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| Number | Title | Issue Date |
| 5944900 | Protective gas shield for chemical vapor deposition apparatus A shield assembly for protecting an exposed surface of an injector. The shield assembly includes a shield body having a front and back walls and at least one plenum therebetween, and at least one conduit coupled for delivering a gaseous substance to the p... | 08/31/1999 |
| 5854974 | Compensated ring mixers A compensated mixer including a radio frequency (RF) balun through which RF signals are transferred, and a local oscillator (LO) balun for receiving an LO signal. In an exemplary implementation the mixer further includes a diode ring quad circuit for mixi... | 12/29/1998 |
| 5809422 | Distributed microcellular communications system A distributed microcellular communication system comprised of a plurality of subcells arranged within one or more conventional cells. The distributed microcellular communications system includes one or more remote site stations, each of which transmits an... | 09/15/1998 |
| 5768268 | Wideband base station architecture for digital cellular communications system An open-architecture digital cellular base station readily adapted to support communication over a variety of air interface standards is disclosed herein. The base station includes a wideband digital transceiver system having transmit and receive sections... | 06/16/1998 |
| 5708556 | Electrostatic chuck assembly An electrostatic support system for retaining a wafer. The support system generally includes a support body having a support surface for retaining said wafer, a voltage source coupled to the support body for electrostatically coupling the wafer to the sup... | 01/13/1998 |
| 5678226 | Unbalanced FET mixer A unbalanced mixer capable of operation in the absence of DC bias is disclosed herein. The mixer includes an input or local oscillator (LO) port for receiving an input signal. A first transistor has a control terminal coupled to the mixer input port, and ... | 10/14/1997 |
| 5668063 | Method of planarizing a layer of material A method of planarizing a layer of material having a pre-determined thickness above a circuit feature on a semiconductor device is provided. A first layer of material is formed atop the surface of the semiconductor substrate and circuit feature to a pre-d... | 09/16/1997 |
| 5513390 | Biased FET mixer A mixer including a "reflection" transmission line transformer having at least first and second ports. The ports are connected such that nearly complete coupling of energy between the ports relies on substantially complete reflection of energy at a refere... | 04/30/1996 |
| 5454928 | Process for forming solid conductive vias in substrates A method of forming solid metal vias extending between the top and bottom surfaces of a substrate with the ends of the vias being substantially coplanar with the top and bottom surfaces. The method includes the steps of forming holes through the substrate... | 10/03/1995 |
| 5414313 | Dual-mode logarithmic amplifier having cascaded stages A dual-mode successive detection amplifier for providing a first output signal corresponding to a logarithmic function of a RF input signal, and for providing a second limited RF output signal is disclosed herein. A RF input signal is applied to the first... | 05/09/1995 |
| 5374328 | Method of fabricating group III-V compound A solution of hydrogen peroxide [H2 O2 ], citric acid [HOC(CH2 COOH)2 COOH.H2 O], and a salt of citric acid such as potassium citrate [HOC(CH2 COOK)2 COOK.H2 O], and h... | 12/20/1994 |
| 5361409 | FET mixer having transmission line transformer A mixer comprising four FET transistors in a MMIC, a reflection transformer having tri-filar windings, an IF balun, an RF balun, a local oscillator balun, a pair of load resistors, a pair of series resistors, and a pair of series capacitors. The mixer is ... | 11/01/1994 |
| 5304398 | Chemical vapor deposition of silicon dioxide using hexamethyldisilazane A method for depositing silicon dioxide on the surface of a substrate or the like using a nitrogen-containing precursor is disclosed herein. In a preferred implementation the deposition is performed using an atmospheric pressure reactor, into which is dir... | 04/19/1994 |
| 5300900 | High-frequency limiter and switch-limiter circuit having improved recovery time High-frequency limiter and switch-limiter circuits having reduced insertion loss and improved recovery time are disclosed herein. The high-frequency switch-limiter includes at least one input port and a high-frequency signal path between the input port an... | 04/05/1994 |
| 5113789 | Self cleaning flow control orifice A self cleaning flow control orifice mounted in an exhaust line. A toroid having a rounded inner surface is mounted in the exhaust line and forms an orifice. A cleaning device is mounted in a manner to provide close contact between the cleaning device and... | 05/19/1992 |
| 5088773 | Electrically insulating pipe coupling apparatus An electrically insulating pipe coupling assembly for electrically isolating pipe sections to which an electric current is applied. The apparatus includes first and second extension members formed having an integral flange with a protruding annular sealin... | 02/18/1992 |
| 5029471 | Liquid level sensor assembly A liquid level sensor assembly for a liquid-chemical bubbler includes a removable cylindrical LED housing, which is removably retained within a cylindrical axial bore of a sealing nut. The LED housing is removable from within the cylindrical axial bore wi... | 07/09/1991 |
| 4935377 | Method of fabricating microwave FET having gate with submicron length Disclosed is a method of forming a uniform length gate electrode and contact for a microwave field-effect transistor where the gate electrode has a length of less than one micron. A photoresist plug is formed on the surface of a first photoresist layer, t... | 06/19/1990 |
| 4547755 | Microwave circuit structure and method of mounting A microwave circuit and housing in which the housing cavity is reduced in size by providing threaded slots in side walls of the housing which receive tabs extending from the microwave circuit carriers. Pillars are inserted in the slots for maintaining the... | 10/15/1985 |
