Accession Number:

AD0602270

Title:

MINIATURE THIN FILM INDUCTORS (MODIFICATION NO. 2).

Descriptive Note:

Final development rept. for 27 May 63-27 May 64,

Corporate Author:

MOTOROLA INC SCOTTSDALE ARIZ

Personal Author(s):

Report Date:

1964-06-30

Pagination or Media Count:

78.0

Abstract:

The report describes a program directed toward the development of techniques for fabricating miniature thin-film inductors. The basic device consists of a flat spiral conducting path deposited on a bulk ferrite substrate and encapsulated with a ferrite film deposit. The goal of the program was to fabricate these inductances in a range from 38 to 1000 microhenries with a Q-value of 100 measured at 1 Mc. The technique for depositing the ferrite film by the spray hydrolysis of a chloride solution is described. The spiral coils were made from gold and deposited by a combination of vacuum evaporation and electrodeposition techniques. The maximum air core coil inductance obtained in an area 0.3 inch square was 1.8 microhenries. The largest inductance value obtained for a single encapsulated coil was 54 microhenries with a Q-value of 6 at 1 Mc. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE