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| Application No. | Application Title | Issue Date |
| 20120126890 | POWER AMPLIFIER The invention relates to improving the performance of load modulation power amplifiers through the use of coupled transmission line-based power combiners. Exemplary embodiments disclosed include a power amplifier comprising an input connected to first and second amplifi... | 05/24/2012 |
| 20120126886 | METHOD AND ARRANGEMENT IN A MOBILE COMMUNICATION SYSTEM The present invention relates to an amplifier circuit where a load modulation is applied to a segmented amplifier. This will reduce the shunt loss since the loss of a segmented amplifier is reduced by allowing each amplifier segment or combination of segments to operate... | 05/24/2012 |
| 20120126891 | POWER AMPLIFICATION APPARATUS A power amplification apparatus includes a first amplifier turned on at a preset low input power; and a second amplifier connected in parallel with the first amplifier and turned off at a low input power due to a relatively low bias current. Output capacitors of the fir... | 05/24/2012 |
| 20120105149 | POWER AMPLIFIERS Various aspects of the disclosure provide high power and high efficiency power amplifier systems that can be integrated on a chip using integrated circuit processes such as a standard CMOS and SiGe process. A power amplifier system is disclosed according to one aspect. ... | 05/03/2012 |
| 20120044606 | ESD PROTECTION OF AN RF PA SEMICONDUCTOR DIE USING A PA CONTROLLER SEMICONDUCTOR DIE A power amplifier (PA) controller semiconductor die and a first radio frequency (RF) PA semiconductor die are disclosed. The PA controller semiconductor die includes a first electro-static discharge (ESD) protection circuit, which ESD protects and provides a first ESD p... | 02/23/2012 |
| 20120032738 | POWER AMPLIFIER An efficient power amplifier with a design which, even in cases when the phase characteristics of high frequency devices used in a main amp and peaking amp differ, reduces the combination loss of the two amps at a wide range of output levels. A class AB power amplifier ... | 02/09/2012 |
| 20120032737 | ON-CHIP MILLIMETER WAVE LANGE COUPLER A Lange coupler having a first plurality of lines on a first level and a second plurality of lines on a second level. At least one line on the first level is cross-coupled to a respective line on the second level via electromagnetic waves traveling through the first and... | 02/09/2012 |
| 20120025915 | DOHERTY AMPLIFIER A Doherty amplifier includes: an input distributor; a coupler; a plurality of Doherty circuit connected between the input distributor and the coupler; wherein each of Doherty circuits has a carrier amplifier, a peaking amplifier, a distributor distributing a input signa... | 02/02/2012 |
| 20120021697 | RADIO FREQUENCY SIGNAL PROCESSING CIRCUIT AND QUADRATURE POWER AMPLIFIER A quadrature power amplifier capable of operating in a single-output mode and a multiple-output mode. When operating in the single-output mode, a first quadrature coupler receives a first input signal, and splits and phase-shifts the first input signal into two first sp... | 01/26/2012 |
| 20120013400 | Current Control Circuit, Class AB Operational Amplifier System and Current Control Method A current control circuit for controlling a bias current of a class AB operational amplifier includes: a low current source, for generating a low bias current; a high current source, for generating a high bias current, which is greater than the low bias current; and a c... | 01/19/2012 |
| 20120013405 | RF DETECTOR WITH CREST FACTOR MEASUREMENT An RF detector configured to provide two outputs, one being a function of the true RMS power level of an RF input signal, and the other being a function of the instantaneous/peak power of the RF input signal, normalized to the average power level. The RF detector includ... | 01/19/2012 |
| 20120007671 | APPARATUS FOR AUTOMATICALLY SEPARATING AND DETECTING NOISE RADIO WAVES An output signal SHS is secondarily amplified by a high-frequency amplifier AMP3 and an output signal SHR is secondarily amplified by an AMP4 for which high-frequency side amplitude reducing means is taken. In this case, the AMP4 has small gain of a... | 01/12/2012 |
| 20110298537 | VOLTAGE DISTRIBUTION FOR CONTROLLING CMOS RF SWITCH Disclosed are voltage distribution device and method for controlling CMOS-based devices for switching radio frequency (RF) signals. In certain RF devices such as mobile phones, providing different amplification modes can yield performance advantages. For example, a capa... | 12/08/2011 |
