Abstract: Methods and systems for digitally controlling transmitter gain compensation are disclosed. Aspects of one method may include applying an effective negative resistance to differential outputs of amplifying circuitry to compensate for gain changes that may be due to temperature changes. The effective negative resistance may be provided via a plurality of load circuits coupled in parallel to the differential outputs. The plurality of load circuits may have similar effective negative resistances, or the plurality of load circuits may be binary weighted. Each load circuit may be selected via digital control signals that may enable the load circuit. This may allow adjusting of the effective negative resistance by selecting different load circuits.

Abstract: Aspects of a method and system for wide range amplitude detection are provided. In this regard, many electronic systems may require amplitude detection of a variety of signals with widely varying amplitudes. Aspects of the invention may comprise suitable logic, circuitry, and/or code to perform amplitude detection and may be easily configured to accommodate a wide range of amplitudes. In this regard, the configuration of the amplitude detector may be performed via simple design changes and/or may be dynamically configured by suitable logic, circuitry, and/or code. Accordingly, multiplexing a single instance of the wide range amplitude detector and/or multiplexing multiple instances of the wide range amplitude detector may result in reduced design time, reduced circuit size, and/or reduced cost.

Abstract: Aspects of a method and system for a shared high-power transmit path for a multi-protocol transceiver are disclosed. Aspects of one method may include sharing a first power amplifier with a WLAN signal and a Bluetooth signal. The first power amplifier may amplify the WLAN signal and/or the Bluetooth signal simultaneously, or individually. A second power amplifier may be used to amplify the Bluetooth signal, where the first power amplifier may have a higher gain than the second power amplifier. Power may be reduced to the second power amplifier in instances where the first power amplifier is used to amplify the Bluetooth signal. The Bluetooth signal may be communicated to the first power amplifier via a switching circuit, which may comprise one or more switching stages.

Abstract: Aspects of a method and system for an integrated LC resonant current gain boosting amplifier may include amplifying within a chip, via an on-chip LC current gain circuit, an alternating current (AC) generated by an on-chip voltage-to-current converter, and converting within the chip, via an on-chip current-to-voltage circuit; the amplified alternating current to an output voltage. The on-chip LC current gain circuit comprises only passive components, which may include one or more resistors, one or more capacitors, and one or more inductors.

Abstract: The invention enables a gain adjustment in a receiver to improve signal quality by varying resistance of an input resistor array of a bandpass filter, the array having a plurality of resistors in series with switches that out of the path of the current when the resistors are in use.

Abstract: This invention is directed to a hexahydro-cyclooctyl pyrazole cannabinoid modulator compound of formula (I): and a method for use in treating, ameliorating or preventing a cannabinoid receptor mediated syndrome, disorder or disease.

Abstract: This invention is directed to a hexahydro-cycloheptapyrazole cannabinoid modulator compound of formula (I): and a method for use in treating, ameliorating or preventing a cannabinoid receptor mediated syndrome, disorder or disease.

Abstract: A circuit may be provided. The circuit may be a component of a dual mode transmitter such as a transmitter from the 802.11x family. The circuit may comprise an amplifier configured to provide amplification of a signal for transmission in either a first transmission mode or a second transmission mode, using power supplied from a power supply, the amplifier including at least one cascode transistor in series with at least one amplifying transistor. The circuit may further comprise a power controller configured to define an operating characteristic of the at least one cascode transistor, and thereby designate an amount of the power from the power supply that is used by the amplifier during the amplification, based on whether the amplifier is to be operated in the first transmission mode or the second transmission mode.

Abstract: A circuit includes at least two transistors arranged to form a current mirror, at least two transistors operatively coupled to the current mirror, where the transistors are arranged to form a differential pair amplifier, and a follower transistor operatively coupled to the current mirror and to the differential pair. The transistors of the differential pair, the current mirror, and the follower transistor are operatively coupled such that during operation an amplitude of a signal output from the follower transistor is proportional to an amplitude of an signal input into the differential pair.

Abstract: An exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a controller, and a self-testing unit. All of these components can be packaged for integration into a single IC including components such as filters and inductors. The controller for adaptive programming and calibration of the receiver, transmitter and LO generator. The self-testing unit generates is used to determine the gain, frequency characteristics, selectivity, noise floor, and distortion behavior of the receiver, transmitter and LO generator. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or the meaning of the claims.

Abstract: Methods and systems for reducing interference in a signal are disclosed herein. Aspects of the method may comprise generating a first local oscillator signal. The generated first local oscillator signal may be phase-shifted to generate a second local oscillator signal and the second local oscillator signal may be phase-shifted to generate a third local oscillator signal. The first, second, and third local oscillator signals may be combined to generate a combined local oscillator signal, where a third harmonic and/or a fifth harmonic may be eliminated from the combined local oscillator signal. The generated second local oscillator signal may be multiplied by a factor of square root of two (?{square root over (2)}). The first and third local oscillator signals may be added to the multiplied second local oscillator signal. An input signal may be mixed with the generated combined local oscillator signal to generate a mixed output signal.

