification:
H01L 23/62
US Classification:
257359, 257358, 257357, 257369, 257371, 327112, 327537, 327108
A composite transistor is disclosed for use in radiation hardening a CMOS IC formed on an SOI or bulk semiconductor substrate. The composite transistor has a circuit transistor and a blocking transistor connected in series with a common gate connection. A body terminal of the blocking transistor is connected only to a source terminal thereof, and to no other connection point. The blocking transistor acts to prevent a single-event transient (SET) occurring in the circuit transistor from being coupled outside the composite transistor. Similarly, when a SET occurs in the blocking transistor, the circuit transistor prevents the SET from being coupled outside the composite transistor. N-type and P-type composite transistors can be used for each and every transistor in the CMOS IC to radiation harden the IC, and can be used to form inverters and transmission gates which are the building blocks of CMOS ICs.

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