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Vehicular Impact Signaling Device
An apparatus for the deployment of a visible plume to alert other motorists that a proximate motor vehicle has been involved in a collision.
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| Number | Title | Issue Date |
| 8149064 | Power amplifier circuitry and method A method and apparatus is provided for use in power amplifiers for reducing the peak voltage that transistors are subjected to. A power amplifier is provided with first and second switching devices and an inductor connected between the switching devices. The switchi... | 04/03/2012 |
| 8134410 | Transceiver gain calibration Transceivers with multiple gain stages that include open loop and closed loop amplifiers are subject to differential non-linearity (DNL) errors in their total gain versus gain index curve due to the gain step variability of the open loop amplifiers. The initial and ... | 03/13/2012 |
| 8098102 | RF power amplifier and RF power module using the same The RF power amplifier circuit including multiple amplification stages has a previous-stage amplifier, a next-stage amplifier and a controller. The previous-stage amplifier responds to an RF transmission input signal. The next-stage amplifier responds to an amplific... | 01/17/2012 |
| 8072272 | Digital tunable inter-stage matching circuit A tunable inter-stage matching circuit that can improve performance is described. In an exemplary design, an apparatus includes a first active circuit (e.g., a driver amplifier), a second active circuit (e.g., a power amplifier), and a tunable inter-stage matching c... | 12/06/2011 |
| 7948324 | Power efficient multistage amplifier and design method A multistage amplifier and design method are disclosed. The multistage amplifier has a plurality of amplifier stages, each stage having an amplifier designed and biased to operate at or near the amplifier's power added efficiency (PAE) peak. The PAE peak of each of ... | 05/24/2011 |
| 7920029 | Power amplifier A radio frequency power amplifier has first and second amplifier stages coupled in series, one of which is operated in class F and the other is operated in inverse class F; an envelope detector adapted to detect an envelope of the input signal; a power supply couple... | 04/05/2011 |
| 7868703 | Passive spectrum control for pulsed RF power amplifiers A multi-stage RF power amplifier including passive circuitry for frequency spectrum control. In one example, a multi-stage RF power amplifier includes a first RF power transistor, a second RF power transistor, and a passive combination bandpass filter and impedance ... | 01/11/2011 |
| 7714663 | Cascode low noise amplifier with a source coupled active inductor A cascode low noise amplifier includes an input transistor and an output transistor cascode together, the input transistor has a source coupled to an active inductor, and the output transistor has a drain to provide an output signal. By using the active inductor, th... | 05/11/2010 |
| 7583150 | Power efficient multistage amplifier and design method A multistage amplifier and design method are disclosed. The multistage amplifier has a plurality of amplifier stages, each stage having an amplifier designed and biased to operate at or near the amplifier's power added efficiency (PAE) peak. The PAE peak of each of ... | 09/01/2009 |
| 7545220 | Method for shaping signal pulses The invention relates to a method and apparatus for shaping an input signal Son which is input to a multi-stage amplifier arrangement, to provide a definable output signal contour Soff. Individual amplifier stages are controlled by a control si... | 06/09/2009 |
| 7522004 | High-frequency electronic switch, and burst wave generating device using the same and short range radar using the same A high-frequency electronic switch includes a signal input terminal to which a high-frequency signal to be switched is input, a plurality of amplifying circuits with transistors, to respectively amplify the high-frequency signal to be switched sequentially, the ampl... | 04/21/2009 |
| 7466205 | Ultra-wideband low noise amplifier and amplification method thereof An ultra wideband low noise amplifier (UWB LNA) and amplification method thereof, providing a substantially achieved bandwidth extension by pole-zero cancellation and utilized to transform input impedance matching up to 50 ohm for gaining low noise figure. The ultra... | 12/16/2008 |
| 7443245 | High frequency power amplifier circuit and electronic component for high frequency power amplifier In a high frequency power amplifier circuit that supplies a bias to an amplifying FET by a current mirror method, scattering of a threshold voltage Vth due to the scattering of the channel impurity concentration of the FET, and a shift of a bias point caused by the ... | 10/28/2008 |
| 7443236 | CDMA power amplifier design for low and high power modes An amplifier circuit responsive to a power mode signal improves efficiency at low power levels without compromising efficiency at high power levels. At low power levels, high impedance is presented with suitable adjustment in the phase of the signal. Also, providing... | 10/28/2008 |
| 7439809 | Radio frequency power amplifier There are provided an RF power amplifier transistor (2), a bias supply circuit (51) which supplies a bias current to the base of the RF power amplifier transistor and a bias control circuit (52) connected between the base of the RF power amplifi... | 10/21/2008 |
| 7439805 | Enhancement-depletion Darlington device An apparatus comprising a Darlington transistor pair comprising a first transistor and a second transistor. The first transistor may have a gate configured to receive an input signal. The second transistor may have a gate coupled to a source of the first transistor.... | 10/21/2008 |
| 7436257 | High-efficiency mixed-mode power amplifier Provided is a power amplifier of a low-power consumption system that has linearity at a peak output power while increasing efficiency in a most frequently used range, and thereby enables a battery to last longer. The power amplifier includes an input impedance match... | 10/14/2008 |
| 7427898 | Detecting amplifier out-of-range conditions Out-of-range conditions are detected in amplifier CMOS or BiCMOS circuitry that includes a control transistor (MS) connected in series with a cascode transistor (MSC), and a differential amplifier (A1) with an inverting input connected t... | 09/23/2008 |
| 7420424 | Power amplifier transmission line transformer Disclosed herein is a power amplifier which is used in a wireless communication system and is capable of improving efficiency in an entire output power range and extending the dynamic range without additional switches, by including a drive amplification unit and a p... | 09/02/2008 |
