Quotables
"To place a man in a multi-stage rocket and project him into the controlling gravitational field of the moon where the passengers can make scientific observations, perhaps land alive, and then return to earth--all that constitutes a wild dream worthy of Jules Verne. I am bold enough to say that such a man-made voyage will never occur regardless of all future advances."
Lee deForest, American radio pioneer ; 1957
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| Number | Title | Issue Date |
| 8154340 | Metamaterial power amplifier systems Power amplifying systems and modules and components therein are designed based on CRLH structures, providing high efficiency and linearity. ... | 04/10/2012 |
| 8013673 | Radio frequency power amplifier An RF power amplifier according to an implementation of the present invention includes: a first power amplifier which linearly amplifies a first RF signal of a first frequency band; a second power amplifier which linearly amplifies a second RF signal of a second fre... | 09/06/2011 |
| 7884669 | Broadband amplifying device The present invention relates to an amplification device for a satellite in order to amplify a plurality of n transmission channels to an output corresponding to a beam, the device comprising: frequency band combining means compris... | 02/08/2011 |
| 7679438 | High frequency circuit, semiconductor device, and high frequency power amplification device A small, high performance, multifunctional high frequency circuit that is multiband and multimode compatible reduces loss from a switch formed on the output side of a final stage amplification unit. The final stage amplification unit power amplifies an input signal ... | 03/16/2010 |
| 7656228 | Matching circuit and multi-band amplifier A matching circuit includes a demultiplexer for demultiplexing a signal outputted from an amplification device into signals of respective frequency bands, and at least two matching blocks which are connected to the demultiplexer, are respectively fed with the signal... | 02/02/2010 |
| 7622989 | Multi-band, inductor re-use low noise amplifier Described herein are multi-band LNAs that reuse inductors for different frequency bands to minimize chip area. In an embodiment, a multi-band LNA is capable of operating in a narrowband (NB) and a wideband (WB) while reusing at least one input impedance matching ind... | 11/24/2009 |
| 7570111 | Apparatus and method for wideband amplification of RF signals The present invention is directed to an apparatus and method for wideband amplification of RF signals. A wideband amplification apparatus in accordance with the present invention may comprise: (a) a high-band amplifier; (b) a low-band amplifier; (c) a quadrature hyb... | 08/04/2009 |
| 7548111 | Miniature dual band power amplifier with reserved pins A radio frequency (RF) module provides first and second power amplifiers configured to produce first and second amplified RF signals at first and second output RF terminals, respectively; and first and second arrays of pads positioned opposite each other, the first ... | 06/16/2009 |
| 7528652 | Amplifying device and radio communication circuit There is provided with an amplifying device including: an input terminal configured to input an input signal; first to ith blocks including first to ith resonators having different first to ith resonance frequencies and first to ith amplifiers that amplify signals w... | 05/05/2009 |
| 7508261 | Systems of miniaturized compatible radio frequency wireless devices A system of compatible modules includes a radio frequency (RF) module with a power amplifier configured to produce an amplified RF signal at an output RF terminal; and a first row of pads and a first column of pads intersecting at a corner pad of the module, and whe... | 03/24/2009 |
| 7446604 | Multi-band low noise amplifier A multi-band low noise amplifier capable of operating in a plurality of band modes includes a plurality of input amplifiers respectively corresponding to the plurality of band modes and a single output amplifier. Each input amplifier includes a receiving port for re... | 11/04/2008 |
| 7415251 | Apparatus and method for improving efficiency of a power amplifier having a high peak-to-average power ratio A power amplification apparatus and method for amplifying a baseband signal having a high peak-to-average power ratio (PAR) are provided. The power amplification apparatus and method comprise a signal generation section for generating a peak-reduced signal obtained ... | 08/19/2008 |
| 7388959 | Harmonic generator and pre-amp A Harmonic Generator for audio applications and a Pre-Amplifier circuit are combined to form a Harmonic Generator and Pre-Amplifier circuit. The Harmonic Generator is formed from a Buffer Circuit responsive to an input program signal for buffering the input program ... | 06/17/2008 |
