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Jantzi
James L. Jantzi, Milverton CA
| Patent application number | Description | Published |
|---|---|---|
| 20110133453 | MULTIPLE GENERATOR WIND TURBINE AND METHOD OF OPERATION THEREOF - A wind turbine and method of operation thereof uses a plurality of generators and a controller to control the operation of the turbine based on various parameters. The generators are each smaller than the total power capacity of the turbine and the controller adds more generators or removes generators based on the speed of the rotor. The controller loads and unloads the generators, which rotate continuously when the wind turbine is operating. | 06-09-2011 |
Jason Jantzi, Kitchener CA
| Patent application number | Description | Published |
|---|---|---|
| 20090036068 | WIRELESS SYSTEM HAVING HIGH SPECTRAL PURITY - A wireless system having high spectral purity output signals. The wireless system has a transmitter circuit for transmitting an output signal and a power amplifier for amplifying the output signal for wireless transmission via an antenna. Positioned in-line with the output signal between the transmitter circuit and the power amplifier is a harmonic trap configured for inhibiting harmonics within a predetermined frequency range generated by the power amplifier from leaking into the transmitter circuit. The harmonic trap can be implemented as a discrete device, or integrated within the transmitter circuit or integrated within the power amplifier. By inhibiting the harmonics from leaking into the transmitter circuit, degraded performance of the transmitter circuit is prevented. | 02-05-2009 |
Stephen Jantzi, Laguna Beach, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20110171919 | SIGNAL TUNING WITH VARIABLE INTERMEDIATE FREQUENCY FOR IMAGE REJECTION AND METHODS - In a method and apparatus for operating a super-heterodyne receiver, a tuning circuit has a local oscillator for frequency shifting a desired channel to a selected frequency and a controller for controlling the local oscillator. The controller determines for each of a number of identified channels, whether an image signal is present at frequencies in the spectrum that when tuned to a first selected frequency interfere, and is operable to select a modified selected frequency at which interference between the image signal and the identified channel is reduced. | 07-14-2011 |
Stephen A. Jantzi, Laguna Beach, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20120086592 | Integrated Upstream Amplifier for Cable Modem and Cable Set-Top Boxes - An upstream amplifier is integrated on a substrate with a digital-to-analog converter (DAC) to form an integrated circuit. In an embodiment, a low-pass filter is also integrated on the substrate. The output signal level of the upstream amplifier is controllable. In embodiments, fine adjustments are made to the output signal level of the upstream amplifier by varying a bias current of the DAC. A software control bit is used to switch between a power-on mode of operation and a power-down mode of operation. The upstream amplifier transmits in a burst mode. The power consumption of the upstream amplifier scales with the amplifier's output signal level. A high degree of matching is attained between the positive and negative paths of the upstream amplifier. This provides high immunity from common-mode disturbances such as substrate noise, clock spurs, and glitches caused by a gain change. | 04-12-2012 |