Patents by Inventor Alfred Riddle
Alfred Riddle 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).
-
Publication number: 20190115900Abstract: A multilayer fringe capacitor includes first and second interdigitated capacitor electrodes, both parallel to and intersecting a first planar surface; third and fourth interdigitated capacitor electrodes, the first and second electrodes parallel to and separated by a non-zero distance from the third and fourth electrodes; a first set of coupling vias that electrically couples the first electrode to the third electrode; and a second set of coupling vias that electrically couples the second electrode to the fourth electrode.Type: ApplicationFiled: December 10, 2018Publication date: April 18, 2019Inventors: Wilhelm Steffen Hahn, Alfred Riddle, Ernie Landi
-
Patent number: 10243598Abstract: A system for integrated self-interference cancellation, comprising a transmit coupler, coupled to a transmit signal, that samples the transmit signal to create a sampled transmit signal; an analog self-interference canceller, coupled to the transmit coupler, comprising a controller; a signal divider, that splits the sampled transmit signal into a set of signal components; a set of phase shifters, wherein a phase shifter of the set shifts a signal component of the set of signal components by a total phase shift value; a set of scalers, wherein a scaler of the set scales the signal component by a total scale factor; a signal combiner, that combines the set of signal components into a self-interference cancellation signal; and a receive coupler, coupled to a receive signal, that combines the self-interference cancellation signal with the receive signal to remove a portion of self-interference present in the receive signal.Type: GrantFiled: March 16, 2017Date of Patent: March 26, 2019Assignee: Kumu Networks, Inc.Inventors: Wilhelm Steffen Hahn, Alfred Riddle, Ernie Landi
-
Patent number: 10236922Abstract: A system for interference mitigation includes: a first transmit coupler; a receive-band noise cancellation system; a first transmit-band filter; a second transmit coupler; a first receive coupler; a transmit-band noise cancellation system; a first receive-band filter; and a second receive coupler.Type: GrantFiled: March 27, 2018Date of Patent: March 19, 2019Assignee: Kumu Networks, Inc.Inventors: Jung-il Choi, Mayank Jain, Wihelm Steffen Hahn, Alfred Riddle
-
Patent number: 10187030Abstract: A multilayer fringe capacitor includes first and second interdigitated capacitor electrodes, both parallel to and intersecting a first planar surface; third and fourth interdigitated capacitor electrodes, the first and second electrodes parallel to and separated by a non-zero distance from the third and fourth electrodes; a first set of coupling vias that electrically couples the first electrode to the third electrode; and a second set of coupling vias that electrically couples the second electrode to the fourth electrode.Type: GrantFiled: April 25, 2017Date of Patent: January 22, 2019Assignee: Kumu Networks, Inc.Inventors: Wilhelm Steffen Hahn, Alfred Riddle, Ernie Landi
-
Publication number: 20180278280Abstract: A system for interference mitigation includes: a first transmit coupler; a receive-band noise cancellation system; a first transmit-band filter; a second transmit coupler; a first receive coupler; a transmit-band noise cancellation system; a first receive-band filter; and a second receive coupler.Type: ApplicationFiled: March 27, 2018Publication date: September 27, 2018Inventors: Jung-il Choi, Mayank Jain, Wihelm Steffen Hahn, Alfred Riddle
-
Publication number: 20180262177Abstract: An analog time delay filter circuit including a first delay circuit block arranged in a modular layout, having a first time delay filter, a first input, a first output, and first and second pass-throughs; and a second delay circuit block arranged in the same modular layout, having a second time delay filter, a second input, a second output, and third and fourth pass-throughs.Type: ApplicationFiled: May 10, 2018Publication date: September 13, 2018Inventors: Wilhelm Steffen Hahn, Alfred Riddle, Ernie Landi
-
Patent number: 10050664Abstract: A system for enhanced linearity mixing includes an input-source signal coupler; a local oscillator (LO) signal coupler; a primary mixer that combines, via heterodyning, the primary-mixer-input signal and the primary-mixer-LO signal to generate a primary-mixer-output signal; a distortion-source mixer that combines, via heterodyning, the distortion-mixer-input signal and the distortion-mixer-LO signal to generate a distortion-mixer-output signal; and an output signal coupler that combines the primary-mixer-output signal and the distortion-mixer-output signal to generate an output signal with reduced non-linearity.Type: GrantFiled: March 27, 2018Date of Patent: August 14, 2018Assignee: Kumu Networks, Inc.Inventors: Wilhelm Steffen Hahn, Alfred Riddle, Ernie Landi
-
Patent number: 10050597Abstract: A time delay filter comprising a substrate; four coupled LC resonators, each having a coupling point; a first capacitor that electrically couples the first coupling point to the second coupling point; a second capacitor that electrically couples the second coupling point to the third coupling point; and a third capacitor that electrically couples the third coupling point to the fourth coupling point; the filter group delaying a signal output at the fourth coupling point relative to a signal input at the first coupling point.Type: GrantFiled: July 18, 2017Date of Patent: August 14, 2018Assignee: Kumu Networks, Inc.Inventors: Wilhelm Steffen Hahn, Alfred Riddle, Ernie Landi
