Parallel RC circuit equalizers
AssigneeAVX Corporation
InventorGheorghe Korony
Life of this patent
Estimating the term…
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.
Claims28
A parallel RC circuit equalizer comprising:
- a monolithic substrate having a first end, a second end, and a length between the first end and second end in a first direction, the monolithic substrate having a width in a second direction that is perpendicular to the first direction, the width of the monolithic substrate being greater than the length of the monolithic substrate;
- a capacitor mounted on the monolithic substrate, the capacitor having a first electrode layer, a second electrode layer, and a dielectric separating the first electrode layer and the second electrode layer;
- a resistor mounted on the monolithic substrate, the resistor connected in parallel with the capacitor;
- a first terminal disposed at the first end of monolithic substrate and electrically connected to the first electrode layer of the capacitor;
- and
- a second terminal disposed at the second end of monolithic substrate electrically connected to the second electrode layer of the capacitor.
A parallel RC circuit equalizer comprising:
- a monolithic substrate that is elongated in a longitudinal direction between a pair of longitudinal ends;
- an RC structure attached to the substrate, the RC structure comprising a capacitor and a resistor connected in parallel with the capacitor;
- a pair of respective waveguide elements attached to the substrate and electrically connected to the RC structure, each of the pair of respective waveguide elements extending from the RC structure to a respective one of the pair of longitudinal ends of the substrate:
- at least one ground electrode attached to the substrate and extending in the longitudinal direction.
A parallel RC circuit equalizer, comprising:
- a monolithic substrate that is elongated in a longitudinal direction between a pair of longitudinal ends;
- a capacitor supported on the substrate, the capacitor having a first electrode layer, a second electrode layer, and a dielectric layer between the first and second electrode layers;
- a resistor supported on the substrate and electrically connected in parallel with the capacitor;
- a first terminal disposed along one of the pair of longitudinal ends;
- a second terminal disposed along the other of the pair of longitudinal ends;
- a first waveguide element attached to the substrate and electrically connected to the first electrode layer of the capacitor, the first waveguide element extending generally in the longitudinal direction from the capacitor to one of the pair of longitudinal ends of the substrate and electrically connected with the first terminal;
- a second waveguide element attached to the substrate and electrically connected to each of the resistor and the second electrode layer of the capacitor, the second waveguide element extending generally in the longitudinal direction from the resistor to the other of the pair of longitudinal ends of the substrate and electrically connected with the second terminal;
- a ground terminal attached to the substrate;
- and
- at least one ground electrode attached to the substrate and extending in the longitudinal direction, the at least one ground electrode electrically connected to the ground terminal.
Dependencies are inferred from the claim text.