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| Number | Title | Issue Date |
| 6459346 | Side-coupled microwave filter with circumferentially-spaced irises A microwave filter has a set of irises to couple cavities within the filter. A trifurcated iris comprises a central iris and a pair of peripheral irises. The peripheral irises are configured and oriented to couple a primary mode having a magnetic field in... | 10/01/2002 |
| 6300775 | Scattering parameter calibration system and method A system and method of calibrating an S parameter measurement instrument (such as a vector network analyzer) in which the number of calibrations required to fully characterize the error model of an n-port system is n/2 calibrations for an even number of p... | 10/09/2001 |
| 6266329 | Regional programming in a direct broadcast satellite A multi-beam DBS satellite system capable of providing spectrally efficient regional programming is disclosed. The inventive system includes at least one DBS satellite having a repeater connected between multiple uplink antennas and multiple downlink ante... | 07/24/2001 |
| 6255919 | Filter utilizing a coupling bar A filter apparatus includes an enclosure defining a plurality of cavities. A pair of resonators are located in a corresponding pair of the cavities. The filter apparatus further includes an elongated coupling structure operatively interposed between the p... | 07/03/2001 |
| 6249513 | Managing inter-satellite connections in a constellation with overlapping orbital planes A system and method for managing inter-satellite connectivity in the overlapped regions of a satellite constellation having a plurality of overlapping orbital planes. The overlapped regions are created by the intersection of orbital planes having satellit... | 06/19/2001 |
| 6232853 | Waveguide filter having asymmetrically corrugated resonators A waveguide filter is provided having a plurality of asymmetrical corrugated resonators. The filter may also include an input section and an output section including a low-pass filter unit and a transformer unit. The low-pass filter unit includes a plural... | 05/15/2001 |
| 6179976 | Surface treatment and method for applying surface treatment to suppress secondary electron emission A surface treatment and method for applying the surface treatment to electrical components are provided that include a coating of yttrium-iron-garnet (YIG), which is applied to the inner surface of the component by sputtering.... | 01/30/2001 |
| 6170154 | Printed lumped element stripline circuit structure and method A novel circuit packaging structure including a combination of printed lumped elements within a multi-layer stripline architecture is provided and methods of making the same. The lumped elements are provided by printing the individual passive elements, in... | 01/09/2001 |
| 6169466 | Corrugated waveguide filter having coupled resonator cavities A corrugated waveguide filter has a plurality of coupled resonator cavities arranged in a horizontal or vertical manner. The filter may include an input transformer section and an output transformer section for matching the filter to external waveguide li... | 01/02/2001 |
| 6047162 | Regional programming in a direct broadcast satellite A multi-beam DBS satellite system capable of providing spectrally efficient regional programming includes at least one DBS satellite having a repeater connected between multiple uplink antennas and multiple downlink antennas. The repeater has a switching ... | 04/04/2000 |
| 5956620 | Analog processor for digital satellites An analog processor for use with digital satellites. The analog processor is connected between the receiving circuitry of the satellite and a pool of digital on-board processors, and segments the bandwidth of uplink RF beams into sub-bands that can be pro... | 09/21/1999 |
| 5822312 | Repeaters for multibeam satellites A repeater for a multibeam communications satellite combines the features of coaxial channel interbeam switching and subchannelization of some of the channels. In one embodiment described, the input radio-frequency signals from the input beams are fed thr... | 10/13/1998 |
