Abstract: A cooled spider for grazing-incidence collectors includes an outer ring, an inner ring and spokes that mechanically and fluidly connect the inner and outer rings. Cooling channels in the outer and inner rings and in the spokes define a general cooling-fluid flow path through the spider. The general cooling-fluid flow path has input and output points located substantially 180° apart so that the flow path diverges at the input point into two branch flow paths that flow in opposite directions through the spider, and then converge at the output point. Input and output cooling fluid manifolds are fluidly connected to the outer ring at the input and output points and serve to flow cooling fluid over the cooling-fluid flow path.

Abstract: A cooled spider for grazing-incidence collectors includes an outer ring, an inner ring and spokes that mechanically and fluidly connect the inner and outer rings. Cooling channels in the outer and inner rings and in the spokes define a general cooling-fluid flow path through the spider. The general cooling-fluid flow path has input and output points located substantially 180° apart so that the flow path diverges at the input point into two branch flow paths that flow in opposite directions through the spider, and then converge at the output point. Input and output cooling fluid manifolds are fluidly connected to the outer ring at the input and output points and serve to flow cooling fluid over the cooling-fluid flow path.

Abstract: A ceramic filter (100) with integrated harmonic response suppression has a ceramic monolithic block filter having a predetermined passband defined by tuned resonators located between an input and an output (116); and at least one of a harmonic trap filter, a lowpass filter and a lowpass microstrip filter, each having an inductive and a capacitive component. This is achievable with a design which incorporates an integrated harmonic response suppression filter directly in or on the dielectric ceramic monolithic block. This can result in a substantial savings in space, cost, and part count in an electronic telecommunications device.

Abstract: A frequency agile, dielectrically loaded bandpass filter is disclosed in which capacitive layers on the top surface of the filter are selectively switched to ground in order to affect a change in the center frequency of the passband response of the filiter. A PIN diode switching network, including a means for biasing the diode, is used to effectively place the capacitive layers in parallel with the quarter-wavelength transmission line resonators contained within the block of the filter.

Abstract: A bandwidth agile, dielectrically loaded resonator filter is disclosed in which conductive strips (320, 322), plated on the top surface (302) of the filter and disposed between resonators (310, 312, 314), are selectively switched to ground in order to affect a change in the bandwidth without appreciably changing the center frequency of the filter response. PIN diode switching networks (316, 318), including a means for biasing the diode, are used to effectively ground the strips between the nearly quarter-wavelength transmission line resonators contained within the block (300) of the filter, thereby capturing a portion of the capacitive coupling (402, 404) which occurs mostly beneath the surface of the filter between adjacent resonators.

Abstract: Chrome plated plastic scrap is chopped into small pieces and then, while subjected to sub-zero temperatures, is centrifugally impacted thereby producing a mixture of particles of chrome and plastic. Most of the chrome particles are removed by subjecting the mixture to a magnetic field. The remaining, mostly plastic particles are classified to obtain usable, predominantly plastic particles within a predetermined size range, those particles exceeding this range being, if desired, recycled for subjection to said centrifugal impacting step. The usable particles are thus reclaimed for reuse, after repelletizing, in extrusion or molding techniques.