Patents by Inventor Robert E. Knapp
Robert E. Knapp has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 12208031Abstract: Examples relate to fluid collection assemblies, systems, and methods for collecting fluid from a wearer of the fluid collection assembly. The fluid collection assemblies include a fluid collection device attachable to an adapter. The fluid collection device includes porous material disposed within a fluid impermeable barrier. The adapter includes an interfacing body having at least one orifice and at least one attachment feature for attaching the adapter to the fluid collection device such that the porous material is fluidly connected to the at least one orifice. A fluid collection system includes a fluid collection device operably coupled to a fluid storage container and vacuum source via one or more sections of conduit.Type: GrantFiled: October 14, 2021Date of Patent: January 28, 2025Assignee: PureWick CorporationInventors: Tracey E. Knapp, Robert Hine
-
Publication number: 20150221755Abstract: Various embodiments provide an electrostatic discharge (ESD) protection device. The ESD protection device may include a subcollector, collector, base, and emitter formed in layers on top of one another. The emitter may include a different semiconductor than a semiconductor included in the base to form a heterojunction. The ESD protection device may include a collector contact disposed on the subcollector and an emitter contact disposed on the emitter. The ESD protection device may be a two-terminal device, with no conductive base contact coupled with the base.Type: ApplicationFiled: February 4, 2014Publication date: August 6, 2015Applicant: TriQuint Semiconductor, Inc.Inventors: Timothy S. Henderson, Robert E. Knapp
-
Patent number: 9099518Abstract: Various embodiments provide an electrostatic discharge (ESD) protection device. The ESD protection device may include a subcollector, collector, base, and emitter formed in layers on top of one another. The emitter may include a different semiconductor than a semiconductor included in the base to form a heterojunction. The ESD protection device may include a collector contact disposed on the subcollector and an emitter contact disposed on the emitter. The ESD protection device may be a two-terminal device, with no conductive base contact coupled with the base.Type: GrantFiled: February 4, 2014Date of Patent: August 4, 2015Assignee: TriQuint Semiconductor, Inc.Inventors: Timothy S. Henderson, Robert E. Knapp
-
Patent number: 6930555Abstract: A sense transistor is placed in a current path between a reference voltage source and ground. The base terminal of the sense transistor is coupled to the base terminal of an amplifying transistor. Thus, current in the sense transistor corresponds to signal power output by the amplifying transistor. The sense current causes a sense voltage at the collector terminal of the sense transistor. This sense voltage is applied to one input of an error amplifier. The other error amplifier input receives a power control voltage. The error amplifier output is routed back to the base terminal of the amplifying transistor in a negative feedback loop, thereby keeping the power of the signal output by the amplifying transistor at a constant level. In some embodiments the error amplifier output is made independent of changes in the reference voltage. Multiple pairs of corresponding amplifying and sense transistors can be used.Type: GrantFiled: November 16, 2004Date of Patent: August 16, 2005Assignee: TriQuint Semiconductor, Inc.Inventors: Stephen P. Bachhuber, Thomas R. Apel, Robert E. Knapp
-
Patent number: 6853250Abstract: A sense transistor is placed in a current path between a reference voltage source and ground. The base terminal of the sense transistor is coupled to the base terminal of an amplifying transistor. Thus, current in the sense transistor corresponds to signal power output by the amplifying transistor. The sense current causes a sense voltage at the collector terminal of the sense transistor. This sense voltage is applied to one input of an error amplifier. The other error amplifier input receives a power control voltage. The error amplifier output is routed back to the base terminal of the amplifying transistor in a negative feedback loop, thereby keeping the power of the signal output by the amplifying transistor at a constant level. In some embodiments the error amplifier output is made independent of changes in the reference voltage. Multiple pairs of corresponding amplifying and sense transistors can be used.Type: GrantFiled: September 24, 2003Date of Patent: February 8, 2005Assignee: TriQuint Semiconductor, Inc.Inventors: Stephen P. Bachhuber, Thomas R. Apel, Robert E. Knapp
-
