US 2018/0027705 A1 · METHODS, DEVICES, AND SYSTEMS FOR FILTERING ELECTROMAGNETIC INTERFERENCE

Abstract

Provided herein are methods, devices, and systems that relate to electromagnetic interference (EMI) filters that, in certain embodiments, comprise: (a) a housing comprising a substantially enclosed first compartment and a substantially enclosed second compartment; (b) a first circuit card located in the first compartment of the housing that converts a signal transmitted on a conductive based medium to a signal transmitted on a non-conductive based medium; (c) a second circuit card located in the second compartment of the housing that converts a signal transmitted on a non-conductive based medium to a signal transmitted on a conductive based medium; (d) at least one non-conductive based medium that transmits a signal from the first circuit card to the second circuit card; and (e) at least one waveguide through which the non-conductive based medium passes from the first compartment to the second compartment.

Claims21

Dependent claims

An electromagnetic interference (EMI) filter comprising:

(a) a housing comprising a substantially enclosed first compartment and a substantially enclosed second compartment;
(b) a first circuit card located in the first compartment of the housing that converts a signal transmitted on a conductive based medium to a signal transmitted on a non-conductive based medium;
(c) a second circuit card located in the second compartment of the housing that converts a signal transmitted on a non-conductive based medium to an Ethernet signal that is compliant with the IEEE 802.3 family of standards;
(d) at least one non-conductive based medium that transmits a signal from the first circuit card to the second circuit card;
and
(e) at least one waveguide through which the non-conductive based medium passes from the first compartment to the second compartment;
the filter providing a radiated electromagnetic emission amplitude (dBμV/m) versus frequency (Hz) graph having a largest peak within a frequency range of about 30 MHz to about 1 GHz that is equal to or less than about 44 dBμV/m when measured at a distance of about 3 meters from the filter.

4 more elements

An electromagnetic interference (EMI) filter comprising:

(a) a housing comprising a substantially enclosed first compartment and a substantially enclosed second compartment;
(b) a first circuit card located in the first compartment of the housing that converts a signal transmitted on a conductive based medium to a signal transmitted on a non-conductive based medium;
(c) a second circuit card located in the second compartment of the housing that converts a signal transmitted on a non-conductive based medium to a signal transmitted on a conductive based medium;
(d) at least one non-conductive based medium that transmits a signal from the first circuit card to the second circuit card;
and
(e) at least one waveguide through which the non-conductive based medium passes from the first compartment to the second compartment;
that is characterized by one or more of the following:
(i) the filter being designed to meet or exceed at least a portion of a military specification or standard;
(ii) the housing being designed to meet or exceed at least a portion of a military specification or standard;
(iii) at least one of the conductive based media being embodied in a connector that is designed to meet or exceed at least a portion of a military specification or standard;
(iv) at least one of the compartments being designed to meet or exceed at least a portion of a military specification or standard;
or (v) at least one of the circuit cards being designed to meet or exceed at least a portion of a military specification or standard.

9 more elements

Dependencies are inferred from the claim text.

Methods, devices, and systems for filtering electromagnetic interference

Life of this patent

Methods, devices, and systems for filtering electromagnetic interference

Life of this patent

Abstract

Claims21