1
Mark V Faulkner, Edward B Stoneham, Clifford A Mohwinkel, Mark J Vaughan: Coplanar microwave circuit having suppression of undesired modes. Endgate Corporation, George M Steres, Anderson & Adamson, February 8, 2000: US06023209 (77 worldwide citation)

Two or three conductor coplanar transmission lines and lossy coplanar resistive films are formed on a surface of a substrate. The resistive film dimensions and resistivity are selected to suppress various spurious electromagnetic modes within and around the substrate. The resistive films may be posi ...


2
Masahiro Omori, Edward B Stoneham: Protective coating useful as a passivation layer for semiconductor devices. Microwave Technology, Skjerven Morrill MacPherson Franklin & Friel, February 11, 1992: US05087959 (43 worldwide citation)

A protective coating useful as a passivation layer for semiconductor devices incorporates a thin film of an amorphous diamond-like carbon. In one implementation, a thin film of amorphous silicon is deposited over the carbon material. The semiconductive passivation coating prevents electrical shorts, ...


3
Edward B Stoneham, Masahiro Omori, Arthur D Herbig: Subchannel doping to reduce short-gate effects in field effect transistors. Microwave Technology, Kenneth E Leeds, Alan H MacPherson, Paul J Winters, November 29, 1988: US04788156 (43 worldwide citation)

One embodiment of a process in accordance with our invention includes the step of forming a P type region on a semiconductor substrate. After the P type region is formed, an N type layer is epitaxially grown on the P type region. A Schottky gate is then formed on the N type epitaxial layer. A first ...


4
Masahiro Omori, Edward B Stoneham: Protective coating useful as passivation layer for semiconductor devices. Microwave Technology, Skjerven Morrill MacPherson Franklin & Friel, November 20, 1990: US04972250 (41 worldwide citation)

A protective coating useful as a passivation layer for semiconductor devices incorporates a thin film of an amorphous diamond-like carbon. In one implementation, a thin film of amorphous silicon is deposited over the carbon material. The semiconductive passivation coating eliminates electrical short ...


5
Clifford A Mohwinkel, Edwin F Johnson, Edward B Stoneham: Coplanar waveguide-mounted flip chip. Endgate Corporation, Edward B Anderson, June 18, 1996: US05528203 (26 worldwide citation)

A radio-frequency power amplifier includes a multiple-FET chip that is flip mounted on a connection region of a substrate. An input impedance-matching network is also mounted on the substrate. The network includes a coplanar waveguide having an elongate waveguide signal conductor for each gate termi ...


6
Allen F Podell, Edward B Stoneham: Input protection circuit. Pacific Monolithics, Edward B Anderson, April 5, 1994: US05301081 (19 worldwide citation)

A depletion-mode MESFET is connected between an RF input terminal and ground. The gate is connected to a negative reference voltage via a bias resistor and to ground via a capacitor. A detector couples the input terminal to the gate and includes first and second series diodes and a second resistor c ...


7
Clifford A Mohwinkel, Edward B Stoneham: Coplanar oscillator circuit structures. Endgate Corporation, George M Anderson & Adamson Steres, October 13, 1998: US05821827 (16 worldwide citation)

An oscillator circuit having a flip chip metalization pattern and base substrate metalization pattern is defined such that a common-drain oscillator is configured with the common drain interposed between the source and gate terminals, providing an effective RF common reference with reduced parasitic ...


8
Richard Tamler, Edward B Stoneham: Dental pulp vitality tester. Townsend and Townsend, December 29, 1981: US04308012 (11 worldwide citation)

A dental pulp vitality tester for selectively applying heat, cold, or electrical stimulation to a patient's tooth in a controlled reproducible manner. Broadly, the device includes a handle having a thermally and electrically conductive probe tip, a heat sink within the handle, and a thermoelectric e ...


9
Clifford A Mohwinkel, Edwin F Johnson, Edward B Stoneham: Coplanar waveguide-mounted flip chip having coupled ground conductors. Endgate Corporation, Edward B Anderson, September 16, 1997: US05668512 (10 worldwide citation)

A radio-frequency power amplifier includes a multiple-FET chip that is flip mounted on a connection region of a substrate. An input impedance-matching network is also mounted on the substrate. The network includes a coplanar waveguide having an elongate waveguide signal conductor for each gate termi ...


10
Clifford A Mohwinkel, Edwin F Johnson, Edward B Stoneham: Flip-mounted impedance. Endgate Corporation, Anderson & Adamson, August 24, 1999: US05942957 (8 worldwide citation)

A radio-frequency power amplifier includes a multiple-FET chip that is flip-mounted on a connection region of a substrate. An input impedance-matching network is also mounted on the substrate. The network includes a coplanar waveguide having an elongate waveguide signal conductor for each gate termi ...