-
Patent number: 9979374Abstract: An analog time delay filter circuit including a first delay circuit block arranged in a modular layout, having a first time delay filter, a first input, a first output, and first and second pass-throughs; a second delay circuit block arranged in the same modular layout, having a second time delay filter, a second input, a second output, and third and fourth pass-throughs; and an interposer circuit block that electrically couples the second input to the first pass-through and the second output to the second pass-through.Type: GrantFiled: April 25, 2017Date of Patent: May 22, 2018Assignee: Kumu Networks, Inc.Inventors: Wilhelm Steffen Hahn, Alfred Riddle, Ernie Landi
-
Patent number: 9819325Abstract: A time delay filter comprising a substrate comprising a first surface and a second surface opposite the first surface; a first LC resonator coupled to the substrate and comprising a first coupling point, a first capacitive element electrically coupled between the first coupling point and the first conductive region, and a first inductive element coupled between the first coupling point and the first conductive region, and comprising a first and second inductor tap; and a second LC resonator coupled to the substrate and comprising a second coupling point, a second capacitive element electrically coupled between the second coupling point and the first conductive region, and a second inductive element electrically coupled between the second coupling point and the first conductive region wherein the system group delays a signal output at a second coupling point relative to a signal input at the first coupling point.Type: GrantFiled: December 16, 2016Date of Patent: November 14, 2017Assignee: Kumu Networks, Inc.Inventors: Wilhelm Steffen Hahn, Alfred Riddle, Ernie Landi
-
Publication number: 20170317657Abstract: A time delay filter comprising a substrate; four coupled LC resonators, each having a coupling point; a first capacitor that electrically couples the first coupling point to the second coupling point; a second capacitor that electrically couples the second coupling point to the third coupling point; and a third capacitor that electrically couples the third coupling point to the fourth coupling point; the filter group delaying a signal output at the fourth coupling point relative to a signal input at the first coupling point.Type: ApplicationFiled: July 18, 2017Publication date: November 2, 2017Inventors: Wilhelm Steffen Hahn, Alfred Riddle, Ernie Landi
-
Publication number: 20170310295Abstract: An analog time delay filter circuit including a first delay circuit block arranged in a modular layout, having a first time delay filter, a first input, a first output, and first and second pass-throughs; a second delay circuit block arranged in the same modular layout, having a second time delay filter, a second input, a second output, and third and fourth pass-throughs; and an interposer circuit block that electrically couples the second input to the first pass-through and the second output to the second pass-through.Type: ApplicationFiled: April 25, 2017Publication date: October 26, 2017Inventors: Wilhelm Steffen Hahn, Alfred Riddle, Ernie Landi
-
Publication number: 20170310296Abstract: A multilayer fringe capacitor includes first and second interdigitated capacitor electrodes, both parallel to and intersecting a first planar surface; third and fourth interdigitated capacitor electrodes, the first and second electrodes parallel to and separated by a non-zero distance from the third and fourth electrodes; a first set of coupling vias that electrically couples the first electrode to the third electrode; and a second set of coupling vias that electrically couples the second electrode to the fourth electrode.Type: ApplicationFiled: April 25, 2017Publication date: October 26, 2017Inventors: Wilhelm Steffen Hahn, Alfred Riddle, Ernie Landi
-
Publication number: 20170187404Abstract: A system for integrated self-interference cancellation, comprising a transmit coupler, coupled to a transmit signal, that samples the transmit signal to create a sampled transmit signal; an analog self-interference canceller, coupled to the transmit coupler, comprising a controller; a signal divider, that splits the sampled transmit signal into a set of signal components; a set of phase shifters, wherein a phase shifter of the set shifts a signal component of the set of signal components by a total phase shift value; a set of scalers, wherein a scaler of the set scales the signal component by a total scale factor; a signal combiner, that combines the set of signal components into a self-interference cancellation signal; and a receive coupler, coupled to a receive signal, that combines the self-interference cancellation signal with the receive signal to remove a portion of self-interference present in the receive signal.Type: ApplicationFiled: March 16, 2017Publication date: June 29, 2017Inventors: Wilhelm Steffen Hahn, Alfred Riddle, Ernie Landi
-