| 20110291754 | 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 amplifier s... | 12/01/2011 |
| 20110285460 | HIGH FREQUENCY AMPLIFIER, WIRELESS DEVICE, AND CONTROL METHOD Provided is a high frequency amplifier that can suppress from increasing the circuit size while improving efficiency at the time of low output. A high frequency amplifier according to one aspect of the present invention includes a carrier amplifier 7 that amplifi... | 11/24/2011 |
| 20110279178 | Multi-band high-efficiency doherty amplifer The present invention relates to a Multi-Band Doherty amplifier. Embodiments of the present invention provide an amplifying structure including a main amplifier configured to amplify a first signal, a peak amplifier configured to amplify a second signal, a tunable imped... | 11/17/2011 |
| 20110260797 | 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 port... | 10/27/2011 |
| 20110255228 | BALANCE SIGNAL OUTPUT TYPE SENSOR There is provided a balance signal output type sensor producing a high quality balance signal output. There is provided a balance signal output type sensor including a capacitor unit having a first electrode serving as a movable electrode and a second electrode disposed... | 10/20/2011 |
| 20110241774 | Versatile Audio Power Amplifier An audio power amplifier includes a first and a second amplification unit, each including a switching voltage amplifier, an output filter, a current compensator, an inner current feedback loop feeding a measurement of current measured at the output inductor back to a su... | 10/06/2011 |
| 20110241773 | Multi-Channel Radio Frequency Generator A multi-channel radio frequency (RF) generator module includes N power amplifiers, M drivers, a power supply module, and a control module. The N power amplifiers generate N RF outputs, respectively. The M drivers drive the N power amplifiers based on M driver control si... | 10/06/2011 |
| 20110215865 | POWER AMPLIFIER Disclosed herein is a power amplifier. The power amplifier includes N power amplification means, a transformer, and a harmonic elimination unit. Each of the N power amplification means amplifies an input signal into a predetermined level. The transformer includes N/2 pr... | 09/08/2011 |
| 20110215866 | ASYMMETRIC MULTILEVEL OUTPHASING ARCHITECTURE FOR RF AMPLIFIERS A radio frequency (RF) circuit includes a power supply configured to generate a plurality of voltages, a plurality of power amplifiers, each having an RF output port and a power supply input port, a switch network having a plurality of input ports coupled to the power s... | 09/08/2011 |
| 20110216818 | VARIABLE DUTY CYCLE GENERATION FOR OUT-PHASING AND PWM POWER AMPLIFIERS Power reduction in transmitters is very important. One method to realize reduction is to make use of switching power amplifiers (PA) that have a better efficiency. Switching PA concepts are only possible in combination with suitable modulation methods like pulse width m... | 09/08/2011 |
| 20110210786 | Doherty Amplifier with Input Network Optimized for MMIC In a Doherty amplifier (100), the amplifier's input is connected to a main device (102) via a first branch and to a peak device via a second branch. The first branch has a first frequency-dependent input impedance with a first real part and a first imagina... | 09/01/2011 |
| 20110204973 | AMPLIFYING DEVICE AND SIGNAL PROCESSING METHOD BASED ON AMPLIFYING DEVICE An amplifying device and a signal processing method based on an amplifying device are provided, capable of reducing performance requirements of modules and reducing design difficulty of the modules. The amplifying device includes at least one amplifying module, includin... | 08/25/2011 |
| 20110204974 | APPARATUS FOR IMPROVING PERFORMANCE AT LOW POWER REGION IN A DOHERTY AMPLIFIER A method and apparatus improve the performance of a carrier amplifier in a Doherty amplifier. The Doherty amplifier includes a power divider, a carrier amplifier, at least one peaking amplifier, offset lines, and a Doherty circuit. The power divider provides a power sig... | 08/25/2011 |
| 20110199156 | POWER AMPLIFIER AND AMPLIFICATION METHOD THEREOF A power amplifier according to the present invention includes: a carrier amplifier (2) that amplifies a carrier of a high-frequency input signal; a peak amplifier (3) that amplifies a peak component of the high-frequency input signal; an average power leve... | 08/18/2011 |
