子分类：
| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 221 | Ultra-Low Voltage-Controlled Oscillator with Trifilar Coupling | US13744497 | 2013-01-18 | US20140203881A1 | 2014-07-24 | Ying-Ta Lu; Hsien-Yuan Liao; Ho-Hsiang Chen; Chewn-Pu Jou |
| The present disclosure relates to a device and method to reduce voltage headroom within a voltage-controlled oscillator by utilizing trifilar coupling or transformer feedback with a capacitive coupling technique. In some embodiments of trifilar coupling, a VCO comprises cross-coupled single-ended oscillators, wherein the voltage of first gate within a first single-ended oscillator is separated from the voltage of a second drain within a second single-ended oscillator within the cross-coupled pair. A trifilar coupling network is composed of a drain inductive component, a source inductive component, and a gate inductive component for a single-ended oscillator, wherein a coupling between drain inductive components and gate inductive components between single-ended oscillators along with a negative feedback loop within each single-ended oscillator forms a cross-coupled pair of transistors which reduces the drain-to-source voltage headroom to approximately a saturation voltage of a transistor within the cross-coupled pair. Other devices and methods are also disclosed. | ||||||
| 222 | SEMICONDUCTOR DEVICE | US14222822 | 2014-03-24 | US20140203845A1 | 2014-07-24 | Atsushi Umezaki |
| Provided is a semiconductor device exemplified by an inverter circuit and a shift register circuit, which is characterized by a reduced number of transistors. The semiconductor device includes a first transistor, a second transistor, and a capacitor. One of a source and a drain of the first transistor is electrically connected to a first wiring, and the other thereof is electrically connected to a second wiring. One of a source and a drain of the second transistor is electrically connected to the first wiring, a gate of the second transistor is electrically connected to a gate of the first transistor, and the other of the source and the drain of the second transistor is electrically connected to one electrode of the capacitor, while the other electrode of the capacitor is electrically connected to a third wiring. The first and second transistors have the same conductivity type. | ||||||
| 223 | RESONATOR | US14034398 | 2013-09-23 | US20140176246A1 | 2014-06-26 | Casper van der Avoort; Andreas Bernardus Maria Jansman; Robert James Pascoe Lander |
| A resonator has a main resonator body and a secondary resonator structure. The resonator body has a desired mode of vibration of the resonator alone, and a parasitic mode of vibration, wherein the parasitic mode comprises vibration of the resonator body and the secondary resonator structure as a composite body. In this way, unwanted vibrational modes are quenched by the second suspended body. | ||||||
| 224 | RESONANT CIRCUIT WITH AUTOMATED TRIMMING CAPABILITIES | US13719011 | 2012-12-18 | US20140167865A1 | 2014-06-19 | Sven Simons |
| According to an example embodiment, a device includes a resonant circuit configured and arranged to provide a peak current flow at a resonance frequency. A trimming circuit provides variable impedances to the resonant circuit and thereby changes the resonance frequency for the resonant circuit. A driver circuit is configured to generate a trimming signal that oscillates at a desired frequency. A switch circuit couples and decouples the driver circuit to the resonant circuit for driving the resonant circuit with the trimming signal. An amplitude detection circuit detects amplitudes for signals generated in response to the trimming signal being connected to the resonant circuit. A processing circuit correlates detected amplitudes from the amplitude detection circuit with different impedance values of the variable trimming circuit. | ||||||
| 225 | Method and Apparatus of a Resonant Oscillator Separately Driving Two Independent Functions | US14108329 | 2013-12-16 | US20140104007A1 | 2014-04-17 | Syed Enam Rehman |
| Capacitive adjustment in an RCL resonant circuit is typically performed by adjusting a DC voltage being applied to one side of the capacitor. One side of the capacitor is usually connected to either the output node or the gate of a regenerative circuit in an RCL resonant circuit. The capacitance loading the resonant circuit becomes a function of the DC voltage and the AC sinusoidal signal generated by the resonant circuit. By capacitively coupling both nodes of the capacitor, a DC voltage can control the value of the capacitor over the full swing of the output waveform. In addition, instead of the RCL resonant circuit driving a single differential function loading the outputs, each output drives an independent single ended function: thereby providing two simultaneous operations being determined in place of the one differential function. | ||||||
