Strip transmission line structures

Claim 2

A triplate strip transmission line structure comprising, in combination; a. dielectric core member of epoxy glass material characterized by a relatively high dielectric in the order of about 3.5 to 4.4 and having a predetermined thickness depending upon the dielectric constant of the material utilized, b. at least one flat conductive X plane signal element of predetermined cross-sectional area depending upon the signals to be transmitted over the signal element and affixed to one side of the dielectric core member, c. at least one flat conductive Y plane signal element of predetermined cross-sectional area depending upon the signal to be transmitted over the signal elements and arranged in a parallel array affixed to the other side of the dielectric core member, d. a second and third dielectric member of polyethylene type material characterized by a relatively low dielectric constant in the order of about 2.1 to 2.35 and positioned contiguously to each side of the dielectric core member to which the signal elements are affixed, e. a layer of thin conductive foil attached to the outermost surface of each of the second and third dielectric members and adapted to function as the ground planes of the strip transmission line structure, and f. whereby each of the signal line conductor elements in combination with a ground conductor plane is adapted to functionally operate as a transmission line possessing substantially uniform impedance characteristics with the complete transmission line structure enabling concurrent orthogonal signal transmissions and crosstalk suppression between different planar signal elements is a function of the thickness of said dielectric core member.

Claim 3

A triplate strip transmission line strucTure comprising, in combination: a. a dielectric core member of a polyimide material characterized by a relatively high dielectric constant in the order of about 3.5 to 4.4 and having a predetermined thickness depending upon the dielectric constant of the material utilized, b. a plurality of flat conductive X plane signal elements of predetermined cross-sectional area depending upon the signals to be transmitted over the signal elements and arranged in a parallel array affixed to one side of the dielectric core member, c. a plurality of flat conductive Y plane signal elements of predetermined cross-sectional area depending upon the signals to be transmitted over the signal elements and arranged in a parallel array affixed to the other side of the dielectric core member, d. a second and third dielectric material of FEP Teflon type material characterized by a relatively low dielectric constant in the order of about 2.1 to 2.35 and positioned contiguously to each side of the dielectric core member to which the signal elements are affixed, e. a layer of thin conductive foil attached to the outermost surface of each of the second and third dielectric members and adapted to function as the ground planes of the strip transmission line structure, and f. whereby each of the signal line conductor elements in combination with a ground conductor plane is adapted to functionally operate as a transmission line possessing substantially uniform impedance characteristics with the complete transmission line structure enabling concurrent orthogonal signal transmissions and crosstalk suppression between different planar signal elements is a function of the thickness of said dielectric core member.