Interdigital filter apparatus and method for construction

Details Interdigital filter apparatus and method for construction Interdigital filter apparatus and method for construction

1987-09-30

1988-12-20

Goldberg, Howard N.

Metal working

Method of mechanical manufacture

Electrical device making

361394, 361395, 361399, 174 521, 174 523, H01P 1100, H05K 506

Patent

active

047917172

ABSTRACT:
An integrated down converter and interdigital filter apparatus having a down converter and the interdigital filter mounted on the same printed circuit board and installed in the watertight housing. The housing of the interdigital filter is cut from sheet metal and a conductive surface on the printed circuit board as one side. A method for construction of the interdigital filter is also set forth.

REFERENCES:
patent: 3721746 (1973-03-01), Knappenberger
patent: 4190735 (1980-02-01), Checki, Jr.
patent: 4399487 (1983-08-01), Neumann
patent: 4680676 (1987-07-01), Petratos et al.
patent: 4701728 (1987-10-01), Igarashi
MTV/82 Price List, Dec. 15, 1983, Microwave Filter Company, Inc.
Ham Radio Magazine, Jan. 1985.

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