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| Number | Title | Issue Date |
| 8183933 | High-voltage impulse amplifier A circuit includes a first transistor in a common-collector configuration and a heterojunction bipolar transistor (HBT) in a common-emitter configuration. The first transistor has a base coupled to an input node for receiving a pulsed signal. A collector of the firs... | 05/22/2012 |
| 8138839 | Wideband CMOS gain stage A CMOS gain stage includes biasing circuitry configured to insure saturation of a subsequent stage without a source follower circuit. The CMOS gain stage is optionally powered by a supply voltage that is greater than a permitted supply voltage for a processes techno... | 03/20/2012 |
| 8120428 | Apparatus and method for low noise amplification Apparatus and methods are disclosed, such as those involving a low noise amplifier. One such apparatus includes a low noise amplifier circuit configured to receive a signal at an input node and to output an amplified signal at an output node. The low noise amplifier... | 02/21/2012 |
| 8081033 | Variable gain amplifier and high-frequency signal receiving apparatus comprising the same A cascode amplification unit includes a plurality of cascode amplifiers connected in parallel. Each of the cascode amplifiers has two transistors. A cascode current source unit includes a plurality of cascode current sources connected in parallel. Each of the cascod... | 12/20/2011 |
| 8063706 | Cascode CMOS RF power amplifier with programmable feedback cascode bias under multiple supply voltages A Radio Frequency (RF) cascode power amplifier operates with differing battery supply voltages. A transconductance stage has a transistor with an RF signal input at its gate. A cascode stage has at least one cascode transistor, the cascode stage coupled in series wi... | 11/22/2011 |
| 8040188 | Low noise cascode amplifier The present invention relates to a low noise cascode amplifier comprising a first transistor, a second transistor, a third transistor, a first inductor, and a second inductor. Furthermore, the first transistor can connect with the second transistor via the first ind... | 10/18/2011 |
| 8031005 | Amplifier supporting multiple gain modes Techniques for designing a low-noise amplifier (LNA) for operation over a wide range of input power levels. In an exemplary embodiment, a first gain path is provided in parallel with a second gain path. The first gain path includes a differential cascode amplifier w... | 10/04/2011 |
| 8031006 | Method and apparatus for an LNA with high linearity and improved gain control A low noise amplifier includes an input stage. The input stage includes a first device configured to receive an input signal. A second device is connected to the first device. The second device has a predetermined input impedance. The input stage is configured so th... | 10/04/2011 |
| 8022772 | Cascode amplifier with protection circuitry A cascode amplifier with protection circuitry is described. In one exemplary design, the amplifier includes multiple branches coupled in parallel, with at least one branch being switchable between “on” and “off” states. Each switchable branch includes a gain... | 09/20/2011 |
| 8018288 | High-linearity low noise amplifier Embodiments of a high-linearity low-noise amplifier (LNA) are generally described herein. Other embodiments may be described and claimed. In some embodiments, an RF input signal may be amplified with a cascode amplifier. The cascode amplifier may include integrated ... | 09/13/2011 |
| 8008977 | Field-plated transistor including feedback resistor Embodiments include but are not limited to apparatuses and systems including a unit cell having a source electrode, a gate electrode to receive an input radio frequency (RF) signal, and a drain electrode to output an amplified RF signal. A field plate may be coupled... | 08/30/2011 |
| 7969246 | Systems and methods for positive and negative feedback of cascode transistors for a power amplifier Systems and methods are provided for positive and negative feedback of cascode transistors for a power amplifier. The systems and methods may include a first cascode stage comprising a first common-source device and a first common-gate device; a second cascode stage... | 06/28/2011 |
| 7944311 | Feedback biasing for cascode amplifiers A system for a power transmitter may be provided. The system may include a first amplifier stage having at least a first transistor and a second transistor that are connected in a first cascode configuration; a second amplifier stage having at least a third transist... | 05/17/2011 |
| 7940126 | Signal amplification apparatus with advanced linearization Provided is a signal amplification apparatus with advanced linearization, the signal amplification apparatus including: a driving unit having a structure of a cascode amplifier including a first active element and a second active element and outputting an amplificat... | 05/10/2011 |
| 7940125 | Power amplifier, power amplifier circuit and power amplifying method The present invention discloses a power amplifier, comprising: a first transistor having a gate receiving an input signal; a second transistor coupled to the first transistor in a cascode configuration, in which a source of the second transistor is coupled to a drai... | 05/10/2011 |
| 7936220 | Techniques for improving amplifier linearity Techniques for improving the linearity of a cascode amplifier. In an exemplary embodiment, an auxiliary common-gate amplifier is provided in parallel with the principal cascode branch. The auxiliary common-gate amplifier samples a cascoded node in the principal casc... | 05/03/2011 |
| 7911280 | Amplifier stage An amplifier stage for generating an amplified output signal from an input signal, a mobile device comprising an audio amplifier, and an amplification method for generating an amplified output signal from an input signal using an amplifier stage are described. ... | 03/22/2011 |
| 7911279 | Amplifier with bias circuit providing improved linearity An amplifying device includes a cascode amplifier and a biasing circuit. The cascode amplifier is configured to receive an input signal and to output an amplified output signal corresponding to the input signal. The biasing circuit is configured to bias the cascode ... | 03/22/2011 |
| 7902925 | Amplifier with active post-distortion linearization An amplifier, which has good linearity and noise performance, includes first, second, third, and fourth transistors and an inductor. The first and second transistors are coupled as a first cascode pair, and the third and fourth transistors are coupled as a second ca... | 03/08/2011 |
