Patents by Inventor Shih Hsiung Mo
Shih Hsiung Mo 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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Publication number: 20150358791Abstract: One embodiment of the present invention provides a remote radio head (RRH) for a wireless communication system. The RRH includes a first integrated circuit (IC) chip that comprises multiple functional blocks, a second IC chip that comprises at least a frequency up-converter for up-converting outputs of the DAC block to a radio frequency (RF) domain and a frequency down-converter for down-converting RF signals received from one or more antennas, and a plurality of RF front-end components that are packaged into a system in a package (SiP) module. The multiple functional blocks in the first IC chip include at least a processing unit, a digital-to-analog converter (DAC) block, and an analog-to-digital converter (ADC) block.Type: ApplicationFiled: June 4, 2015Publication date: December 10, 2015Applicant: AVIACOMM INC.Inventors: Hans Wang, Tao Li, Binglei Zhang, Shih Hsiung Mo
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Patent number: 9170336Abstract: One embodiment of the present invention provides a signal-recording system. During operation, the system receives a plurality of radio frequency (RF) signals, separates the RF signals to obtain a first group of RF signals in a first RF band and a second group of RF signals in a second RF band, and simultaneously down-converts the first group of RF signals to a first group of low intermediate-frequency (low-IF) signals in a first IF band and the second group of RF signals to a second group of low-IF signals in a second IF band. The system further converts the first group of low-IF signals and the second group of low-IF signals to the digital domain, and simultaneously processes all of the converted low-IF signals.Type: GrantFiled: October 4, 2012Date of Patent: October 27, 2015Assignee: AVIACOMM INC.Inventors: Hans Wang, Tao Li, Binglei Zhang, Shih Hsiung Mo
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Patent number: 9160277Abstract: One embodiment of the present invention provides a system for controlling operations of a power amplifier in a wireless transmitter. During operation, the system receives a baseband signal to be transmitted, and dynamically switches an operation mode of the power amplifier between a high power back-off mode having a first power back-off factor and a normal mode having a second power back-off factor based on a level of the baseband signal.Type: GrantFiled: September 14, 2012Date of Patent: October 13, 2015Assignee: AVIACOMM INC.Inventors: Hans Wang, Tao Li, Binglei Zhang, Shih Hsiung Mo
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Patent number: 9113411Abstract: One embodiment of the present invention provides a transceiver for a wireless mobile device. The transceiver includes a transmitter, a receiver, and a bandwidth-determination mechanism configured to determine a transmission bandwidth for the transmitter and a receiving bandwidth for the receiver.Type: GrantFiled: December 14, 2011Date of Patent: August 18, 2015Assignee: AVIACOMM INC.Inventors: Shih Hsiung Mo, Hans Wang, Binglei Zhang, Tao Li
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Publication number: 20150173032Abstract: One embodiment of the present invention provides an automatic gain control (AGC) module for a wireless communication system that includes a plurality of amplifiers. The AGC module includes a receiving mechanism configured to receive an input that indicates a total amount of gain adjustment; a collecting mechanism configured to collect a number of parameters associated with the amplifiers; a determining mechanism configured to determine a desired performance requirement; a gain-control engine configured to generate a gain profile for the amplifiers based on the collected parameters, the total amount of gain, and the desired performance requirement; and an output mechanism configured to output a plurality of control signals based on the generated gain profile, wherein a respective control signal independently controls gain of a corresponding amplifier, thereby enabling the wireless communication system to achieve the total amount of gain adjustment while meeting the desired performance requirement.Type: ApplicationFiled: February 27, 2015Publication date: June 18, 2015Inventors: Tao Li, Shih Hsiung Mo, Hans Wang, Binglei Zhang
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Patent number: 9059779Abstract: One embodiment of the present invention provides a device for interfacing between a baseband controller and an RF integrated circuit (IC) chip having a modulator and a demodulator. The device includes an analog-to-digital converter (ADC) coupled to the demodulator located on the RF IC chip. The ADC is configured to receive demodulated analog signals from the demodulator. The device further includes a serializer configured to generate a serial data frame based on the ADC's output, a first serial data port configured to send the serial data frame to the baseband controller, and a control module coupled to the baseband controller.Type: GrantFiled: November 20, 2013Date of Patent: June 16, 2015Assignee: AVIACOMM INC.Inventors: Tao Li, Hans Wang, Binglei Zhang, Shih Hsiung Mo
