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| Number | Title | Issue Date |
| 8183930 | Power amplifier device This invention provides a power amplifier device that satisfies both of delivering a high output and reducing the chip area occupied by the power amplifier device. The power amplifier device formed over a substrate comprises primary inductors arranged in a generally... | 05/22/2012 |
| 8183929 | Multi-chip doherty amplifier with integrated power detection In accordance with an exemplary embodiment of the present invention, a Doherty amplifier is provided for applications in radio frequency, microwave, and other electronic systems. An exemplary Doherty amplifier comprises a first MMIC having a first power detector, an... | 05/22/2012 |
| 8174322 | Power control of reconfigurable outphasing chireix amplifiers and methods Various embodiments relate to a reconfigurable integrated digital Chireix out-phasing power amplifier for use in high power base stations is described and a related method of said design. The power amplifier may include a power transistor circuitry having plurality ... | 05/08/2012 |
| 8169264 | Distributed Doherty amplifiers Doherty and distributed amplifier (DA) designs are combined to achieve, wideband amplifiers with high efficiency dynamic range. A modified Doherty amplifier includes a wideband phase shifter providing first and second outputs, a main amplifier coupled to the first o... | 05/01/2012 |
| 8149060 | Low distortion amplifier and Doherty amplifier using low distortion amplifier Provided is a low distortion amplifier which can satisfy both securement of a setting space in a vicinity of a transistor and low impedance. The low distortion amplifier includes a short stub having a leading end thereof short-circuited with a high-frequency short-c... | 04/03/2012 |
| 8134409 | Radio frequency power amplifier A radio frequency power amplifier includes an input terminal to which a radio frequency signal is applied; a first hetero-bipolar transistor (HBT), which amplifies the radio frequency signal; a second HBT, which amplifies the radio frequency signal; a matching circu... | 03/13/2012 |
| 8130040 | Power amplifier with two transistors and traces forming two transformers Methods to implement low cost, high efficiency, low loss power combiner with novel matching circuits are disclosed. A narrow band power combiner enables a high power and high efficiency radio frequency power amplifier to be realized using multiple low voltage CMOS t... | 03/06/2012 |
| 8130041 | Power amplifier device Provided is a power amplifier device. The power amplifier device includes: a cutoff unit cutting off a direct current (DC) component of a signal delivered from a signal input terminal; a circuit protecting unit connected to the cutoff unit and stabilizing a signal d... | 03/06/2012 |
| 8125276 | Sharing of inductor interstage matching in parallel amplification system for wireless communication systems A power amplifier system can include a plurality of driver amplifiers and a plurality of power amplifiers, where each driver amplifier and power amplifier includes at least one respective input port and at least one respective output port. The power amplifier system... | 02/28/2012 |
| 8115554 | Semiconductor device According to one embodiment, there is a semiconductor device including a first active element, a second active element connected in parallel with the first active element, and a first stabilization circuit connected between a gate of the first active element and a g... | 02/14/2012 |
| 8106711 | Stacked pre-driver amplifier A stacked pre-driver stage and a power amplifier including the stacked pre-driver stage are described. The stacked pre-driver stage comprises stacked pre-drivers arranged in series between a supply voltage and a reference voltage. Each pre-driver includes a pre-driv... | 01/31/2012 |
| 8076976 | Semiconductor device The present invention provides a technology capable of achieving an improvement in the characteristic of a power amplifier when a power amplifier mounted onto mobile communication equipment such as a cellular phone is comprised of the balance amplifier. One feature ... | 12/13/2011 |
| 8049565 | Multi-mode high efficiency linear power amplifier A power amplifier includes a plurality of amplification paths in which at least one amplification path is selectively enables and disabled, wherein each amplification path includes an output impedance modification element and a phase shift element that is operable i... | 11/01/2011 |
| 8022768 | Doherty amplifier and method for operation thereof An amplifier having a Doherty-type architecture and a method for operation thereof are provided. The amplifier comprises a main amplifier path comprising a main amplifier, an auxiliary amplifier path comprising an auxiliary amplifier, and an signal preparation unit ... | 09/20/2011 |
| 8022769 | Semiconductor device According to one embodiment, there is a semiconductor device including a first active element, a second active element connected in parallel with the first active element, and a first stabilization circuit connected between a gate of the first active element and a g... | 09/20/2011 |
| 8013680 | Distributed Doherty amplifiers Doherty and distributed amplifier (DA) designs are combined to achieve, wideband amplifiers with high efficiency dynamic range. A modified Doherty amplifier includes a wideband phase shifter providing first and second outputs, a main amplifier coupled to the first o... | 09/06/2011 |
| 8004365 | Amplifier circuit The invention relates to a circuit arrangement (30, 40, 70, 80, 90) of a low-noise linear input amplifier comprising a parallel circuit of a common-base circuit (20) and a common-emitter circuit (30), the emitters of two first transistors (Q3... | 08/23/2011 |
| 8004364 | High power RF solid state power amplifier system A high power, high frequency, solid state power amplifier system includes a plurality of input multiple port splitters for receiving a high-frequency input and for dividing the input into a plurality of outputs and a plurality of solid state amplifier units. Each am... | 08/23/2011 |
| 7982543 | Switchable power amplifier Embodiments of circuits, apparatuses, and systems for a switchable radio frequency (RF) power amplifier are disclosed. Some embodiments include a matching network configured to alternatively provide a first load impedance or second load impedance based at least in p... | 07/19/2011 |
| 7961048 | Integrated power amplifiers for use in wireless communication devices An integrated power amplifier can include a carrier amplifier, where the carrier amplifier is connected to a first quarter wave transformer at the input of the carrier amplifier. In addition, the power amplifier can further include at least one peaking amplifier con... | 06/14/2011 |
