Filter apparatus

Details Filter apparatus Filter apparatus

1986-12-16

1988-09-20

Nussbaum, Marvin L.

Wave transmission lines and networks

Coupling networks

Frequency domain filters utilizing only lumped parameters

333184, 333185, 333204, H03H 701

Patent

active

047728620

ABSTRACT:
On an upper surface of a substrate (20) a band-pass filter (29) is provided, and on the opposite (lower) surface of a substrate (20) a low-pass filter comprising a conductive layer pattern (27) and capacitors (22,23) is provided, wherein a conductive layers (27) are provided on substantially the entire area of the upper surface excluding portions for terminals and on the lower surface excluding portions for the low-pass filter and the terminals, and by connecting both conductive layers by means of a row of through-hole connections, the input terminal (24) and the output terminal (25) are shielded from each other.

REFERENCES:
patent: 2076248 (1937-04-01), Norton
patent: 2688119 (1954-08-01), Gere
patent: 3991347 (1976-11-01), Hollyday

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