| 226 | HIGH-IF SUPERHETERODYNE RECEIVER INCORPORATING HIGH-Q COMPLEX BAND PASS FILTER | US14027849 | 2013-09-16 | US20140080436A1 | 2014-03-20 | Iman Madadi; Massoud Tohidian; Robert Bogdan Staszewski |
| A novel and useful reconfigurable superheterodyne receiver that employs a 3rd order complex IQ charge-sharing band-pass filter (BPF) for image rejection and 1st order feedback based RF BPF for channel selection filtering. The operating RF input frequency of the receiver is 500 MHz to 1.2 GHz with varying high IF range of 33 to 80 MHz. The gain stages are inverter based gm stages and the total gain of the receiver is 35 dB and in-band IIP3 at mid gain is +10 dBm. The NF of the receiver is 6.7 dB which is acceptable for the receiver without an LNA. The architecture is highly reconfigurable and follows the technology scaling. | ||||||
| 227 | METHOD FOR VARYING OSCILLATION FREQUENCY OF HIGH FREQUENCY OSCILLATOR | US14112205 | 2011-06-22 | US20140035686A1 | 2014-02-06 | Hideyuki Obata |
| The switching element is provided in a state of being electromagnetically coupled to the cavity resonator of the high frequency oscillator; the bias voltage applying terminal is connected to one electrode of the switching element; another electrode of the switching element is electrically connected to the cavity resonator (the anode shell in FIG. 1); the metal plate having a size enough for reflecting an electric wave to be transmitted before and after the switching element in a high-frequency manner is provided at any one end of the switching element; and by applying a bias voltage to the switching element and varying that, a reactance of the switching element is changed and a resonance frequency of the cavity resonator is varied. By this method, an oscillation frequency can be varied greatly relative to a small change in a bias voltage. | ||||||
| 228 | EARLY NOTIFICATION OF POWER LOSS IN THREE PHASE METER | US13538159 | 2012-06-29 | US20140002169A1 | 2014-01-02 | Anibal Diego Ramirez |
| A circuit arrangement generates an output oscillating signal indicative of voltage on any of plurality of line voltages. The circuit arrangement includes at least two zero-crossing detectors, a combiner, an integrator, and an oscillator. The first zero-crossing detection circuit detects a voltage level crossing on a first electrical signal corresponding to a first line voltage. The second zero-crossing detection circuit detects a voltage level crossing on a second electrical signal corresponding to a second line voltage. The combiner combines the output signals of the first zero-crossing detection circuit and the second zero-crossing detection circuit. The integrator is coupled to the output of the combiner. The oscillator has a control input and an oscillating signal output. The oscillator generates an oscillating signal at the oscillating signal output based on a signal present at the control input. The control input receives an output signal of the integrator. | ||||||
| 229 | VOLTAGE CONTROLLED OSCILLATOR | US13943174 | 2013-07-16 | US20130300511A1 | 2013-11-14 | Yeong-Sheng LEE |
| A voltage controlled oscillator generating an oscillation signal according to a first control signal without a silent region. The voltage controlled oscillator includes a control signal adjuster and a plurality of delay cells. The control signal adjuster receives the first control signal and generates a second and a third control signal according to the first control signal. The voltage level of the third control signal is higher than that of the second control signal and the voltage level of the second control signal is higher than that of the first control signal. The plurality of delay cells are ring-connected and controlled by the first, the second, and the third control signals to generate the oscillation signal. Each delay cell includes three sets of current generation transistors. The three sets of current generation transistors are separately controlled by the three different control signals. | ||||||
| 230 | PIEZOELECTRIC VIBRATING PIECE, PIEZOELECTRIC VIBRATOR, OSCILLATOR, ELECTRONIC DEVICE, AND RADIO-CONTROLLED TIMEPIECE | US13837097 | 2013-03-15 | US20130242710A1 | 2013-09-19 | Daishi ARIMATSU |
| There is provided a piezoelectric vibrating piece including: a piezoelectric plate that includes a pair of vibrating arm portions, and a base portion which integrally fixes the base end portions of the pair of vibrating arm portions along a length direction; excitation electrodes which are formed on the vibrating arm portions and vibrate the vibrating arm portions; mounting electrodes which are formed on the base portion and mount the piezoelectric plate on external portions using a joining member; and leading-out electrodes which connect the excitation electrodes and the mounting electrodes, in which the leading-out electrodes are formed by folding back several times between the excitation electrodes and the mounting electrodes. | ||||||
