Sarnoff Corporation

Lamina Ceramics, Inc.

Other

Sharp Kabushiki Kaisha Corporation

Winegard Company

Aly Eid Fathy

Bernard Dov Geller

Stewart Mark Perlow

Arye Rosen

Barry Jay Thaler

Michael James Liberatore

Sridhar Kanamaluru

Gordon C Taylor

Attiganal Narayanswamy Sreeram

George Herbert Needham Riddle

Pradyumna Kumar Swain

Ellen Schwartz Tormey

Attiganal Narayanaswamy Sreeram

Roger Casanova Alig

Charles E Rodeffer

Louis Sebastian Napoli

Ashok Naryan Prabhu

Ayre Rosen

Israel Haim Kalish

Francis J McGinty

Henry Charles Johnson

Edgar J Denlinger

Valerie Ann Pendrick

Moniem Esherbiny

David McGee

Embedded, coupled, shaped waveguide resonators having conductive walls sandwiched between two fired green tape stacks, said conductive walls having apertures therein whose size and location determine the degree of coupling. These waveguides are made by forming openings in a first green tape stack, defining walls and apertures therein, mounting a second green tape stack having a conductive layer thereon thereover and firing the assembly. E-plane probes are inserted in openings in the second green tape stack and connected to microstrip transmission lines on an external surface pf this green tape stack.

High performance embedded RF filters

An electron gun as for a cathode ray tube includes a plurality of electrodes biased at different potentials to electrostatically shape and focus the one or more electron beams produced thereby. A dynamic focus grid is driven by a substantial ac voltage signal at the horizontal line rate, which signal is undesirably coupled through parasitic capacitance to an intermediate grid located between the dynamic focus grid and the gun anode. A resistive biasing network includes a high value resistance to divide the anode potential to develop bias potential for the intermediate grid and a capacitance to ac couple the intermediate grid to ground potential. The resistance is formed in a single layer ceramic circuit and the capacitance is formed on the single layer ceramic circuit or on the tube neck. The ceramic circuit may be located in the tube neck on or with the electron gun.

Electron gun with resistor and capacitor

A surface PIN (SPIN) device and a method of fabricating such a SPIN device. The SPIN device, when activated, confines carrier injection to a small volume near the surface of the device such that the device is sufficiently conductive to simulate a planar conductor. The SPIN device comprises a P&plus; region and an N&plus; region formed in an intrinsic (I) layer. The P&plus; and N&plus; regions are separated by a lateral length of intrinsic material of length L. The length L is approximately the carrier diffusion length. When DC bias is applied across the N&plus; and P&plus; regions carriers are injected into the intrinsic region at a density exceeding 10 carriers per cubic cm. The intrinsic region is sufficiently thin to confine the carriers near the surface of the intrinsic region. As such, in the &ldquo;on&rdquo; state, the SPIN device simulates a conductive material. In the &ldquo;off&rdquo; state, the SPIN device is no longer conductive. Consequently, a planar array of SPIN devices can be fabricated and selectively activated to form a dynamic, reconfigurable antenna.

Surface PIN device

A reconfigurable adaptive wideband antenna includes a reconfigurable conductive substrate for dynamic reconfigurablility of the frequency, polarization, bandwidth, number of beams and their spatial directions, and the shape of the radiation pattern. The antenna is configured as a reflect array antenna having a single broadband feed. Reflective elements are electronically painted on the reconfigurable conductive surface using plasma injection of carriers in high-resistivity semiconductors.

Reconfigurable adaptive wideband antenna

A reconfigurable antenna capable of dynamic reconfigurability of several antenna parameters. Specifically, the present invention is an antenna comprising a plurality of surface PIN devices arranged in a gridlike array. Each of the SPIN devices can be individually activated or deactivated. When a SPIN device is activated, the surface of the device is injected with carriers such that a plasma is produced within the intrinsic region of the device. The plasma can be sufficiently conductive to produce conductor or metal like characteristics at the surface of the device. Various ones of the SPIN devices can be activated to electronically paint a conductive pattern upon the substrate supporting the PIN devices. Through selective activation of the SPIN devices various surface antenna patterns can be produced upon the substrate including dipoles, cross dipoles, loop antennas, Yagi-Uda type antennas, log periodic antennas, and the like. Additionally, the SPIN device grid may be selectively activated to produce holographic antennas. In a holographic antenna the SPIN devices are activated to produce a simulated metallization pattern that is excited by a surface RF wave transmitted onto the substrate from a surface mounted dipole antenna. The surface wave excites a particular antenna pattern depending upon the shape of the activated SPIN devices. Changing the pattern of the holographic antenna elements causes a beam steering and/or frequency adjustments of the antenna.

Reconfigurable antenna

A planar polarizer feed network comprising a six port branch coupler having two input ports and four output ports. The output ports are designed to have the same amplitude while their phases are sequentially offset by 90 degrees when fed from a first input port or by minus 90 degrees when fed from a second input port. In one embodiment, each output port is coupled to an aperture coupled antenna array comprising four slots and four patch antenna elements. In this arrangement, an RF signal may be coupled to each of the two input ports to couple properly phased signals to each of the antenna elements to simultaneously form both right-hand and left-hand circularly polarized signal emitted from the planar array of antenna elements.

Planar polarizer feed network for a dual circular polarized antenna array

An array antenna includes a first ceramic layer and a second ceramic layer. A metal layer is disposed between the first and second ceramic layers. A plurality of radiating elements are mounted on the first ceramic layer, and a plurality of control circuits are mounted on the second ceramic layer. The control circuits are coupled to the radiating elements through a plurality of conductive vias which feed through the metal layer. The array antenna may also include a switch having a plurality of poles formed in the second ceramic layer and coupled to one of the radiating elements through one or more conductive vias. A plurality of phase delay elements may be coupled at a first end to a signal source and coupled at a second end to the respective plurality of poles of the switch to provide phase-delayed signals. A waveguide may also be formed within the ceramic layers. Conductive vias or coaxial transmission lines may be used to connect elements within the array antenna.

Switch structure for antennas formed on multilayer ceramic substrates

Antennas formed using multilayer ceramic substrates

An electronic integrated circuit which includes at least one of RF, microwave, digital and analog components connected in a desired circuit. The integrated circuit includes a substrate of a conductive material having on a surface thereof a body of a dielectric material. The dielectric body is formed of a plurality of layers of the dielectric material bonded together. A plurality of strips of a conductive material are on the surfaces of the layers of the body to form RF, analog and digital components. Discrete electronic devices are mounted on the body and connected in the circuit. Vias of a conductive material extend through the various layers of the body to electrically connect the various strips of conductive material on the layers of the body.

Integrated electronic circuit

A conical corrugated microwave feed horn. A conical flare section is formed at the aperture of the feed horn and a second smooth cylindrical section is formed at the throat of the feed horn. The conical flare section is formed with two regions. The first region is a corrugated conical region formed at the aperture and having a plurality of slots formed parallel to the central axis of the feed horn. Each slot in the plurality of slots has an inner surface closest to the central axis of the feed horn and an outer surface furthest from the central axis. Connecting the corrugated conical region to the cylindrical throat is a smooth conical region. The first slot adjacent the smooth conical region has first and second formed lips on the terminating end thereof. The lips are formed directed inwardly toward each other. The last slot of the plurality of slots at the aperture of the feed horn has the terminating end of the inner surface extending in length beyond the length of the outer surface.

Conical corrugated microwave feed horn

Growing community of inventors

Langhorne, PA, United States of America

Aly Eid Fathy