| 7408412 | Power amplifier and wireless communication device There are provided a power amplifying transistor, a bias circuit which supplies a bias current to the base of the power amplifying transistor, a current mirror circuit which detects a peak value of the collector voltage of the power amplifying transistor, and a cont... | 08/05/2008 |
| 7391269 | Amplifying circuit The invention provides an amplifying circuit for reducing electric power consumption at a standby mode time. Therefore, in DMOS and NMOS transistors constituting a cascode amplifier, the gate of the DMOS transistor of an initial stage is biased to a grounding voltag... | 06/24/2008 |
| 7382197 | Adaptive tuning circuit to maximize output signal amplitude for an amplifier An adaptive tuning circuit to maximize the output signal amplitude of a band-pass amplifier, comprising a control circuit to tune the peak frequency of the amplifier by monitoring the change in the output signal amplitude over two successive time sampling intervals.... | 06/03/2008 |
| 7378909 | Radio-frequency power amplifier apparatus and method of adjusting output power thereof By using a radio-frequency power amplifier which turns off an Nth stage radio-frequency amplifying transistor when the level of radio-frequency output power falls below a predetermined value, it is possible to improve the linearity when the level of the radio-freque... | 05/27/2008 |
| 7372335 | Wideband circuits and methods Embodiments of the present invention include circuits and methods with wide bandwidths. In one embodiment, parasitic capacitances of the output of a first stage and the input of a second stage are included in a network. The output of the first stage is coupled to th... | 05/13/2008 |
| 7365605 | High voltage, high current, and high accuracy amplifier A method and system to use voltage isolated and floating differential output amplifiers wired in series and parallel to achieve arbitrary output drive voltage and current for the applications load. A second embodiment uses multiple matched voltage-isolated and float... | 04/29/2008 |
| 7362170 | High gain, high efficiency power amplifier An amplifier has a main amplifier circuit with multiple amplification stages, including a driving stage and an auxiliary amplifier circuit with multiple amplification stages, including a driving stage. A splitter circuit splits an input signal to provide path asymme... | 04/22/2008 |
| 7362172 | Variable gain circuit Low distortion is implemented even in a high input level, and a smooth change in gain is maintained. A first amplifier (10) with high gain and low noise that can be gain-controlled by a first gain control signal, and a second amplifier (20) with low ga... | 04/22/2008 |
| 7355471 | Circuit for DC offset cancellation A circuit having multiple overlapped feedback loops for DC offset cancellation is provided with applying in one of multistage amplifier, multistage filter, and the combination thereof. The circuit includes a plurality of negative feedback variable bandwidth switches... | 04/08/2008 |
| 7352247 | Triple cascode power amplifier of inner parallel configuration with dynamic gate bias technique Provided is a power amplifier which fits to a deep-submicron technology in radio frequency wireless communication. The power amplifier includes a cascode including a first transistor which receives and amplifies an input signal, and a second transistor which is conn... | 04/01/2008 |
| 7352246 | Noise-shaping amplifier with waveform lock A generalized amplifier architecture is described which employs noise-shaping feedback, and for which the output waveform closely resembles the input waveform. ... | 04/01/2008 |
| 7352245 | Auto-range current mirror circuit An auto-range current mirror circuit has a current sensing circuit, a front and rear stage current mirrors each has an adjustable amplifying rate. The current sensing circuit presets a threshold current and has an input current of the front stage current mirror. The... | 04/01/2008 |
| 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 |
| 7345540 | Amplifier circuit having a compensating amplifier unit for improving loop gain and linearity An amplifier circuit includes a feedback loop; a former stage amplifier unit coupled to an input node of the amplifier circuit and the feedback loop for amplifying the difference between an input signal received from the input node and an output signal which comes b... | 03/18/2008 |
| 7345548 | Radiofrequency amplifier device, in particular for cellular mobile telephone A radiofrequency amplifier device includes a transconductor stage having an input for receiving a radiofrequency signal, and a cascode stage connected to the output of the transconductor stage. The device also includes an auxiliary radiofrequency amplifier compensat... | 03/18/2008 |
| 7345534 | Efficient power amplification system A system for efficient power amplification of an electromagnetic signal includes a switchplexer having at least two inputs and an output. The switchplexer may be configured to provide communication between a selected switchplexer input and the switchplexer output. T... | 03/18/2008 |
| 7336127 | Doherty amplifier configuration for a collector controlled power amplifier An efficient power amplifier circuitry for a mobile terminal or similar wireless communication device is provided. The power amplifier circuitry includes an output stage configured as a collector controlled Doherty amplifier, wherein the collector controlled Doherty... | 02/26/2008 |
| 7330071 | High efficiency radio frequency power amplifier having an extended dynamic range A system and method are provided for efficiently amplifying a radio frequency signal. In general, the system includes power amplifier circuitry that efficiently amplifies an input signal under power back-off conditions. In one embodiment, the power amplifier circuit... | 02/12/2008 |
| 7315205 | Multiple power mode amplifier with bias modulation option and without bypass switches A multiple power mode amplifier provides a low and a high power mode without using switches. This amplifier may be used in radio frequency (RF) applications such as mobile telephones, pagers, portable digital assistants, and wireless e-mail devices. In the low power... | 01/01/2008 |
| 7298207 | Automatic gain control for a multi-stage gain system Systems and methods are disclosed for providing automatic gain control of a multi-stage system. A method can include defining at least one parameter that is adapted to at least one of maximize hardware capacity of each of a plurality of gain stages and mitigate part... | 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 |
