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| Number | Title | Issue Date |
| 8188788 | Systems and methods for a discrete resizing of power devices with concurrent power combining structure for radio frequency power amplifier Systems and methods are provided for discrete resizing of power devices. The systems and methods can include a plurality of unit power amplifiers arranged in parallel, where each unit power amplifier includes at least one first input port, at least one first output ... | 05/29/2012 |
| 8164383 | Circuits and methods for amplifying signals In one embodiment, the present disclosure includes an amplifier comprising first and second output stages. The first output stage receives first power supply voltages and the second output stage receives second power supply voltages greater than the first power supp... | 04/24/2012 |
| 8149049 | Low noise receiving apparatus A low noise receiving apparatus includes an amplifier which inputs an input signal, an output matching circuit which is connected between the amplifier and an output terminal which matches an impedance of an output side of the amplifier, a bypass circuit which bypas... | 04/03/2012 |
| 8149050 | Cascaded amplifiers with transformer-based bypass mode Cascaded amplifiers with a transformer-based bypass mode are described. In an exemplary design, an apparatus includes first and second amplifiers and a circuit. The first amplifier (e.g., a driver amplifier) provides amplification in a high gain mode and a bypass mo... | 04/03/2012 |
| 8138829 | Segmented power amplifier with varying segment activation Various apparatuses and methods for varying segment activation in a segmented power amplifier are disclosed herein. For example, some embodiments provide a power amplifier including an input, an output, a plurality of amplifier segments and a controller. The amplifi... | 03/20/2012 |
| 8138828 | Active mute scheme for an amplifier Conventional muting circuitry for amplifiers (which usually uses clamps) generally has about 20-30 dB of attenuation. Here, an integrated circuit or IC is provided that includes an amplifier, switch networks, and a controller. The controller provides control signals... | 03/20/2012 |
| 8130033 | Switching low noise amplifier Disclosed are embodiments of an integrated circuit device, method and design structure for selectively amplifying one of multiple received input signals. The embodiments incorporate at least two first stage transistors and a single second stage transistor. The first... | 03/06/2012 |
| 8106708 | High speed low power multiple standard and supply output driver A multi-mode driver and method therefore includes a plurality of amplifiers, an adjustable load block, and adjustable current supply circuitry that selectively adjusts current magnitudes supplied to at least one of the plurality of amplifiers. The multi-mode driver ... | 01/31/2012 |
| 8102205 | Amplifier module with multiple operating modes An amplifier module with multiple operating modes is described. In an exemplary design, the amplifier module includes an amplifier (e.g., a power amplifier), a switch, and an output circuit. The amplifier receives and amplifies an input signal and provides an amplif... | 01/24/2012 |
| 8089312 | Amplifying circuit with bypass circuit, and electronic device using the same An amplifying circuit with a bypassing function includes an input terminal to which a signal is input from an antenna, an amplifier connected to the input terminal, a first inductor connected between the input port and a ground, and a bypass circuit connected betwee... | 01/03/2012 |
| 8063699 | Anti-pop circuit Presently many audio chips suffer from pop issues, which is especially serious for single ended audio drivers. An audio pop is a disturbance in the output caused by a sudden transition of chip power, particularly when a chip is powered on or powered off. Furthermore... | 11/22/2011 |
| 8063698 | Bypassing amplification An integrated circuit includes a power amplification circuit and a switch circuit wherein the switch circuit is coupled to an output of the power amplification circuit, a bypass input, and a control input, such that the switch selectively couples the power amplifica... | 11/22/2011 |
| 8044717 | Amplifier circuit and method therefor In one embodiment, an amplifier circuit is formed to minimize pop and click noise on the outputs of the amplifier circuit. The amplifier circuit is configured to place an output stage of the amplifier circuit in a high impedance state to minimize the pop and click n... | 10/25/2011 |
| 8044716 | Adjustable segmented power amplifier An adjustable, segmented amplifier including (i) a first fixed stage configured to amplify an analog signal in accordance with a fixed amplification, and provide the analog signal amplified in accordance with the fixed amplification to a first common node. The adjus... | 10/25/2011 |
| 8035443 | Amplifier with gain expansion stage Techniques are disclosed for extending an amplifier's linear operating range by concatenating an amplifier exhibiting gain compression with a gain expansion stage. In an exemplary embodiment, a gain expansion stage incorporates a Class-B stage, a Class-AB stage, or ... | 10/11/2011 |
| 8008970 | Apparatus and method for enabled switch detection Apparatuses and methods for enabled switch detection are disclosed. In one embodiment, an apparatus includes a complimentary metal oxide semiconductor (CMOS) switch having a gate, a drain, a source, and a well. The source and drain are formed in the well, and the ga... | 08/30/2011 |
| 7999611 | Differential amplifying device A differential amplifying device includes a first differential amplifying unit that receives an input signal and a reference voltage. The first differential amplifying unit amplifies the input signal to generate an output signal when a sensing signal is at a first l... | 08/16/2011 |
| 7990212 | Modulated audio amplifier output enable control A modulated amplifier output enable control eliminates audible pops when enabling and disabling an audio amplifier output stage. The output of the audio amplifier is transitioned between an enabled state and a disabled state using a modulated control signal that ena... | 08/02/2011 |
| 7956682 | Amplifier An amplifier including a first transistor including a gate coupled to an input terminal and a grounded source; a load resistor provided between a drain of the first transistor and a power supply; an output terminal coupled to a node between the drain of the first tr... | 06/07/2011 |
| 7944290 | Trans-impedance amplifier Systems and apparatus for converting an input current signal into two or more output voltage signals on an integrated circuit. In one aspect, an integrated circuit includes a first trans-impedance amplifier that includes a first cascode amplifier; and a second trans... | 05/17/2011 |
