Abstract: A communication device includes a communication port including network interface circuitry; and a processor, and a non-transitory storage medium configured to store program instructions which, when executed by the processor cause the communication device to perform a network operation comprising: entering into a listening phase; and searching for and attempting to acquire a network.

Abstract: A method and apparatus in which a Tap-Weight Computer (TWC) calculates a Tap-Weight Vector (TWV). The TWV is coupled to a register in each of a plurality of adaptive filter modules. Each such adaptive filter module includes several adaptive filters that each include a tapped delay line. The input to the tapped delay line of each such adaptive filter is one of a plurality of potential interfering signals. The TWV controls the weighting of the outputs from the taps off the delay line. The weighted outputs from each tapped delay line are then subtracted from a received signal which potentially includes interference from the potential interfering signals. The TWC is multiplexed to each of the plurality of adaptive filters so that each adaptive filter is loaded with a TWV calculated by the TWC to reduce the amount of interference contributed by a particular potential interfering signal coupled to an input to that particular adaptive filter.

Abstract: Methods and systems for a low-dropout regulator may comprise a voltage regulator comprising: (a) a pass transistor having a first terminal at a control gate, a voltage input at a second terminal, and a voltage output at a third terminal, and (b) an adaptive control circuit (ACC), electrically coupled to a reference voltage and each of the terminals of the pass transistor. The ACC may determine a ?V between the second and third terminals and cause an error signal to be applied to the first terminal to keep ?V essentially constant as the voltage input varies. The ACC may include a voltage summing circuit electrically coupled to the reference voltage and the input voltage to generate a comparison value. An error amplifier electrically coupled to the control gate and to the voltage summing circuit may generate the error signal from the comparison value and the output voltage.

Abstract: Systems and methods for expanding capacity in a network without the use of frequency gaps between a legacy channel and/or newly added channels are provided. Systems and methods for maintaining legacy node operability in the expanded capacity network are also provided by determining the increased power experienced by a legacy node as a result of the newly added channels, and dynamically adapting the modulation utilized on the legacy channel commensurate with the increased power.

Abstract: Systems and methods for correcting frequency error in a received signal include: receiving a satellite signal, the satellite signal having a bandwidth and a center frequency; determining the profile of the satellite signal; computing the center frequency of the satellite signal based on the profile of the received signal; and generating a reference signal at the computed center frequency. The systems and methods may further include computing a center frequency of each of a plurality of satellite signals based on the computed center frequency. Determining the profile may include sweeping a tuner above and below a given reference frequency; measuring the received signal strength during the sweeping operation; and determining the profile based on the received signal strength.

Abstract: Methods and systems for digitization of broadband analog signals may comprise in a radio frequency (RF) transceiver comprising a diplexer, first and second automatic gain and slope control (ASCS) modules, and a combiner): receiving an input RF signal comprising at least two signals, splitting the input RF signal in the frequency domain into first and second signals of different frequency utilizing the diplexer, configuring a frequency-dependent gain level for each of the first and second signals utilizing the first and second ASCS modules, and combining output signals from the first and second ASCS modules utilizing the combiner. The frequency dependent gain levels of the first and second signals may be configured to enable an ADC receiving the combined signal to operate with an effective number of bits (ENOB) of approximately 10.

Abstract: Methods and systems are provided for power management in communication devices, particularly based on cable connectivity. In a communication device that includes a communication port, including a first connector and a signal path communicatively coupled to the connector, measurements associated with the signal path may be obtained. Based on the obtained measurements, it may be determined whether an external cable is mated to the connector, and the communication device may be transition to a sleep mode when it is determined that the external cable is not mated to the connector. Determining whether the external cable is mated may be based on detecting presence or absence of a signal on the signal path, based on evaluating signal characteristics of a signal present on the signal path, measuring of voltage or current at the communication port, and/or energy measurements associated with one or more particular frequencies.

Abstract: A radio frequency (RF) transmission line includes a first conductive layer, a second conductive layer conductively isolated from the first conductive layer, a center conductor disposed between the first conductive layer and the second conductive layer, dielectric material disposed between the first conducive layer and the second conductive layer and at least partially surrounding the center conductor, and an RF choke element that conducts a direct current signal between the center conductor and the second conductive layer.

Abstract: Systems and methods for dynamically adjusting the gain in a receiver front end to have a desired amount of headroom, based upon a measurement of the signal to noise ratio (SNR) of the output of a digital to analog converter and the amount of degradation to the SNR due to previous adjustments to the gain.

Abstract: Systems and methods for reducing the amount of power consumed by an electronic or electrical device by using collected knowledge of the operation of the device to determine when to place the device in an ultra-low power consumption mode.

