SMC filter and method of manufacture thereof

Details SMC filter and method of manufacture thereof SMC filter and method of manufacture thereof

1986-10-08

1987-12-22

Nussbaum, Marvin L.

Wave transmission lines and networks

Coupling networks

Frequency domain filters utilizing only lumped parameters

29832, 333168, 333184, 333185, H03H 300, H03H 701, H03H 7075

Patent

active

047149051

ABSTRACT:
A microwave bandpass filter for frequencies in the range of 30-3000 MHz comprises a substrate formed from dielectric ceramic sheets fused together and stacked according to a dielectric constant required of the filter capacitors, the plates of which are formed on the substrate. Discrete air core coils, to provide greater frequency selectivity in this particular frequency range, are attached into the circuit on a top surface of the substrate, and a drawn metal can covers the circuitry on the top surface and is soldered to a metallized coating extending over substantially all of the rest of the substrate except for surface mounting lead portions and associated conductive paths. Thus, EMI and RFI shielding is provided by the combination of the metal can and the ground plane of the circuit. The metal can portion of the shield also provides physical protection for the fragile air core coils, while presenting a solid, uniform profile for engagement by a pick and place head during subsequent handling of the finished component.

REFERENCES:
patent: 4266206 (1981-05-01), Bedard et al.
patent: 4410874 (1983-10-01), Scapple et al.
patent: 4455540 (1984-06-01), Henriot et al.
patent: 4581795 (1986-04-01), Mobbs et al.

Affiliated with

Also associated with

Rating

SMC filter and method of manufacture thereof does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with SMC filter and method of manufacture thereof, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and SMC filter and method of manufacture thereof will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-820531