Publication number: 20170179916Abstract: A time delay filter comprising a substrate comprising a first surface and a second surface opposite the first surface; a first LC resonator coupled to the substrate and comprising a first coupling point, a first capacitive element electrically coupled between the first coupling point and the first conductive region, and a first inductive element coupled between the first coupling point and the first conductive region, and comprising a first and second inductor tap; and a second LC resonator coupled to the substrate and comprising a second coupling point, a second capacitive element electrically coupled between the second coupling point and the first conductive region, and a second inductive element electrically coupled between the second coupling point and the first conductive region wherein the system group delays a signal output at a second coupling point relative to a signal input at the first coupling point.Type: ApplicationFiled: December 16, 2016Publication date: June 22, 2017Applicant: Kumu Networks, Inc.Inventors: Wilhelm Steffen Hahn, Alfred Riddle, Ernie Landi
-
Patent number: 9634823Abstract: A system for integrated self-interference cancellation, comprising a transmit coupler, coupled to a transmit signal, that samples the transmit signal to create a sampled transmit signal; an analog self-interference canceller, coupled to the transmit coupler, comprising a controller; a signal divider, that splits the sampled transmit signal into a set of signal components; a set of phase shifters, wherein a phase shifter of the set shifts a signal component of the set of signal components by a total phase shift value; a set of scalers, wherein a scaler of the set scales the signal component by a total scale factor; a signal combiner, that combines the set of signal components into a self-interference cancellation signal; and a receive coupler, coupled to a receive signal, that combines the self-interference cancellation signal with the receive signal to remove a portion of self-interference present in the receive signal.Type: GrantFiled: September 19, 2016Date of Patent: April 25, 2017Assignee: Kumu Networks, Inc.Inventors: Wilhelm Steffen Hahn, Alfred Riddle, Ernie Landi
-
Publication number: 20170104574Abstract: A system for integrated self-interference cancellation, comprising a transmit coupler, coupled to a transmit signal, that samples the transmit signal to create a sampled transmit signal; an analog self-interference canceller, coupled to the transmit coupler, comprising a controller; a signal divider, that splits the sampled transmit signal into a set of signal components; a set of phase shifters, wherein a phase shifter of the set shifts a signal component of the set of signal components by a total phase shift value; a set of scalers, wherein a scaler of the set scales the signal component by a total scale factor; a signal combiner, that combines the set of signal components into a self-interference cancellation signal; and a receive coupler, coupled to a receive signal, that combines the self-interference cancellation signal with the receive signal to remove a portion of self-interference present in the receive signal.Type: ApplicationFiled: September 19, 2016Publication date: April 13, 2017Inventors: Wilhelm Steffen Hahn, Alfred Riddle, Ernie Landi
-
Patent number: 8092084Abstract: A method for precision thermal measurement and control, especially for bioreactors, as well as the correction of temperature sensitive probes such as pH and dissolved oxygen. Typical control requirements are +/?0.1° C. The thermal measurement circuit converts a sensor output to a high level voltage or current with great accuracy and provides noise immunity and sensor isolation. While digital outputs from sensor converters can have the greatest noise immunity, the noise associated with digital circuitry may contaminate low level sensor signals so in many cases an analog sensor converter is preferred because of low noise generation, especially if the converter is near the sensor. The circuit is low cost, reliable, generates minimal heat is immune to, and does not generate noise, and requires minimal calibration effort.Type: GrantFiled: July 28, 2008Date of Patent: January 10, 2012Assignee: Finesse Solutions, LLCInventors: Alfred Riddle, Anthony Sproul
-
Patent number: 7765871Abstract: A system and method for analyzing a target analyte gas concentration using a photoacoustic spectroscopy cell comprising: i) a modulatable light source which provides optical radiation at an absorption wavelength of a target analyte; ii) a resonant acoustic chamber for containing said analyte; iii) a microphone positioned within said chamber whereby the acoustic reactance of the microphone is a substantial factor in determining the acoustic resonant frequency of the acoustic chamber and where the magnitude of the acoustic reactance of the microphone is at least two times the acoustic resistance of the microphone.Type: GrantFiled: January 4, 2008Date of Patent: August 3, 2010Assignee: Finesse Solutions, LLCInventor: Alfred Riddle
-
Publication number: 20100020842Abstract: A method for precision thermal measurement and control, especially for bioreactors, as well as the correction of temperature sensitive probes such as pH and dissolved oxygen. Typical control requirements are ±0.1° C. The thermal measurement circuit converts a sensor output to a high level voltage or current with great accuracy and provides noise immunity and sensor isolation. While digital outputs from sensor converters can have the greatest noise immunity, the noise associated with digital circuitry may contaminate low level sensor signals so in many cases an analog sensor converter is preferred because of low noise generation, especially if the converter is near the sensor. The circuit is low cost, reliable, generates minimal heat is immune to, and does not generate noise, and requires minimal calibration effort.Type: ApplicationFiled: July 28, 2008Publication date: January 28, 2010Inventors: Alfred Riddle, Anthony Sproul