Abstract: A transmitter includes a first variable gain amplifier (VGA) and a second VGA coupled to an output of the first VGA. The first and second VGAs each comprise a plurality of parallel gain stages. Gains of the first and second VGAs are equal to the sum of the gains of the activated parallel amplifiers within each corresponding plurality of parallel amplifiers. Each parallel amplifier comprises a parallel differential amplifier controlled by a pair of switches to activate and deactivate the parallel differential amplifier. The gains of the first and second VGAs are increased by activating additional parallel amplifiers. The gains of the first and second VGAs are decreased by deactivating additional parallel amplifiers. The variable gains of the first and second VGAs provide an extended gain control with improved local oscillator (LO) leakage interference rejection.

Abstract: A dual power mode transmitter is provided to save power when the transmitter switches from normal operating mode to low power operating mode. The dual power mode transmitter achieves power savings by controlling the amount of current draw in the input stage. Alternatively, the transmitter saves power by regulating the voltage at the output node of the input stage.

Abstract: An exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a controller, and a self-testing unit. All of these components can be packaged for integration into a single IC including components such as filters and inductors. The controller for adaptive programming and calibration of the receiver, transmitter and LO generator. The self-testing unit generates is used to determine the gain, frequency characteristics, selectivity, noise floor, and distortion behavior of the receiver, transmitter and LO generator. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or the meaning of the claims.

Abstract: This invention is directed to a tetrahydro-pyrazolo[3,4-c]pyridine cannabinoid modulator compound of formula (I): and a method for use in treating, ameliorating or preventing a cannabinoid receptor mediated syndrome, disorder or disease.

Abstract: A method and apparatus are provided for enabling a transmitter to have a substantially linear magnitude response and a substantially linear phase response. The transmitter includes first and second programmable gain amplifiers (PGAs). The first PGA is tuned to have a resonant frequency that is less than an operating frequency of the first PGA. The second PGA is tuned to have a resonant frequency that is greater than an operating frequency of the second PGA. A magnitude response at an output of the first PGA and a magnitude response at an output of the second PGA combine to provide a substantially linear magnitude response across a frequency range that includes the operating frequency of the first or second PGA. According to an embodiment, the first and second PGAs have the same operating frequency.

Abstract: A transmitter includes a first variable gain amplifier (VGA) and a second VGA coupled to an output of the first VGA. The first and second VGAs each comprise a plurality of parallel gain stages. Gains of the first and second VGAs are equal to the sum of the gains of the activated parallel amplifiers within each corresponding plurality of parallel amplifiers. Each parallel amplifier comprises a parallel differential amplifier controlled by a pair of switches to activate and deactivate the parallel differential amplifier. The gains of the first and second VGAs are increased by activating additional parallel amplifiers. The gains of the first and second VGAs are decreased by deactivating additional parallel amplifiers. The variable gains of the first and second VGAs provide an extended gain control with improved local oscillator (LO) leakage interference rejection.

Abstract: A transconductance stage providing gain control includes an input stage to convert a first differential input voltage and a second differential input voltage to a first intermediate current and a second intermediate current, respectively. An output stage generates a first output current signal and a second output current signal based on the first and second intermediate currents, respectively. The output stage includes a first plurality of output transistors coupled to a first plurality of corresponding switch resistors and a second plurality of output transistors coupled to a second plurality of corresponding switch resistors. The number of activated switch resistors of the first plurality of switch resistors determines a gain of the first output current signal and a number of activated switch resistors of the second plurality of switch resistors determines a gain of the second output current signal.

Abstract: A circuit includes at least two transistors arranged to form a current mirror, at least two transistors operatively coupled to the current mirror, where the transistors are arranged to form a differential pair amplifier, and a follower transistor operatively coupled to the current mirror and to the differential pair. The transistors of the differential pair, the current mirror, and the follower transistor are operatively coupled such that during operation an amplitude of a signal output from the follower transistor is proportional to an amplitude of an signal input into the differential pair.

Abstract: A method and apparatus for fractional-N synthesis includes processing that begins by generating a 1st feedback frequency from the output frequency based on a fixed divider value. The processing continues by generating a 2nd feedback frequency from the output frequency based on a selectable divider value, a modified fractional value of the divider value, and a modified integer value of the divider value. The processing continues by determining whether the fractional value of the divider value is within a range of fractional values. If so, the 1st feedback frequency is used to produce the output. If the fractional portion of the divider value is not within the range of fractional values, the 2nd feedback frequency is used to produce the output frequency.