Patents by Inventor Claus Muschallik
Claus Muschallik 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).
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Patent number: 11930430Abstract: An application-specific wireless communication network for use in an industrial environment based on parameters defined by the IEEE 802.11 standard, modified by providing software-defined control of an assigned operating frequency band and software-defined control of the channel size, allowing the channel size to be relatively small as appropriate for the particular industrial application. The application-specific wireless communication network further controls other parameters defined by the standard to configure at least optimum transmitter power, receiver sensitivity, transmission latency, and ACK-retransmit to values appropriate for the specific industrial application.Type: GrantFiled: July 18, 2019Date of Patent: March 12, 2024Assignee: Doodle Labs (SG) PTE LTD.Inventors: Nimesh D. Parikh, Claus Muschallik, Meng Huan Gan, Aaron Vinh Thanh Do, Sameer Garg, Simon Wunderlich
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Patent number: 11611363Abstract: A radio module is configured to operate within a specialized frequency band, for example a band that has recently become available for use in the public domain. Superheterodyne techniques are used by a transmitter component of the radio module to frequency shift a conventional wireless data signal (e.g., used for WiFi, LTE telecommunications, etc.) into a designated band; a receiver component of the radio module is similarly configured to receive signals transmitted on the designated band and shift back into the conventional RF band (where standard components are able to further process the received signal).Type: GrantFiled: September 9, 2019Date of Patent: March 21, 2023Assignee: Doodle Labs (SG) PTE LTDInventors: Nimesh D. Parikh, Claus Muschallik, Meng Huan Gan, Aaron Vinh Thanh Do, Sameer Garg
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Publication number: 20220052720Abstract: A radio module is configured to operate within a specialized frequency band, for example a band that has recently become available for use in the public domain. Superheterodyne techniques are used by a transmitter component of the radio module to frequency shift a conventional wireless data signal (e.g., used for WiFi, LTE telecommunications, etc.) into a designated band; a receiver component of the radio module is similarly configured to receive signals transmitted on the designated band and shift back into the conventional RF band (where standard components are able to further process the received signal).Type: ApplicationFiled: September 9, 2019Publication date: February 17, 2022Applicant: Doodle Labs (SG) PTE LTDInventors: Nimesh D. Parikh, Claus Muschallik, Meng Huan Gan, Aaron Vinh Thanh Do, Sameer Garg
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Publication number: 20210306820Abstract: An application-specific wireless communication network for use in an industrial environment based on parameters defined by the IEEE 802.11 standard, modified by providing software-defined control of an assigned operating frequency band and software-defined control of the channel size, allowing the channel size to be relatively small as appropriate for the particular industrial application. The application-specific wireless communication network further controls other parameters defined by the standard to configure at least optimum transmitter power, receiver sensitivity, transmission latency, and ACK-retransmit to values appropriate for the specific industrial application.Type: ApplicationFiled: July 20, 2018Publication date: September 30, 2021Applicant: Doodle Labs (SG) PTE LTDInventors: Nimesh D. Parikh, Claus Muschallik, Meng Huan Gan, Aaron Vinh Thanh Do, Sameer Garg, Simon Wunderlich
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Patent number: 10498371Abstract: An RF front-end system is formed to include tunable frequency converters within the transmit and receive sections of each channel, allowing for conventional, limited-bandwidth wireless devices to transmit and receive a broad range of frequencies. Both the transmit and receive sections use superheterodyne frequency conversion to provide the translation between the limited frequency band associated with conventional wireless devices and wide frequency band (e.g., between about 100 MHz and 7000 MHz) approved for wireless communication. By virtue of using a local oscillator that can be widely tuned over the complete available frequency spectrum, the up-converted signals used for transmission can be expanded over this wider frequency selection.Type: GrantFiled: May 23, 2018Date of Patent: December 3, 2019Inventors: Nimesh D Parikh, Claus Muschallik, MH Gan, Aaron Do
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Patent number: 7920462Abstract: This disclosure relates to amplitude correction for orthogonal frequency division multiplexing signals received by a communication device. An amplitude attenuation estimation is performed for amplitude correction on received OFDM signals.Type: GrantFiled: October 1, 2007Date of Patent: April 5, 2011Assignee: Infineon Technologies AGInventors: Claus Muschallik, Yun Ye, Jien Mei Loh, Tee Yong Neo
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Publication number: 20090156155Abstract: The invention is related to a receiver and a tuner respectively, particularly to a television receiver or tuner which can be integrated in a single circuit device. The invention is also related to a method for processing RF signal.Type: ApplicationFiled: December 17, 2007Publication date: June 18, 2009Applicant: Infineon Technologies AGInventors: Erwin Krug, Claus Muschallik, Lars Persson
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Publication number: 20090086618Abstract: This disclosure relates to amplitude correction for orthogonal frequency division multiplexing signals received by a communication device. An amplitude attenuation estimation is performed for amplitude correction on received OFDM signals.Type: ApplicationFiled: October 1, 2007Publication date: April 2, 2009Applicant: Infineon Technologies AGInventors: Claus Muschallik, Yun Ye, Jien Mei Loh, Tee Yong Neo
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Patent number: 7203466Abstract: A transmitting and receiving unit includes a receiving branch and a transmitting branch that are in each case constructed for conducting complex signals, with a control device that drives a switch by which either a phase-locked loop is switched through to frequency converters provided at the transmitting and receiving end, for providing a common carrier frequency, or in each case an independently operating PLL is provided for the transmitting and receiving branch. Such a configuration enables the transmitter, for example, to operate with direct conversion whereas the receiver can operate, for example, on the low IF principle. The invention is suitable for OFDM multi-carrier systems.Type: GrantFiled: September 26, 2003Date of Patent: April 10, 2007Assignee: Infineon Technologies AGInventors: Claus Muschallik, Bernd Pflaum, Robert Sedlmaier
