Quotables
"I watched his countenance closely, to see if he was not deranged ... and I was assured by other senators after he left the room that they had no confidence in it."
U.S. Senator Smith of Indiana ; After seeing Samuel Morse demonstrate the telegraph.
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| Number | Title | Issue Date |
| 8188807 | Attenuation element The invention relates to an attenuation element. According to the invention, this attenuation element has two rail pieces (46, 48) and two conducting pieces (50, 52), wherein a rail piece (46, 48) and a conducting piece (50, 52) each are ... | 05/29/2012 |
| 8179205 | Linearization systems and methods for variable attenuators Systems and methods for provided for linearization systems and methods for variable attenuators. The variable attenuators can include series transistors along a main signal path from the input to output, as well as shunt transistors. A bootstrapping body bias circui... | 05/15/2012 |
| 8143969 | Multiple tap attenuator microchip device A multiple tap attenuator microchip device is disclosed. The device includes a substrate having two or more attenuator taps formed on a surface of the substrate. One or more ground contacts are also formed on the substrate surface and operatively connected to the at... | 03/27/2012 |
| 8138851 | High bandwidth programmable transmission line equalizer A transmission line equalizer includes multiple signal paths connected in parallel between an equalizer input signal and an output amplifier where each signal path has a network implementing a specific frequency dependent response and each signal path implements cur... | 03/20/2012 |
| 8130056 | Thermometer coded attenuator Techniques are disclosed that allow for programmable attenuation using thermometer code steps. By thermometer coding the attenuator structure, monotonicity is guaranteed or otherwise greatly improved, which eliminates instability problems with automatic gain control... | 03/06/2012 |
| 8076995 | Integrated digitally controlled linear-in-decibels attenuator An integrated digitally controlled linear-in-decibels attenuator circuit in which one or more sets of selection switches establish a desired attenuation by selectively connecting the input signal electrode to one or more corresponding resistive ladder networks conne... | 12/13/2011 |
| 8031031 | Attenuator An attenuator includes a T-type two terminal pair network including first and second terminals, first, second and third circuits, wherein the first terminal receives an input signal to be attenuated, wherein the first circuit is connected between the first and secon... | 10/04/2011 |
| 8022785 | Step attenuator circuit with improved insertion loss A step attenuator circuit is mounted on a printed circuit board and has a highpass filter network passing high frequency signals and a lowpass filter network passing low frequency signals. The lowpass network presents a high shunt reactance to the high frequency sig... | 09/20/2011 |
| 7999631 | Anti-parallel PI PIN attenuator structure with improved CSO performance An RF attenuator circuit includes an anti-parallel PI structure having an input shunt arm comprising a single PIN diode, and an output shunt arm comprising a single PIN diode configured to have opposite polarity of the PIN diode of the input shunt arm. ... | 08/16/2011 |
| 7990230 | Temperature compensation attenuator A temperature compensation attenuator formed from a base, a serial film thermistor having two ends, a parallel film resistor, an input terminal, and an output terminal. The serial film thermistor and the parallel film resistor are disposed on the base, the input ter... | 08/02/2011 |
| 7986197 | Compact distributed ladder attenuator Simple and compact structures for an attenuator or resistor ladder can be implemented in a standard integrated circuit process as well as hybrid, thick or thin film ceramic processes, which allows metallization along with resistive components. The structure has the ... | 07/26/2011 |
| 7965152 | Attenuator with a control circuit An attenuator system comprises an attenuator and a control circuit for controlling the attenuation of the attenuator. In one embodiment, the attenuator comprises two diodes or two diode connected transistors, and the control circuit comprises two transistors as the ... | 06/21/2011 |
| 7944323 | Temperature-compensated PIN-diode attenuator Temperature compensation is provided for a PIN-diode attenuator by temperature-sensitive resistive networks. In one embodiment, each temperature-sensitive resistive network includes a resistor connected in series to a parallel network formed from another resistor an... | 05/17/2011 |
| 7911293 | Thermometer coded attenuator Techniques are disclosed that allow for programmable attenuation using thermometer code steps. By thermometer coding the attenuator structure, monotonicity is guaranteed or otherwise greatly improved, which eliminates instability problems with automatic gain control... | 03/22/2011 |
| 7876173 | Signal output device, signal output control method, program and recording medium The present invention can control the power of an output from a device, which changes the amplitude of an input and outputs a result of the change, according to the frequency of the input so that the power is close to a desired value. An output control system (1 | 01/25/2011 |
| 7839233 | Attenuator A π-type voltage-controlled variable attenuator is disclosed. The variable attenuator may include variably resistive components in the series and shunt arms. The variably resistive components may be implemented as field effect transistors. The shunt arms may be cou... | 11/23/2010 |
| 7786822 | Four-state digital attenuator having two-bit control interface A four-state digital attenuator for an RF signal includes a first external terminal adapted to receive a first control voltage; a second external terminal adapted to receive a second control voltage, and a third external terminal connected to a fixed supply voltage.... | 08/31/2010 |
| 7675380 | Integrated digitally controlled linear-in-decibels attenuator An integrated digitally controlled linear-in-decibels attenuator circuit in which one or more sets of selection switches establish a desired attenuation by selectively connecting the input signal electrode to one or more corresponding resistive ladder networks conne... | 03/09/2010 |
| 7639100 | RF step attenuator A broadband, high-speed RF step attenuator implemented using long-lifetime PIN diode switches is presented which provides step attenuation across a significant portion of the entire RF frequency spectrum while maintaining minimal insertion loss, return loss, and har... | 12/29/2009 |