| 231 | Systems and Methods of Low Power Clocking for Sleep Mode Radios | US13406849 | 2012-02-28 | US20130222069A1 | 2013-08-29 | Arun Paidimarri; Danielle Griffith; Alice Wang |
| Systems and methods of low power clocking of sleep mode radios are disclosed herein. In an example embodiment, a crystal oscillator is purposefully mistuned to achieve lower power consumption, and then synchronized using a high frequency crystal oscillator. In an alternative embodiment, the input offset voltages of the comparator in an RC oscillator are cancelled, which allows low power operation and high accuracy performance when tuned to the high frequency crystal. A lower power comparator may be used with higher input offset voltages but still achieve higher accuracy. The RC circuit is switched back and forth on opposite phases of the output, cancelling the offset voltage on the inputs of the comparator. | ||||||
| 232 | VARIABLE CAPACITANCE DEVICE | US13745613 | 2013-01-18 | US20130181784A1 | 2013-07-18 | Yvan Morandini; Romain Debrouke |
| A variable capacitance device including: first and second transistors coupled in parallel between first and second nodes of the capacitive device, a control node of the first transistor being adapted to receive a control signal, and a control node of the second transistor being adapted to receive the inverse of the control signal, wherein the first and second transistors are formed in a same semiconductor well. | ||||||
| 233 | QUARTZ CRYSTAL UNIT, QUARTZ CRYSTAL OSCILLATOR AND ELECTRONIC APPARATUS | US13743460 | 2013-01-17 | US20130176831A1 | 2013-07-11 | Hirofumi KAWASHIMA |
| In a quartz crystal unit, the unit comprising a quartz crystal tuning fork resonator having a quartz crystal tuning fork base, and first and second quartz crystal tuning fork arms, each of the first and second quartz crystal tuning fork arms having a length, and a first main surface and a second main surface opposite the first main surface, at least one groove being formed in a central linear portion of at least one of the first and second main surfaces of each of the first and second quartz crystal tuning fork arms and formed continuously in the central linear portion along the length of the corresponding one of the first and second quartz crystal tuning fork arms, an overall length of the quartz crystal tuning fork resonator being less than 2.1 mm. | ||||||
| 234 | Method and Apparatus of a Resonant Oscillator Separately Driving Two Independent Functions | US13340790 | 2011-12-30 | US20130169368A1 | 2013-07-04 | Syed Enam Rehman |
| Capacitive adjustment in an RCL resonant circuit is typically performed by adjusting a DC voltage being applied to one side of the capacitor. One side of the capacitor is usually connected to either the output node or the gate of a regenerative circuit in an RCL resonant circuit. The capacitance loading the resonant circuit becomes a function of the DC voltage and the AC sinusoidal signal generated by the resonant circuit. By capacitively coupling both nodes of the capacitor, a DC voltage can control the value of the capacitor over the full swing of the output waveform. In addition, instead of the RCL resonant circuit driving a single differential function loading the outputs, each output drives an independent single ended function; thereby providing two simultaneous operations being determined in place of the one differential function. | ||||||
| 235 | OSCILLATOR AND SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE | US13364903 | 2012-02-02 | US20120200364A1 | 2012-08-09 | Yoichi Iizuka; Yasuo Ikeda; Satoshi Inishi |
| An oscillator and a semiconductor integrated circuit device with an internal oscillator capable of compensating the temperature characteristics even when there is a large parasitic capacitance too large to ignore directly between the output terminals of the oscillator. In an oscillator containing an inductance element L, and a capacitive element C, and an amplifier each coupled in parallel across a first and second terminal, the amplifier amplifies the resonance generated by the inductance element and capacitive element and issues an output from the first terminal and the second terminal, and in which a first resistance element with a larger resistance value than the parasitic resistance of the inductance element between the first terminal and the second terminal, is coupled in serial with the capacitive element between the first terminal and the second terminal. | ||||||
| 236 | 振荡器 | CN201620613700.2 | 2016-05-25 | CN205666818U | 2016-10-26 | L·洛蒂; A·马赞蒂; A·帕洛塔; F·斯维尔托 |
| 本实用新型涉及振荡器。振荡器具有发射振荡信号的振荡器输出。该振荡器包括各自具有相同电路拓扑的振荡器芯。一组配置开关将选定数量的振荡器芯并联地耦合以生成振荡信号。围绕中心轴线对称地布置振荡器芯。以花瓣状图案布置振荡器芯的平面电感器，同时平面电感器形成花瓣状图案的花瓣。响应于接收振荡信号的调制设备的选定的相位噪声阈值，进行振荡器芯的选定耦合。 | ||||||
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