Abstract: A solid state power combining apparatus for use in a microwave transmission system. The apparatus includes a distributed amplifier having an input transmission line, an output transmission line, and a plurality of amplifiers connected between the input and output transmission lines at quarter wavelength intervals. The phase relationship between the traveling waves placed on the output transmission line from the amplifiers is such that the waves placed on the output transmission line by the amplifiers in the direction toward an output terminal add and the waves placed on the output transmission line by adjacent amplifiers in the direction away from the output terminal cancel each other.Also, a solid state power combining apparatus wherein a plurality of oscillators are connected between input and output transmission lines at quarter wavelength intervals.

Abstract: A boresighting antenna for receiving signals within a given frequency band is covered by a radome having a wall including dielectric material. Boresight error compensation is provided by one or more pairs of perforated metal plates. Each plate has a dielectric material thereon. The plates of each pair are positioned symmetrically in relation to the longitudinal axis of the radome forward of the antenna in the radome in the direction from which the signals are received, and are tilted forward toward the radome axis from the interior wall of the radome at such an angle as to provide a phase lag in frequency components of the received signal at the high end of the given frequency band and a phase lead in frequency components of the received signal at the low end of the given frequency band.

Abstract: A resuable portable wind indicator comprises a central body member having four elongated arms extending radially outward therefrom at equal angles of 120 degrees from adjacent arms and connected to the central body member by coil springs, with each arm including a ribbon or the like at the outer end thereof. The outwardly extending arms can be folded up in one direction for packaging in a small container and, when released from an aircraft or the like, will spring outward such that when the indicator lands one arm will be extended in the upward direction such that the ribbon or flag on the end thereof will be blown by the wind in the direction of the wind. The radial arms are mounted by means of coil springs through a central body which may either consist of a spherical member with radial bores for threadably receiving the springs, or a radially extending plurality of studs for threadably receiving the coil springs.