Electricity: conductors and insulators – Anti-inductive structures – Conductor transposition
Patent
1992-06-26
1994-06-28
Reynolds, Bruce A.
Electricity: conductors and insulators
Anti-inductive structures
Conductor transposition
174 35GC, 174 35MS, 219744, H05K 900
Patent
active
053248872
ABSTRACT:
An absorber for a microwave module and method of fabrication thereof wherein an ink is provided from a mixture of powdered iron and a resin. The ink is then screen printed or mask printed onto the interior surface of the lid of the microwave module in a predetermined pattern to lower the Q of the cavities within the module. The lowered Q suppresses the electromagnetic resonance and thereby minimizes the EMI problems. Furthermore, the absorber material reduces EMI between sections of the module at frequencies where no cavity resonances occur.
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patent: 4970358 (1990-11-01), Brandberg et al.
Catt Martin L.
Fowler Gray E.
Purinton Donald L.
Stiborek Leon
Donaldson Richard L.
Grossman Rene E.
Reynolds Bruce A.
Texas Instruments Incorporated
To Tuan Vinh
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