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Publication number: 20060170828Abstract: An integrated circuit for a mobile television receiver has a processing path for I/Q demodulation, a processing path for low IF demodulation, and a switch that determines which of the processing paths is used to generate an output. The integrated circuit may be employed irrespective of which of the two processing standards is required for received mobile TV signals. The integrated circuit may be designed to reduce power consumption in the mobile device, for example by disabling sections of the integrated circuit when they are not in use.Type: ApplicationFiled: January 11, 2006Publication date: August 3, 2006Inventors: Claus Muschallik, Hwang Low, Tee Neo
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Publication number: 20040087279Abstract: A transmitting and receiving unit includes a receiving branch and a transmitting branch that are in each case constructed for conducting complex signals, with a control device that drives a switch by which either a phase-locked loop is switched through to frequency converters provided at the transmitting and receiving end, for providing a common carrier frequency, or in each case an independently operating PLL is provided for the transmitting and receiving branch. Such a configuration enables the transmitter, for example, to operate with direct conversion whereas the receiver can operate, for example, on the low IF principle. The invention is suitable for OFDM multi-carrier systems.Type: ApplicationFiled: September 26, 2003Publication date: May 6, 2004Inventors: Claus Muschallik, Bernd Pflaum, Robert Sedlmaier
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Patent number: 6636727Abstract: A phase locked loop system for tuning the reception frequency of a receiver for digitally modulated received signals and analog-modulated received signals has at least one voltage controlled oscillator for producing an oscillator signal for a reception frequency tuning. A first frequency divider is provided for dividing the frequency of the oscillator signal to a nominal comparison frequency as a function of a receiving channel selection signal. A second frequency divider is provided for dividing a reference frequency as a function of a reception mode switching signal. A phase comparison circuit is provided for comparing the signals supplied by the frequency dividers in order to produce a tuning voltage for the voltage controlled oscillator wherein the gain of the phase comparison circuit is adjustable in order to optimize the phase noise.Type: GrantFiled: February 26, 2001Date of Patent: October 21, 2003Assignee: Infineon TechnologiesInventors: Claus Muschallik, Bernd Pflaum, Heinz Lang
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Patent number: 6304545Abstract: In an OFDM system, the so-called self-noise component, which represents that noise component of the respective carrier which is caused by the carrier itself and is mapped onto itself, can be estimated and corrected by shifting all the carriers back in the receiver by multiplication by a factor which is determined by averaging. The so-called external-noise component, which is caused by adjacent carrier interference from the so-called leakage effect of the Fast Fourier transform (FFT2) used in the receiver for demodulation cannot be corrected using this method. In addition to the demodulation FFT, a further FFT (FFT1) is used in the receiver to estimate the self-noise component (&psgr;e). The estimated self-noise component is used to reproduce the orthogonality between the carriers by correction before the demodulation FFT, to thereby prevent crosstalk. The additional FFT (FFT1) may have a shorter length than the demodulation FFT (FFT2), so that the additional complexity is negligible.Type: GrantFiled: August 24, 1998Date of Patent: October 16, 2001Assignee: Deutsche Thomson-Brandt GmbHInventors: Veit Armbruster, Claus Muschallik
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Publication number: 20010027092Abstract: A phase locked loop system for tuning the reception frequency of a receiver for digitally modulated received signals and analog-modulated received signals has at least one voltage controlled oscillator for producing an oscillator signal for a reception frequency tuning. A first frequency divider is provided for dividing the frequency of the oscillator signal to a nominal comparison frequency as a function of a receiving channel selection signal. A second frequency divider is provided for dividing a reference frequency as a function of a reception mode switching signal. A phase comparison circuit is provided for comparing the signals supplied by the frequency dividers in order to produce a tuning voltage for the voltage controlled oscillator wherein the gain of the phase comparison circuit is adjustable in order to optimize the phase noise.Type: ApplicationFiled: February 26, 2001Publication date: October 4, 2001Inventors: Claus Muschallik, Bernd Pflaum, Heinz Lang
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Method and circuit arrangement for improving carrier separation for the transmission of OFDM signals
Patent number: 6088327Abstract: In the case of the OFDM method, a large number of modulated carriers are transmitted using frequency division multiplexing, a spectrum having a virtually rectangular shape being produced as a result of the large number of carriers. In order to separate the carriers from one another again in the receiver, a Fast-Fourier-Transformation is carried out, it then being possible to separate each carrier cleanly from the others provided the carriers are exactly orthogonal with respect to one another. The carrier orthogonality can, however, be disturbed by various causes. Furthermore, the wanted signal must be separated from the undesired adjacent channel signals by analog or digital filtering in the receiver. In order to improve carrier and channel separation, the selectivity of the FFT filtering can be increased by enlarging the number of FFT components. However, this normally leads to an undesirably sharp increase in the computation complexity.Type: GrantFiled: November 17, 1997Date of Patent: July 11, 2000Assignee: Deutsche Thomson-Brandt GmbHInventors: Claus Muschallik, Veit Armbruster