| 7382185 | Loop segment switching system The loop segment switching system includes a plurality of signal sources, each producing an output signal; and, a plurality of signal sinks, each signal sink normally accepting an output signal from an associated signal source and for increasing the power of the out... | 06/03/2008 |
| 7379751 | Multi-band transceiver and radio communication device using the transceiver A multi-band transceiver has a function of sharing transmitted and received signals of multiple frequency bands by the same antenna. The multi-band transceiver mounts multiple filters that correspond to the multiple frequency bands and multiple amplifiers for amplif... | 05/27/2008 |
| 7362171 | High-frequency amplifier It is an object of this invention to provide a high-frequency amplifier which can efficiently amplify an input signal in a plurality of different frequency bands in a simple configuration. The high-frequency amplifier is configured such that an RF signal having n fr... | 04/22/2008 |
| 7362183 | Amplifier circuit improved in linearity and frequency band An amplifier circuit improved in linearity and frequency band comprises an amplification block, a feedback block and an output block. The amplification block comprises a main transistor, an auxiliary transistor, a first capacitor, a second capacitor, a main transist... | 04/22/2008 |
| 7348856 | Semiconductor device Power amplifier circuits which constitute an RF power module used for a digital device capable of handling high frequency signals in two frequency bands are disposed over the same IC chip. The power amplifier circuits are disposed around the IC chip, and a secondary... | 03/25/2008 |
| 7330704 | Electrical signal pre-conditioning A method and circuitry for pre-conditioning an electrical signal. The method comprises limiting the strength of the signal to not exceed a limit signal strength corresponding to the onset of substantial non-linear response of an amplifier to which the limited signal... | 02/12/2008 |
| 7323930 | Amplifiers with compensation An amplifier circuit comprises a first amplifier having an input and an output. A second amplifier has an input that communicates with an output of the first amplifier. A third amplifier has an input that communicates with an input of the first amplifier. A fourth a... | 01/29/2008 |
| 7321661 | Current feedback system for improving crossover frequency response A loudspeaker is provided for receiving an incoming electrical signal and transmitting an acoustical signal. The loudspeaker may include a power amplifier that has an input and an output, where the input receives the incoming electrical signal. The loudspeaker may a... | 01/22/2008 |
| 7319849 | Radio-frequency tuner with differential converter A system for tuning a radio-frequency signal includes a first input path, a second input path, a common reference generator, a selector, a mixer, and a filter. The first input path and the second input path propagate a first single-ended input signal and a second si... | 01/15/2008 |
| 7315730 | Architecture for a receiver front end having dual output low noise amplifier driving separate pre-selectors coupled to a transformer for single ended output An architecture for a receiver front end utilizes a dual output low noise amplifier (102) driving separate, fixed preselectors (104, 106) coupled to a transformer (108) to generate a single ended output (113). A pair of blocks coupled in ... | 01/01/2008 |
| 7304550 | Wideband attenuator circuits and methods Embodiments of the present invention include wideband attenuator circuits and methods. In one embodiment the present invention includes a first divider circuit coupled in series with two or more second divider circuits. The divider circuits include resistance and ca... | 12/04/2007 |
| 7298206 | Multi-band amplifier for test and measurement instruments A multiband amplifier for a test and measurement instrument includes a splitter to split an input signal into split signals, amplifiers, and means for combining and digitizing the amplified signals into a digitized signal. Each amplifier is configured to amplify an ... | 11/20/2007 |
| 7295070 | Flip around switched capacitor amplifier A flip around amplifier circuit is provided that includes an amplifier having first and second amplification stages, a Miller capacitor, and a resistive element in series with the Miller capacitor, where an output line of the second amplification stage can be couple... | 11/13/2007 |
| 7282991 | On-chip amplifier/line driver compensation circuit An embodiment of the present invention includes an amplifier on an integrated circuit, with the amplifier having positive and negative inputs, and positive and negative outputs. A first feedback capacitor is on the integrated circuit between the positive input and t... | 10/16/2007 |