Publication number: 20040061557Abstract: A sense transistor is placed in a current path between a reference voltage source and ground. The base terminal of the sense transistor is coupled to the base terminal of an amplifying transistor. Thus, current in the sense transistor corresponds to signal power output by the amplifying transistor. The sense current causes a sense voltage at the collector terminal of the sense transistor. This sense voltage is applied to one input of an error amplifier. The other error amplifier input receives a power control voltage. The error amplifier output is routed back to the base terminal of the amplifying transistor in a negative feedback loop, thereby keeping the power of the signal output by the amplifying transistor at a constant level. In some embodiments the error amplifier output is made independent of changes in the reference voltage. Multiple pairs of corresponding amplifying and sense transistors can be used.Type: ApplicationFiled: September 24, 2003Publication date: April 1, 2004Applicant: TriQuint Semiconductor, Inc.Inventors: Stephen P. Bachhuber, Thomas R. Apel, Robert E. Knapp
-
Patent number: 6653902Abstract: A sense transistor is placed in a current path between a reference voltage source and ground. The base terminal of the sense transistor is coupled to the base terminal of an amplifying transistor. Thus, current in the sense transistor corresponds to signal power output by the amplifying transistor. The sense current causes a sense voltage at the collector terminal of the sense transistor. This sense voltage is applied to one input of an error amplifier. The other error amplifier input receives a power control voltage. The error amplifier output is routed back to the base terminal of the amplifying transistor in a negative feedback loop, thereby keeping the power of the signal output by the amplifying transistor at a constant level. In some embodiments the error amplifier output is made independent of changes in the reference voltage. Multiple pairs of corresponding amplifying and sense transistors can be used.Type: GrantFiled: September 3, 2002Date of Patent: November 25, 2003Assignee: TriQuint Semiconductor, Inc.Inventors: Stephen P. Bachhuber, Thomas R. Apel, Robert E. Knapp
-
Patent number: 6529079Abstract: An improved amplifier circuit is disclosed. In one embodiment, the amplifier circuit includes an amplifier transistor that has a base terminal connected to receive an input signal. The amplifier circuit also includes a reference voltage source that generates a reference voltage at a reference voltage output node. A local bias circuit provides a bias voltage to the base terminal of the amplifier transistor. The local bias circuit includes a first transistor that has an emitter terminal coupled to the reference voltage output node, a collector terminal coupled to a supply voltage node, and a base terminal connected to the collector terminal. The local bias circuit also includes a second transistor that has a base terminal coupled to the base terminal of the first transistor, a collector terminal coupled to the supply voltage node, and an emitter terminal coupled to the base terminal of the amplifier transistor.Type: GrantFiled: December 29, 2000Date of Patent: March 4, 2003Assignee: TriQuint Semiconductor, Inc.Inventors: Thomas R. Apel, Robert E. Knapp
-
Publication number: 20020084854Abstract: An improved amplifier circuit is disclosed. In one embodiment, the amplifier circuit includes an amplifier transistor that has a base terminal connected to receive an input signal. The amplifier circuit also includes a reference voltage source that generates a reference voltage at a reference voltage output node. A local bias circuit provides a bias voltage to the base terminal of the amplifier transistor. The local bias circuit includes a first transistor that has an emitter terminal coupled to the reference voltage output node, a collector terminal coupled to a supply voltage node, and a base terminal connected to the collector terminal. The local bias circuit also includes a second transistor that has a base terminal coupled to the base terminal of the first transistor, a collector terminal coupled to the supply voltage node, and an emitter terminal coupled to the base terminal of the amplifier transistor.Type: ApplicationFiled: December 29, 2000Publication date: July 4, 2002Inventors: Thomas R. Apel, Robert E. Knapp
-
Patent number: 4417780Abstract: A connector for electrical connection of differently pitched electrical units, for example, flat multiconductor cable and a pin or socket-connector, includes a housing for supporting contact elements having end portions for respective joinder with the electrical units and a bendable central section. The housing includes interior structure, separate from its contact element support structure, for imposing prescribed bending attitudes upon the contact element central portions.Type: GrantFiled: May 24, 1982Date of Patent: November 29, 1983Assignee: Thomas & Betts CorporationInventor: Robert E. Knapp