Abstract:
A planar-type spiral antenna assembly capable of handling higher input powers than prior art planar antennas and enabling greater ranges of a radiated beam of electromagnetic wave energy. This is accomplished by recessing the spiral convolutions of conductive material forming the antenna into corresponding spiral slots formed in a dielectric disc having a high-dielectric strength, the disc being formed from a material such as quartz or alumina. The spiral convolutions of conductive material, recessed within the aforesaid slots, are preferably covered with a dielectric material such as silicon monoxide or silicon dioxide to further increase the dielectric constant in the space between adjacent conductors.
Abstract:
Described is a power-dissipating termination for wave energy transmission lines, characterized in having a low voltage standing wave ratio essentially independent of input power and operable in ambient temperatures up to 300* C. over a frequency range from zero to ultrahigh frequencies and above.
Abstract:
A flat package is provided for holding microwave integrated circuits. A completely inorganic assembly of ceramic and metal materials is fabricated from thin sheet materials and hermetically sealed. Using the ''''green tape'''' process, a planar base, spacer and frame are provided in a rectangular package provided with a cutout portion adapted for containing RF electrical circuit components mounted on a standard dielectric circuit board. The dielectric package contains metallized edge portions on an RF terminal for electrically connecting the package to a standard microstrip having a ground plane. DC and bias leads are provided on a separate edge portion of the flat pack.
Abstract:
DESCRIBED IS MICROWAVE MINIATURIZED SIGNAL PROCESSING CIRCUITRY FOR RADAR AND THE LIKE APPLICATIONS EMPLOYING FERRITE FILMS CAPABLE OF EFFECTING A PHASE SHIFT IN WAVE ENERGY PASSING THROUGH THE CIRCUITRY, AND WHEREIN THE INSERTION LOSS OF THE DEVICE IS MINIMIZED. THIS IS ACCOMPLISHED BY PROVIDING A STRUCTURE WHEREIN THE WAVE ENERGY NEED NOT PASS THROUGH A CERAMIC OR THE LIKE SUBSTRATE, BUT RATHER IS CONFINED ESSENTIALLY WITHIN THE FERRITE MATERIAL ITSELF.