| 7944291 | Power amplifier having parallel amplification stages and associated impedance matching networks An amplification device includes a series combination of a driver stage, an output terminal matching network, and a secondary amplification stage. The driver stage includes a driver amplifier and an output matching network. The secondary amplification stage includes... | 05/17/2011 |
| 7928799 | Power amplifying apparatus and mobile communication terminal A power amplifying apparatus includes an input terminal configured to receive an input signal, a first power amplifier biased for class A or class AB operation which is configured to amplify the input signal, an output terminal connected to an output of the first po... | 04/19/2011 |
| 7915953 | Amplifier circuit and method therefor In one embodiment, an amplifier circuit is formed to minimize pop and click noise on the outputs of the amplifier circuit. The amplifier circuit is configured to place an output stage of the amplifier circuit in a high impedance state to minimize the pop and click n... | 03/29/2011 |
| 7911269 | Ultra low noise high linearity LNA for multi-mode transceiver An amplifier for operating at low, middle or high linearity modes, the amplifier comprising a first low noise amplifier (LNA) coupled to a second low noise amplifier for providing amplification; a first degeneration inductor coupled to the first LNA for providing im... | 03/22/2011 |
| 7911270 | Broadband microwave device with switchable gain The invention relates to a broadband microwave device with switchable gain comprising a microwave signal input E and output S, a distributed amplifier with a plurality of amplifying cells comprising an input transmission line for an input signal applied to the micro... | 03/22/2011 |
| 7898325 | Amplifier with bypass switch An amplifying circuit of a receiver for receiving a signal in a wireless network includes an amplifier and a switch. The amplifier includes an amplifying transistor having a gate connected to an input for receiving the signal and a source/drain connected to a voltag... | 03/01/2011 |
| 7898324 | Method and system for glitch suppression in dual-amplifier circuit An apparatus includes first and second amplifiers, each having an input coupled to an audio signal input and an output coupled to an audio signal output. The second amplifier also has a feedback path from its output to its input. A first switch can be operated to se... | 03/01/2011 |
| 7880540 | Amplifying system and related method An amplifying system includes an amplifier operated according to a supply voltage, and a detector coupled to the amplifier for generating a first control signal to the amplifier to disable an output stage of the amplifier when the supply voltage reaches a threshold.... | 02/01/2011 |
| 7863976 | Adjustable segmented power amplifier An adjustable stage in an amplifier. The adjustable stage generally comprises a first common node, a second common node and a plurality of independently selectable parallel amplifier segments. Each of the parallel segments may have an input at the first common node ... | 01/04/2011 |
| 7859332 | Amplification circuit and method therefor In one embodiment, an amplification circuit charges a filter capacitor (14) and an input capacitor (12) with a substantially constant current and subsequently forms a delay prior to operating the amplification circuit to amplify input signals. ... | 12/28/2010 |
| 7852151 | Variable gain amplifier A method of varying the gain of an amplifier and an amplifier array are provided. The amplifier array includes two or more amplifier stages (201, 202) connected in parallel with each amplifier stage having a gain control means. Input signal means (203, 204... | 12/14/2010 |
| 7834686 | Power amplifier Methods to implement power control in a digital power amplifier are described. ... | 11/16/2010 |
| 7830206 | Amplifier circuit An extraction circuit is connected to an input path of an output amplifier. When the power is turned on, the extraction circuit extracts current on the basis of a difference between the normal rise of the supply voltage and a delayed supply voltage. Therefore, a ste... | 11/09/2010 |
| 7821334 | Amplification circuit The present invention is aimed at realizing an amplifying circuit whose chip size is prevented from being significantly increased even if the number of compatible frequencies increases, and which has a wide dynamic range when it operates under a low voltage. The amp... | 10/26/2010 |
| 7816983 | Fast switch for controlling a differential-pair amplifier A differential-pair amplifier comprising a transistor pair. The differential-pair amplifier includes a current source coupled to the transistor pair for providing a bias current to the transistor pair. The differential-pair amplifier also includes a switching mechan... | 10/19/2010 |
| 7812667 | System and method of enabling a signal processing device in a relatively fast manner to process a low duty cycle signal A system and method of improving the power efficiency of a receiver for low duty cycle applications. In one aspect, the receiver includes a low noise amplifier (LNA) that is capable of being enabled in a relatively quick fashion so as to amplify an incoming signal w... | 10/12/2010 |
| 7800438 | Bypass device for microwave amplifier unit The invention relates to a bypass device for a microwave amplifier unit, the microwave amplifier unit (1) comprising at least one low noise amplifier (LNA) and amplifying communication signals in at least one microwave frequency band above 500 MHz, the bypass... | 09/21/2010 |
| 7764119 | Voltage control circuit A circuit for controlling voltage includes a condenser having a first end coupled to an input node of a target circuit, and a second end coupled to a predetermined fixed potential, a constant current source coupled to the first end of the condenser, and a control ci... | 07/27/2010 |
| 7760016 | Anti-pop circuits and methods for audio amplifiers using variable resistors Anti-pop circuits are provided for an audio amplifier that uses a power supply voltage and a ground voltage to drive a load with an audio signal that is centered about a virtual analog ground. These anti-pop circuits include a variable resistor and a capacitor that ... | 07/20/2010 |
| 7750732 | Adaptive rail amplifier (ARA) technology An efficient class-G amplifier having multiple rails is configured with parallel class AB amplifiers powered by at least one rail supplying a voltage that can be varied in response to signal characteristics, typically as sensed at an output across a load. In a speci... | 07/06/2010 |
