EP0297709A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Compact filter
Assignee: Individual
•
Filing: 1988-05-18
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Granted: —
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Expires: 2008-05-18
Abstract
Abstract A filter comprises components arranged in a plurality of compartments (64,66) which are magnetically shielded (68,70) from each other. Each compartment includes components for filtering two frequencies wherein these frequencies are separated by an amount such that inductive coupling is substantially prevented. The compartments are combined to increase the attenuation, and any number of compartments may be utilized to filter the desired number of frequencies.
Inventors
- 👤 Raymond W. Palinkas
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 03:53
CPC Classifications
H; H03; H03H; H03H7/00; H03H7/01; H03H7/17; H03H7/1741; H03H7/1783; H03H7/0115; H03H7/1791
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
93 words
A filter comprising first and second compartments, means for magnetically isolating said first compartment from said second compartment, first filter means for filtering a first frequency and having components in each of said first and second compartments, and second filter means for filtering a second frequency and having components in said first and second compartments, wherein said first frequency is spaced from said second frequency by an amount such that magnetic coupling between said components of said first and second filter means in each of said first and second compartments is substantially prevented.
Claim 2
Dependent Claim
93 words
A filter comprising first and second compartments, means for magnetically isolating said first compartment from said second compartment, first filter means for filtering a first frequency and having components in each of said first and second compartments, and second filter means for filtering a second frequency and having components in said first and second compartments, wherein said first frequency is spaced from said second frequency by an amount such that magnetic coupling between said components of said first and second filter means in each of said first and second compartments is substantially prevented.
Claim 3
Dependent Claim
19 words
A filter according to Claim 1 wherein said components of said first and second filter means comprise inductive elements.
Claim 4
Dependent Claim
19 words
A filter according to Claim 2 wherein each of said first and second filter means is a notch filter.
Claim 5
Dependent Claim
18 words
A filter according to Claim 3 wherein each of said first and second compartments comprises a metal casing.
Claim 6
Dependent Claim
19 words
A filter according to Claim 3 wherein each of said first and second frequencies is a cable television frequency.
Claim 7
Dependent Claim
19 words
A filter according to Claim 3 wherein said component of each of said filters comprise shunt and series circuits.
Claim 8
Dependent Claim
26 words
A filter according to Claim 6 wherein said series and shunt circuits in each of said compartments are arranged to inductively couple to provide phase cancellation.
Claim 9
Dependent Claim
19 words
A filter according to claim 1 wherein said first and second compartments contain elements for filtering only two frequencies.
Claim 10
Dependent Claim
23 words
A filter according to claim 1 comprising a plurality of said compartments wherein each compartment contains elements for filtering a plurality of frequencies.
Claim 11
Dependent Claim
51 words
A filter compartment comprising a magnetically shielded casing and first and second inductive filter circuits inside said casing, wherein said first and second inductive filter circuits are tuned to respective first and second frequencies which are spaced such that coupling between said first and second inductive filter circuits is substantially prevented.
Claim 12
Dependent Claim
51 words
A filter compartment comprising a magnetically shielded casing and first and second inductive filter circuits inside said casing, wherein said first and second inductive filter circuits are tuned to respective first and second frequencies which are spaced such that coupling between said first and second inductive filter circuits is substantially prevented.
References Cited (Backward Citations)
No citation records indexed.
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