| 20110193627 | Method and Amplifier for Cancelling Magnetic Coupling A method for cancelling magnetic coupling in an amplifier is disclosed. The amplifier includes a first path and a second path for outputting a first signal and a second signal, respectively, and the first signal and the second signal have a specific phase difference. Th... | 08/11/2011 |
| 20110193624 | TUNABLE IMPEDANCE INVERTER FOR DOHERTY AMPLIFIER CIRCUIT A tunable impedance inverter is presented for a Doherty amplifier circuit having first and second amplifiers connected in parallel between an input circuit for receiving an input signal and an output circuit for supplying an output signal to a load. An impedance inverte... | 08/11/2011 |
| 20110193626 | FREQUENCY RESPONSE COMPENSATION AMPLIFIER ARRANGEMENTS An embodiment of the present invention provides a system comprising a summing device and first amplifier portion. The summing device is coupled to an output node. The first amplifier portion is coupled between an input node and the summing device. The first amplifier po... | 08/11/2011 |
| 20110193625 | Amplifier for Cable and Terrestrial Applications with Independent Stage Frequency Tilt A system comprises a first amplifier stage including a first amplifier, a second amplifier stage including second and third amplifiers, and a fourth amplifier. The first amplifier stage includes an input and an output. The second amplifier stage is coupled between the o... | 08/11/2011 |
| 20110187451 | POWER AMPLIFIER There is provided a power amplifier that can reduce power consumption by selectively turning a plurality of amplifiers on or off according to the power of a signal to be transmitted. A power amplifier according to an aspect of the invention may include: a first amplific... | 08/04/2011 |
| 20110181353 | TWO-CHANNEL OPERATIONAL AMPLIFIER CIRCUIT A two-channel operational amplifier circuit includes a first operational amplifier and a second operational amplifier. In a first frame period, the two-channel operational amplifier circuit switches a first input stage, a first gain stage and a first output stage to wor... | 07/28/2011 |
| 20110175677 | DISTRIBUTED DOHERTY POWER AMPLIFIER Provided is a distributed Doherty power amplifier exhibiting high efficiency and linearity at a wide range of bandwidths, the distributed Doherty power amplifier including a first amplifier; a second amplifier, which is connected to the first amplifier in parallel; a fi... | 07/21/2011 |
| 20110156813 | POWER AMPLIFIER There is provided a power amplifier that can maintain a constant gain by detecting a level of a signal being input and a level of a signal being output. A power amplifier according to an aspect of the invention may include: an amplification section having at least one a... | 06/30/2011 |
| 20110156812 | MULTI-BAND, MULTI-MODE RF TRANSMIT AMPLIFIER SYSTEM WITH SEPARATE SIGNAL PATHS FOR LINEAR AND SATURATED OPERATION A device includes: an input for receiving an RF input signal having a signal format selected among a plurality of signal formats, including at least one signal format to be linearly amplified, and at least another signal format be amplified in saturation; at least a fir... | 06/30/2011 |
| 20110148518 | DYNAMIC RANGE IMPROVEMENTS OF LOAD MODULATED AMPLIFIERS The present invention relates to methods and devices to control and operate the functionality of a power amplifier system (100) capable of operating in at least three differential amplification modes. The drive signal's amplitude envelope controls an integrated s... | 06/23/2011 |
| 20110140775 | COMBINED CELL DOHERTY POWER AMPLIFICATION APPARATUS AND METHOD A Doherty power amplification apparatus and method using a combined cell are provided. The Doherty power amplification apparatus includes, a power splitter for splitting an input power, and outputting the split powers to a carrier amplification unit and (N−1) peaking ... | 06/16/2011 |
| 20110140783 | DOHERTY AMPLIFIER WITH COMPOSED TRANSFER CHARACTERISTIC HAVING MULTIPLE PEAK AMPLIFIERS A combination amplifier (1,1a) is provided which comprises a carrier amplifier (7,7a) and a series connection of a first peak amplifier (9,9a) and a second peak amplifier (11,11a) which are provided with a phase-sh... | 06/16/2011 |
| 20110140774 | ONE-SIDED SWITCHING PULSE WIDTH MODULATION AMPLIFIERS One-sided pulse width modulated (PWM) amplifiers are disclosed. An example amplifier includes an integrator to receive first and second analog signals, and to output a first amplified signal and a second amplified signal based on the first and second analog signals, a r... | 06/16/2011 |