| 7855605 | Amplifier circuit An amplifier circuit includes three amplifier units connected in series. The first amplifier unit includes an input connector for inputting signals and a first transistor amplifier module connected to the input connector. The second amplifier unit includes a notch-f... | 12/21/2010 |
| 7847638 | Cascoded circuit A cascoded current-mirror circuit includes a first N channel MOS transistor, a second N channel MOS transistor, a third N channel MOS transistor and a fourth N channel MOS transistor. The first N channel MOS transistor and the second N channel MOS transistor are cas... | 12/07/2010 |
| 7821342 | Device comprising a feedback-less gain controlled amplifier Devices (1,2) comprising feedback-less amplifiers (16,19,26,29) that are gain controlled introduce linear relationships between output signals and input signals of the feedback-less amplifiers (16,19,26,29) by providing the feedback-less amplifi... | 10/26/2010 |
| 7816992 | Offset voltage correction circuit and class D amplifier An offset voltage correction circuit for a differential amplifier comprising NMOS transistors serving as a pair of differential transistors, and PMOS transistors serving as a pair of load transistors connected between outputs of the pair of differential transistors ... | 10/19/2010 |
| 7812676 | Low voltage input stage A transconductance input apparatus energized by supply voltage has an input for receiving an input signal, and an output for delivering an output signal. The apparatus also has a plurality of transconductance stages for converting the input signal into the output si... | 10/12/2010 |
| 7800450 | Re-configurable low noise amplifier utilizing feedback capacitors A re-configurable low noise amplifier utilizing feedback capacitors is disclosed. The low noise amplifier has output transistors, capacitor switch cells, and capacitance distributors all in an output portion. The output transistors are for controlling selection of a... | 09/21/2010 |
| 7795981 | Low noise amplifier The invention teaches an amplifier (100) with an input signal (IN) coupled to the gate of a second transistor (Q2) and an output signal (OUT) coupled to an output node between a third resistor (R3) and the drain of the second transistor (Q2 | 09/14/2010 |
| 7786806 | Tunable cascode LNA with flat gain response over a wide frequency range A cascode LNA circuit is provided with a tuned inductive load. The circuit shows a flat response over a wide frequency range. ... | 08/31/2010 |
| 7786807 | Cascode CMOS RF power amplifier with programmable feedback cascode bias under multiple supply voltages A Radio Frequency (RF) cascode power amplifier operates with differing battery supply voltages. A transconductance stage has a transistor with an RF signal input at its gate. A cascode stage has at least one cascode transistor, the cascode stage coupled in series wi... | 08/31/2010 |
| 7760029 | High-bandwidth high-gain amplifier A pipelined analog to digital converter includes a first stage that receives an input voltage, that generates a first sampled digital value and a first residue voltage, and that includes a first amplifier that amplifies the first residue voltage and generates a firs... | 07/20/2010 |
| 7755435 | Wideband low noise amplifiers A wideband low noise amplifier. The wideband low noise amplifier comprises an amplifier, an output device, and an inductor. The amplifier amplifies an input signal received from an input node, and outputs the amplified signal to an output node. The output device is ... | 07/13/2010 |
| 7737790 | Cascode amplifier and method for controlling current of cascode amplifier A cascode amplifier includes a first transistor, a second transistor, a third transistor, a fourth transistor and a bias circuit. Each of the transistors has a gate electrode, a first electrode and a second electrode, a first electrode of the first transistor is cou... | 06/15/2010 |
| 7737788 | Cascode gain boosting system and method for a transmitter A communication device includes a first polarity driver circuit including a first current source, a first amplifier that receives an input signal, that controls the first current source, and that receives a signal from the first current source, a first cascode devic... | 06/15/2010 |
| 7737789 | Broadband active balun A broadband active balun configuration is provided. According to embodiments, the subject active balun can include a cascade and cascade transistor pair using a shared input transistor. In a further implementation, a low-pass bias-feedback mechanism for maintaining ... | 06/15/2010 |
| 7714664 | Cascode circuit A cascode circuit for a high-gain or high-output millimeter-wave device that operates with stability. The cascode circuit including two cascode-connected transistors includes: a first high electron mobility transistor (HEMT) including a source that is grounded; a se... | 05/11/2010 |
| 7696828 | Multi-linearity mode LNA having a deboost current path A modified derivative superposition (MDS) low noise amplifier (LNA) includes a main current path and a cancel current path. Third-order distortion in the cancel path is used to cancel third-order distortion in the main path. In one novel aspect, there is a separate ... | 04/13/2010 |
| 7683720 | Folded-cascode amplifier with adjustable continuous time equalizer A system and method are provided for a folded cascode amplifier circuit that includes a first order high-pass filter coupled to a first bias voltage, a first input signal and a second input signal, the first input signal and the second input signal defining a differ... | 03/23/2010 |
| 7679452 | Amplifier arrangement and method An amplifier arrangement having a transistor arrangement comprising a first transistor (1) in common-emitter configuration and a second transistor (2) in common-base configuration. A switching device (7) couples, in a first mode of operation, th... | 03/16/2010 |
| 7652539 | Multi-stage broadband amplifiers Provided herein are multi-stage broadband amplifier configured to achieve a high gain-bandwidth product in a non-distributed architecture and methods for designing the same. The broadband amplifier can include an input stage having a broadband matching unit and an i... | 01/26/2010 |
| 7646252 | Amplifier for use in radio-frequency band A cascade-connected transistor includes a common-source transistor which receives an input signal, and a common-gate transistor which is connected to a drain terminal of the common-source transistor and outputs an output signal. A band-pass filter receives the outpu... | 01/12/2010 |
| 7639085 | Automatic gain control circuit A first MOS transistor (M1) and a second MOS transistor (M2) constitute a cascode amplifier. The second MOS transistor (M2) is in a differential connection with a gain control MOS transistor (M4), which has its gate supplied with an AGC c... | 12/29/2009 |
