Parallel RC circuit equalizers
AssigneeAVX Corporation
InventorGheorghe Korony
Life of this patent
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Abstract
Disclosed are apparatus and methodology for increasing the resonance frequency and useful frequency range of surface mount RC equalizer devices. The presently disclosed subject matter provides improved operational characteristics of generally known such RC equalizer devices by implementing a reverse geometry that relocates the internal termination points, as well as external termination points for such devices, along lateral portions of the assembled device. Such reverse geometry achieves improvements by providing a reduction of the equivalent series inductance (ESL) to provide the increased resonance frequency and useful frequency range.
Claims31
A parallel RC circuit equalizer having relatively increased resonance frequency and useful frequency range, comprising:
- a monolithic substrate having at least a top surface and at least one pair of opposing lateral edges along said top surface of said substrate;
- a capacitor having a first electrode layer and a second electrode layer, both electrode layers mounted on said top surface of said substrate, and separated by a dielectric;
- a first terminal layer connected to said first electrode layer and positioned on said top surface of said substrate and along at least a portion of one of said lateral edges thereof;
- a second terminal layer connected to said second electrode layer and positioned on said top surface of said substrate and along at least a portion of said lateral edge thereof opposite to said first terminal layer;
- a resistor supported on said substrate top surface and connected in parallel with said capacitor;
- and
- at least one connection terminal associated with said resistor;
- wherein such arrangement of said terminal layers and said at least one connection terminal results in reduced equivalent series inductance of said capacitor, which relatively increases the resonance frequency and useful frequency range of the resistor and capacitor combined circuit.
A parallel RC circuit equalizer having relatively increased resonance frequency and useful frequency range, comprising:
- a monolithic substrate having at least a top surface and at least one pair of opposing lateral edges along said top surface of said substrate, said substrate being elongated along said opposing lateral edges thereof and having respective opposite end edges;
- a capacitor mounted on said top surface of said substrate;
- a resistor supported on said substrate top surface and connected in parallel with said capacitor;
- a pair of respective waveguide elements connected with said capacitor and said resistor, and supported on said top surface of said substrate so as to extend respectively to said respective opposite end edges of said substrate;
- and
- a pair of ground electrodes positioned on said top surface of said substrate and respectively extending along at least a portion of said opposing lateral edges of said top surface of said substrate;
- wherein such arrangement of said elements and said electrodes results in reduced equivalent series inductance of said capacitor, which relatively increases the resonance frequency and useful frequency range of the resistor and capacitor combined circuit.
Methodology for relatively increasing the resonance frequency and useful frequency range of a parallel RC circuit equalizer, comprising:
- providing a monolithic substrate having at least a top surface and at least one pair of opposing lateral edges along said top surface of said substrate, said substrate being elongated along said opposing lateral edges thereof and having respective opposite end edges;
- supporting a capacitor on said top surface of said substrate;
- supporting a resistor on said substrate top surface and connected in parallel with said capacitor so as to form an RC circuit therewith;
- and
- providing termination material positioned on said top surface of said substrate and along at least a portion of each of said opposing lateral edges thereof, resulting in reduced equivalent series inductance of said capacitor, which relatively increases the resonance frequency and useful frequency range of the resistor and capacitor combined circuit.
Dependencies are inferred from the claim text.