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Publication number: 20150162916Abstract: One embodiment of the present invention provides a synthesizer. The synthesizer includes one or more tunable oscillators, a frequency-dividing circuit coupled to the tunable oscillators, and a multiplexer coupled to the frequency-dividing circuit. The frequency-dividing circuit includes a number of frequency dividers, and is configured to generate a number of frequency-dividing outputs. At least one frequency-dividing output has a different frequency division factor.Type: ApplicationFiled: February 18, 2015Publication date: June 11, 2015Inventors: Shih Hsiung Mo, Yan Cui, Chung-Hsing Chang
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Patent number: 9054748Abstract: One embodiment of the present invention provides a receiver for wireless communication. The receiver includes a demodulator and at least one filtering mechanism coupled to the demodulator, and an analog-to-digital converter (ADC) coupled to the filtering mechanism. The filtering mechanism can be configured to function as a low-pass filter (LPF) or a band-pass filter (BPF), thereby enabling the receiver to function as a direct-conversion receiver or a low-intermediate frequency (low-IF) receiver.Type: GrantFiled: April 10, 2014Date of Patent: June 9, 2015Assignee: AVIACOMM INC.Inventors: Shih Hsiung Mo, Yan Cui, Chung-Hsing Chang
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Patent number: 9054751Abstract: One embodiment of the present invention provides a transmitter for wireless communication. The transmitter includes a wideband tunable modulator, a number of power amplifiers with a particular power amplifier associated with a particular frequency range, and a wideband power amplifier (PA) driver. The PA driver is configured to receive an output signal from the wideband tunable modulator, amplify the output signal, and send the amplified output signal to at least one of the power amplifiers.Type: GrantFiled: April 10, 2014Date of Patent: June 9, 2015Assignee: AVIACOMM INC.Inventors: Shih Hsiung Mo, Yan Cui, Chung-Hsing Chang
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Publication number: 20150104145Abstract: One embodiment of the present invention provides a signal-recording system. During operation, the system receives a wideband multi-channel radio frequency (RF) signal, which includes a plurality of single-channel RF signals modulated at different carrier frequencies. The system down-converts the received wideband multi-channel RF signal to baseband, and records the down-converted signal.Type: ApplicationFiled: December 22, 2014Publication date: April 16, 2015Inventors: Tao Li, Hans Wang, Shih Hsiung Mo, Binglei Zhang
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Patent number: 8977314Abstract: One embodiment of the present invention provides an automatic gain control (AGC) module for a wireless communication system that includes a plurality of amplifiers. The AGC module includes a receiving mechanism configured to receive an input that indicates a total amount of gain adjustment; a collecting mechanism configured to collect a number of parameters associated with the amplifiers; a determining mechanism configured to determine a desired performance requirement; a gain-control engine configured to generate a gain profile for the amplifiers based on the collected parameters, the total amount of gain, and the desired performance requirement; and an output mechanism configured to output a plurality of control signals based on the generated gain profile, wherein a respective control signal independently controls gain of a corresponding amplifier, thereby enabling the wireless communication system to achieve the total amount of gain adjustment while meeting the desired performance requirement.Type: GrantFiled: September 14, 2012Date of Patent: March 10, 2015Assignee: Aviacomm Inc.Inventors: Tao Li, Shih Hsiung Mo, Hans Wang, Binglei Zhang
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Patent number: 8971825Abstract: One embodiment of the present invention provides a synthesizer. The synthesizer includes one or more tunable oscillators, a frequency-dividing circuit coupled to the tunable oscillators, and a multiplexer coupled to the frequency-dividing circuit. The frequency-dividing circuit includes a number of frequency dividers, and is configured to generate a number of frequency-dividing outputs. At least one frequency-dividing output has a different frequency division factor. The multiplexer is configured to select a frequency-dividing output.Type: GrantFiled: June 13, 2014Date of Patent: March 3, 2015Assignee: Aviacomm Inc.Inventors: Shih Hsiung Mo, Yan Cui, Chung-Hsing Chang
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Publication number: 20150055720Abstract: One embodiment of the present invention provides a system for controlling at least one RF front-end component. During operation, the system receives, at a programmable logic chip from a baseband chip, a command; identifies the RF front-end component based on an address indicated by the command; and sends a control signal included in the command to the identified RF front-end component via the second interface. The programmable logic chip is coupled to the baseband chip via a first interface, and is coupled to the at least one RF front-end component via a second interface.Type: ApplicationFiled: August 21, 2013Publication date: February 26, 2015Applicant: Aviacomm Inc.Inventors: Shao C. Lin, Chung-Hsing Chang, Shih Hsiung Mo