| 7626474 | Compensated attenuator circuit and oscilloscope utilizing the same An attenuator circuit. The attenuator circuit includes a resistive divider coupled to a capacitive network including first and second capacitive dividers. The resistive divider is configured to perform an N:1 attenuation of a signal in a low frequency range. The fir... | 12/01/2009 |
| 7609126 | Diode switch and attenuator for reducing a bias current Diodes and are connected between an input terminal and an output terminal. These diodes are connected in parallel, and the cathode of a latter-stage diode is connected to the anode of a former-stage diode through a capacitor. Specifically, from the DC point of view,... | 10/27/2009 |
| 7595705 | Attenuator and step attenuation device having the same An attenuator for attenuating an input signal at a predetermined rate and a step attenuation device having the same are provided. The attenuator includes first to sixth impedance components. A terminal of the first impedance component is connected to an input signal... | 09/29/2009 |
| 7528677 | Temperature compensation attenuator A temperature compensation attenuator comprises a base, a serial film thermistor and a parallel film resistor on the base, an input terminal and an output terminal which are connected to the serial film thermistor The serial film resistor is at least partially a fil... | 05/05/2009 |
| 7525395 | Step attenuator There is provided a step attenuator having two Pi-type attenuators and one bridged-T type attenuator that share some resistors. The step attenuator is used to prevent a reduction in frequency range caused by use of MOS transistors and reduce attenuation of signal po... | 04/28/2009 |
| 7492237 | Gain compensation circuit A gain compensation circuit comprises a first amplifier, a second amplifier, a filter, a first attenuator, a second attenuator and a third attenuator. The first amplifier is configured to amplify an input signal of the microwave signal processor. The filter is dispo... | 02/17/2009 |
| 7492236 | Gain compensation circuit A gain compensation circuit, applied to a microwave transceiver, includes a gain adjuster, a first attenuator and a second attenuator. The gain adjuster is disposed between a first amplifier and a filter for adjusting a nominal gain of the microwave transceiver. The... | 02/17/2009 |
| 7482891 | Interpolating programmable gain attenuator A programmable gain attenuator includes a termination resistor. A first termination switch connects one side of the termination resistor to a first output. A second termination switch connects another side of the termination resistor to a second output. A first resi... | 01/27/2009 |
| 7479843 | Radiofrequency attenuator and method Radiofrequency attenuator and method. The attenuator includes a pair of transparent windows. A chamber between the windows is filled with molten salt. Preferred molten salts include quarternary ammonium cations and fluorine-containing anions such as tetrafluoroborat... | 01/20/2009 |
| 7474170 | Attenuator A linearizer includes fifth diodes, a third resistor, sixth diodes, and a first npn heterojunction bipolar transistor. When a low-level voltage is applied to first and fourth control voltage terminals and a high-level voltage is applied to second and third control v... | 01/06/2009 |
| 7474169 | Attenuator An attenuator includes a first diode, a first control voltage terminal, a second diode, a first resistance, a second resistance, a third diode, a fourth diode, a fifth capacitance, a second control voltage terminal, a third control voltage terminal, a fourth control... | 01/06/2009 |
| 7449976 | Power efficient PIN attenuator drive circuit An attenuator circuit (10) having two or more branch circuits (12a to 12e) has inputs (14a to 14e) for the branch circuits (12a to 12e) being connected essentially in parallel... | 11/11/2008 |
| 7423514 | Constant-power constant-temperature resistive network A thermally stabilized device is described. Single or multiple input ports are accommodated and single and multiple power ports are described. The variation of resistance of a resistor subject to varying power dissipations is minimized by injecting complementary pow... | 09/09/2008 |
| 7417462 | Variable external interface circuitry on programmable logic device integrated circuits A programmable logic device (“PLD”) includes circuitry for optionally and variably modifying characteristics of an input signal in any of several respects. Examples of such modifications include AC coupling the signal into the PLD, low pass filtering the signal ... | 08/26/2008 |
| 7408396 | High voltage protection circuit Disclosed is a circuit to provide protection from an over voltage signal. The circuit protects against load dumps or positive transients applied to any electronic unit. The circuit isolates the protected circuitry from the transient voltage by two ways. The circuit ... | 08/05/2008 |
| 7394994 | Optical receiver circuit An optical receiver circuit comprising an optical converter circuit (38), comprising a photodiode and converting optical power into electrical power, a sensor circuit for deriving a control voltage VCONTR as a characteristic value of the electrical power outp... | 07/01/2008 |
| 7391268 | Power amplifying device comprising a stabilizing circuit A power amplifying device includes a stabilizing circuit between an input terminal and an amplifier. The stabilizing circuit has a first line, a second line, and a third line. The first line is connected to the ground. The length of the first line is equal to or lon... | 06/24/2008 |
| 7378895 | On-chip electrically alterable resistor A programmable, electrically alterable (EA) resistor, an integrated circuit (IC) chip including the EA resistor and integrated analog circuits using on-chip EA resistors. Phase change storage media form resistors (EA resistors) on an IC that may be formed in an arra... | 05/27/2008 |
| 7372313 | Variable impedance circuit and apparatus comprising said variable impedance circuit A variable impedance circuit includes at least one fixed resistance and a plurality of transistors between a first and a second terminal. The transistors belonging to the plurality of transistors are arranged parallel to one another and parallel to the resistance an... | 05/13/2008 |
| 7365617 | 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... | 04/29/2008 |
| 7362196 | Temperature compensation attenuator This specification discloses a temperature compensation attenuator comprising a base 6, a film thermistor 1 disposed on the base 6, an input terminal 3 and an output terminal 4 which are connected to the two ends of the film thermi... | 04/22/2008 |