| 7274795 | System for and method of audio signal processing for presentation in a high-noise environment The present invention relates to novel systems, methods, and circuits useful for achieving quality sound presentation in high-noise environments. Specifically, the present invention provides systems, methods, and circuits for processing audio signals. The present in... | 09/25/2007 |
| 7248118 | Radio frequency power amplifier module A radio frequency power amplifier module that brings sufficient attenuation to a radio frequency signal in a bias supply line connecting a bias control part and a radio frequency power amplifier part without increasing module substrate area is aimed. At least one bo... | 07/24/2007 |
| 7221220 | Method and apparatus for low-frequency bypass in broadband RF circuitry A method of processing an input broadband signal in RF circuitry includes extracting low-frequency components from the input broadband signal, processing the low-frequency components in low-frequency bypass circuitry, and adding the processed low-frequency component... | 05/22/2007 |
| 7215205 | Power amplifier arrangement and method for processing a radiofrequency signal A power amplifier arrangement comprises a power amplifier in a semiconductor body. At least one first input terminal on the surface of the semiconductor body is provided for feeding in a signal to be amplified. A first output tap of the arrangement is designed for o... | 05/08/2007 |
| 7212796 | Antenna unit and receiving circuit An antenna unit includes an antenna, a high-frequency amplifier, an attenuator circuit, an output cable, and a voltage detector circuit. An operating voltage is supplied from a receiver to the high-frequency amplifier through the output cable. The operating voltage ... | 05/01/2007 |
| 7206366 | System and method for programmably adjusting gain and frequency response in a 10-GigaBit ethernet/fibre channel system Aspects of the invention may provide a method and system for adjusting a gain and/or a frequency response of an input signal for a multimode PHY device. A signal divider may apportion the input signal into a gain adjustment signal and/or an equalization adjustment s... | 04/17/2007 |
| 7202735 | Multi-band power amplifier module for wireless communication devices A multi-band power amplifier module includes a first power amplifier that amplifies a first input radio frequency signal in a first frequency band in response to a first bias control signal. A second power amplifier amplifies a second input radio frequency signal in... | 04/10/2007 |
| 7202746 | Multiple-stage operational amplifier and methods and systems utilizing the same A multiple-stage operational amplifier including a gain stage for amplifying an input signal and implementing a dominant pole producing a frequency response having a gain roll-off with frequency and a unity gain frequency. An intermediate stage is coupled to an outp... | 04/10/2007 |
| 7202734 | Electronically tuned power amplifier A circuit and method for electronically tuning an RF power amplifier. The output filter includes at least one electronically variable reactance. The electronically tuned power amplifier may be tuned rapidly to a selected frequency, to a selected impedance, or to pro... | 04/10/2007 |
| 7202733 | Transconductance amplifiers with compensation An amplifier circuit comprises a first operational transconductance amplifier (OTA) has an input that communicates with the output of the first amplifier. A third amplifier has an input that communicates with the input of the first amplifier and an output. A fourth ... | 04/10/2007 |
| 7199656 | Amplifiers with compensation An amplifier circuit includes a first amplifier module that includes an input and an output and that has first gain, a first bandwidth and a first output impedance. A second amplifier module includes an input that communicates with the input of the first amplifier m... | 04/03/2007 |
| 7197086 | Wide-bandwidth, high-dynamic-range linear amplifier for a CDMA transmitter in a wireless base station A CDMA base station transmitter employing the Kahn envelope-elimination-and-restoration technique includes a switching amplifier adapted to linearly amplify the low-level baseband signal derived from the digital amplitude information portion of the digital CDMA sign... | 03/27/2007 |
| 7190290 | Method and apparatus for addressing receive band noise problems associated with the use of a digital power amplifier An apparatus and method for biasing at least one transistor of a Radio Frequency Digital to Analog Converter (RFDAC). The apparatus including a direct base current injection circuit for injecting a DC current waveform directly into a base terminal of the transistor.... | 03/13/2007 |