| 7952433 | Power amplifiers with discrete power control Systems and methods are provided for power amplifiers with discrete power control. The systems and methods may include a plurality of unit power amplifiers; a plurality of primary windings, wherein each primary winding is connected to at least one respective output ... | 05/31/2011 |
| 7944307 | Wideband RF amplifiers A device for amplifying signals over a wide frequency range features stacked amplifying modules connected between a DC voltage source and an electrical ground. The stacking configuration reuses the DC current produced the voltage source, and thus reduces the amount ... | 05/17/2011 |
| 7944308 | Amplifier circuit and the controlling method thereof An amplifier circuit includes a first unit and a second unit. The first unit has a first amplifying unit, wherein the first amplifying unit provides a first main circuit unit and a first assistant circuit unit, and the first assistant circuit unit is configured for ... | 05/17/2011 |
| 7936218 | Shared-current electronic system Shared-current electronic systems (120, 130, 140, 150, 160, 170, 180, 190, 200, 210, and 220) include two or more electronic devices, such as an electronic device (Q1), a baseband processor (110), and a multiplier/up-converter (112... | 05/03/2011 |
| 7932781 | Multi-planar solid state amplifier A solid state power amplifier (SSPA) system may include a radio frequency (RF) input, an RF waveguide split block, multiple monolithic microwave integrated circuit (MMIC) power amplifier modules, and/or a heat spreader. The power amplifier modules and RF waveguide m... | 04/26/2011 |
| 7928803 | Amplifying circuit An amplifying circuit includes amplifying unit comprising a first transistor unit having a gate width that is controllable and is controlled based on a first control signal. ... | 04/19/2011 |
| 7915959 | Multi-path, multi-oxide-thickness amplifier circuit An embodiment of a multi-path, multi-oxide-thickness amplifier circuit includes a first amplifier having at least one thin-oxide output transistor, and a second amplifier having at least one thick-oxide output transistor. The first and second amplifiers are connecte... | 03/29/2011 |
| 7915960 | Multi-primary distributed active transformer amplifier power supply and control An integrated power combiner is disclosed. The power combiner includes a first circular geometry primary winding having one or more inductive elements, such as an active winding with one or more driver stages. A circular geometry secondary winding is disposed adjace... | 03/29/2011 |
| 7902923 | Common-gate common-source amplifier Techniques for integrating a common-source and common-gate amplifier topology in a single amplifier design. In one aspect, an input voltage is provided to both a common-source amplifier and a common-gate amplifier. The output voltages of the common-source amplifier ... | 03/08/2011 |
| 7898338 | High power integrated RF amplifier An integrated HF-amplifier has an input bond pad, cells displaced in a first direction, and an output bond pad. Each has a amplifier with input pad, active area, and output pad. The active area is arranged in-between the input and output pads, and the input pad, act... | 03/01/2011 |
| 7893770 | Power amplification device Provided is a power amplification device including: a DC power supply that outputs a drain voltage; a Doherty amplifier including a carrier amplifier and a peak amplifier, which are connected in parallel, and amplifies an RF signal; a voltage control circuit that ou... | 02/22/2011 |
| 7880547 | Systems and methods for power amplifiers with voltage boosting multi-primary transformers Systems and methods may be provided for a power amplifier system. The systems and methods may include a plurality of power amplifiers, where each power amplifier includes at least one output port. The systems and methods may also include a plurality of primary windi... | 02/01/2011 |
| 7880546 | Amplifier and the method thereof An amplifier amplifying an input signal and the method thereof. The amplifier comprises first and second transconductor circuits. The first transconductor circuit, coupled to the first transistor, receives the first noise voltage to generate a first noise current. T... | 02/01/2011 |
| 7876159 | Power amplifier circuit for multi-frequencies and multi-modes and method for operating the same A multi-frequency and multi-mode power amplifier is provided. The amplifier has a carrier power amplifier and a peaking power amplifier. The carrier power amplifier receives a first signal and outputs a first amplified signal, in which a first transistor size adjust... | 01/25/2011 |
| 7876160 | Multi-mode high efficiency linear power amplifier A power amplifier includes a plurality of amplification paths in which at least one amplification path is selectively enabled and disabled, wherein each amplification path includes an output impedance modification element and an output phase shift element that is op... | 01/25/2011 |
| 7847636 | Low noise amplifier for ultra wide band A low noise amplifier (LNA) for ultra wide band receives and amplifies identical RF signals in different frequency bands, and includes more than one pair of narrow band LNAs coupled in parallel, and a load circuit which increases load impedance of the entire circuit... | 12/07/2010 |
| 7843270 | Low noise amplifier circuit with noise cancellation and increased gain A low noise amplifier circuit including a front end voltage sensing and matching amplification circuit, a gain circuit and a combining circuit is disclosed. The front end voltage sensing and matching amplification circuit includes an input and two outputs and provid... | 11/30/2010 |
| 7843269 | Cascode-cascade power amplifier assembly A cascode-cascade power amplifier assembly is provided. Which includes a first common-source amplifier, a second common-source amplifier, a phase shift matching network coupled to the first common-source amplifier and the second common-source amplifier for providing... | 11/30/2010 |
| 7839216 | RF power amplifiers with linearization Designs and techniques associated with power amplifiers for amplifying RF signals to provide variable power amplification and improved linearity in various RF amplification circuits, including power amplifiers operated under the power back-off conditions. ... | 11/23/2010 |
| 7834700 | Radio frequency power amplifier A radio frequency signal is input to the bases of transistors via respective capacitors, is amplified, and is output from the collectors of the transistors. The emitter of each transistor is grounded. A bias current input from a bias circuit is supplied to the bases... | 11/16/2010 |