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Publication number: 20150056941Abstract: One embodiment of the present invention provides an RF front-end system. The RF front-end system includes one or more RF front-end components and a programmable logic device, which has a baseband interface for coupling to a baseband digital signal processor (DSP), and a set of component interfaces for coupling to the one ore more RF front-end components. The programmable logic device is configured to: receive, from the baseband DSP via the baseband interface, a command which includes an address and a control signal; identify a component interface from the set of component interfaces based on the address; and send the control signal to the identified component interface, thereby enabling the baseband DSP to control a front-end component coupled to the programmable logic device via the identified component interface.Type: ApplicationFiled: August 20, 2013Publication date: February 26, 2015Applicant: Aviacomm Inc.Inventors: Shao C. Lin, Shih Hsiung Mo
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Patent number: 8929711Abstract: One embodiment of the present invention provides a signal-recording system. During operation, the system receives a wideband multi-channel radio frequency (RF) signal, which includes a plurality of single-channel RF signals modulated at different carrier frequencies. The system down-converts the received wideband multi-channel RF signal to baseband, and records the down-converted signal.Type: GrantFiled: October 4, 2012Date of Patent: January 6, 2015Assignee: Aviacomm Inc.Inventors: Tao Li, Hans Wang, Shih Hsiung Mo, Binglei Zhang
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Publication number: 20140292376Abstract: One embodiment of the present invention provides a synthesizer. The synthesizer includes one or more tunable oscillators, a frequency-dividing circuit coupled to the tunable oscillators, and a multiplexer coupled to the frequency-dividing circuit. The frequency-dividing circuit includes a number of frequency dividers, and is configured to generate a number of frequency-dividing outputs. At least one frequency-dividing output has a different frequency division factor.Type: ApplicationFiled: June 13, 2014Publication date: October 2, 2014Inventors: Shih Hsiung Mo, Yan Cui, Chung-Hsing Chang
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Publication number: 20140220921Abstract: One embodiment of the present invention provides a receiver for wireless communication. The receiver includes a demodulator and at least one filtering mechanism coupled to the demodulator, and an analog-to-digital converter (ADC) coupled to the filtering mechanism. The filtering mechanism can be configured to function as a low-pass filter (LPF) or a band-pass filter (BPF), thereby enabling the receiver to function as a direct-conversion receiver or a low-intermediate frequency (low-IF) receiver.Type: ApplicationFiled: April 10, 2014Publication date: August 7, 2014Applicant: AVIACOMM INC.Inventors: Shih Hsiung Mo, Yan Cui, Chung-Hsing Chang
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Publication number: 20140220915Abstract: One embodiment of the present invention provides a transmitter for wireless communication. The transmitter includes a wideband tunable modulator, a number of power amplifiers with a particular power amplifier associated with a particular frequency range, and a wideband power amplifier (PA) driver. The PA driver is configured to receive an output signal from the wideband tunable modulator, amplify the output signal, and send the amplified output signal to at least one of the power amplifiers.Type: ApplicationFiled: April 10, 2014Publication date: August 7, 2014Applicant: Aviacomm Inc.Inventors: Shih Hsiung Mo, Yan Cui, Chung-Hsing Chang
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Patent number: 8768268Abstract: One embodiment of the present invention provides a synthesizer. The synthesizer includes one or more tunable oscillators, a frequency-dividing circuit coupled to the tunable oscillators, and a multiplexer coupled to the frequency-dividing circuit. The frequency-dividing circuit includes a number of frequency dividers, and is configured to generate a number of frequency-dividing outputs. At least one frequency-dividing output has a different frequency division factor. The multiplexer is configured to select a frequency-dividing output.Type: GrantFiled: November 18, 2011Date of Patent: July 1, 2014Assignee: Aviacomm Inc.Inventors: Shih Hsiung Mo, Yan Cui, Chung-Hsing Chang
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Publication number: 20140146919Abstract: One embodiment of the present invention provides a system for controlling operations of an amplifier in a wireless transmitter. During operation, the system receives a baseband signal to be transmitted, and dynamically switches an operation mode of the amplifier between a high power back-off mode having a first power back-off factor and a normal mode having a second power back-off factor based on a level of the baseband signal.Type: ApplicationFiled: November 20, 2013Publication date: May 29, 2014Applicant: Aviacomm Inc.Inventors: Tao Li, Hans Wang, Binglei Zhang, Shih Hsiung Mo