Abstract: Methods and systems are provided for spreading spectral density of digital-to-analog conversion output signals. A spreading circuit may spread a digital-to-analog converter (DAC) output signal over a particular frequency spectrum, with the spreading circuit receiving the DAC output signal; generating a plurality of internal control signals; and generating based on the DAC output signal and the one or more internal control signal a corresponding spread output signal. The Internal control signals may comprise at least a first control signal, generated based on sequences meeting at least one particular criterion, a second control signal, generated based on a feedback corresponding to an intermediate output generated within the spreading circuit. The spreading circuit may generate the first control signal based on zero-sum sequences. The spreading circuit may generate a stream of pulses based on the intermediate output, and may generate the feedback signal based on the stream of pulses.

Abstract: Systems and methods for providing power to a home entertainment integrated circuit chip are disclosed. The home entertainment integrated circuit chip can operate in at least two power control modes: “power on” mode and “standby” mode. In power on mode, power is supplied to IC core module from a main power supply. The power supplied to the IC core module is isolated from power supplied to a standby island. Accordingly, during the second mode power is applied only to the standby power island through a regulator internal to the integrated circuit chip. The regulator is coupled to an external peripheral input/output (I/O) power supply that is independent of the main power supply.

Abstract: Methods and systems are provided for power management in communication devices, particularly based on cable connectivity. A communication device that comprise a communication port, comprising a first connector and a signal path communicatively coupled between device components and the connector, may be operable, such as via a power management component in the communication device, to determine whether an external cable is mated to the first connector and to transition the communication device to a sleep mode if it is determined that an external cable is not mated to the first connector.

Abstract: Systems and methods for controlling a power amplifier includes combining a digital modulated data signal with a digital bias signal to generate a combined digital signal, the digital bias signal generated based on an envelope for the modulated data signal; converting, by a digital-to-analog converter, the combined digital signal into a combined analog signal, the combined analog signal comprising an analog modulated data signal and an analog envelope bias signal; and separating the analog modulated data signal and the analog bias signal onto separate signal paths, wherein the converting is performed using a single digital-to-analog converter.

Abstract: Methods and systems for a multi-band transceiver front-end architecture with reduced insertion loss may comprise, in a transceiver comprising a first plurality of switches (each with a common terminal coupled to a transmit signal path), a second plurality of switches (each with a common terminal coupled to a receive signal path), and a plurality of communications links: operatively coupling the transmit signal path to one of the communications links using one of the first switches when the transceiver is in a transmit mode, and operatively coupling the receive signal path to one of the communications links using one of the second switches when the transceiver is in a receive mode. An off capacitance of at least one of the switches may be reduced utilizing an operatively coupled inductive element. The inductive element may comprise an inductor operatively coupled in series with the transmit signal path.

Abstract: Methods and systems for digitization of broadband analog signals may comprise in a radio frequency (RF) transceiver comprising a diplexer, first and second automatic gain and slope control (ASCS) modules, and a combiner): receiving an input RF signal comprising at least two signals, splitting the input RF signal in the frequency domain into first and second signals of different frequency utilizing the diplexer, configuring a frequency-dependent gain level for each of the first and second signals utilizing the first and second ASCS modules, and combining output signals from the first and second ASCS modules utilizing the combiner. The frequency dependent gain levels of the first and second signals may be configured to enable an ADC receiving the combined signal to operate with an effective number of bits (ENOB) of approximately 10.

Abstract: Systems and methods for dynamically adjusting transmit gain in a transceiver. The gain is adjusted in order to provide the maximum gain. The amount of distortion is measured. The gain is increased until the distortion reaches a predetermined limit. The gain of several components can be adjusted independently.

Abstract: Systems and methods for dynamically adjusting the gain in a receiver front end to have a desired amount of headroom, based upon a measurement of the signal to noise ratio (SNR) of the output of a digital to analog converter and the amount of degradation to the SNR due to previous adjustments to the gain.

Abstract: A transceiver comprising a transmitter and a receiver is a component of a user terminal. A transmitter-check signal is transmitted from the transceiver to a remote node. Errors in the transmitter-check signal are measured at the remote node. Transmitter-correction information based on the errors is determined within the remote node and sent back to the user terminal. The user terminal utilizes the transmitter-correction information to set a correction module in the terminal to counteract the errors within the transmitter.

Abstract: Circuits and methods for reducing the cost and/or power consumption of a user terminal and/or the gateway of a telecommunications system (550) that may include a telecommunications satellite. Embodiments generate a dynamic input bias signal based upon an information signal envelope (which may be pre-distorted) which is applied to the signal input of a power amplifier (PA), thus reducing average power consumption. Other embodiments further include dynamic linearization (518) of the information signal, and/or variation of the supply voltage to the power amplifier (PA) as a function of the envelope of the information signal. Another aspect is a multi-stage “chained” feedback regulated voltage supply circuit for providing two or more output voltages that may be used as alternative supply voltages to a power amplifier (PA).