Abstract A novel ground plane structure for a delay line in which a thin insulating carrier such as mylar has the ground plane printed thereon. The carrier is then placed on an insulating tube with the ground plane electrical structure on the inside against the face of the tube and the coil wound on the insulating carrier, the insulating carrier thereby providing controlled insulating spacing between the coil and the ground plane. A connection is made to the ground plane by means of an adhesive copper tape which engages a substantial portion at the edge of the surface of the printed ground plane electrical structure and extends beyond the insulated carrier; this copper extension serves as a connector and as a heat sink, avoiding thermal damage to the insulating carrier during soldering, where soldering occurs. The use of a single diagonal discontinuance or gap section in the ground plane printed surface which becomes a spiral gap section in the completed coil provides improved band width and avoidance of ripple in the time delayed pulse to an extent equal to or better than that previously obtained by the utilization of separate but connected ground plane electrical sections.
Inventors
👤 H Bernstein
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-10-31 20:17
CPC Classifications
H; H03; H03H; H03H7/00; H03H7/30; H03H7/32
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
75 words
A ground plane structure for a delay line, said ground plane structure comprising a thin flexible insulating support capable of being wrapped cylindrically, a ground plane web of conductive metal carried by a surface of said support, and a diagonal slot in said web of conductive metal, an end of said slot terminating within the area of said conductive web, said slot assuming a spiral configuration when said thin flexible insulating support is wrapped cylindrically.
Claim 2
Dependent Claim
75 words
A ground plane structure for a delay line, said ground plane structure comprising a thin flexible insulating support capable of being wrapped cylindrically, a ground plane web of conductive metal carried by a surface of said support, and a diagonal slot in said web of conductive metal, an end of said slot terminating within the area of said conductive web, said slot assuming a spiral configuration when said thin flexible insulating support is wrapped cylindrically.
Claim 3
Dependent Claim
40 words
The ground plane structure of claim 1 in which: a conductive band is secured to and in electrical contact with said ground plane web; said conductive band extending beyond an edge of said web and providing a terminal connector therefor.
Claim 4
Dependent Claim
74 words
A delay line having the ground plane structure of claim 2; said delay line having a principal insulating support; said ground plane structure being wrapped on said principal insulating support; said ground plane web of conductive material lying against said principal insUlating support; a coil wound over said ground plane structure; the thin flexible insulating ground plane support providing insulating spacing predetermined by the thickness thereof between the ground plane web and said coil.
Claim 5
Dependent Claim
48 words
The delay line of claim 3 wherein the portion of said conductive band extending beyond said ground plane has an adhesive surface on the side adjacent said principal insulating support forming a member which secures said ground plane surface in position and providing a means for electrical connection.