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7629858 Time delay oscillator for integrated circuits  
One aspect relates to an oscillator, and various oscillator embodiments comprise an amplifier and line driver with an input and an output and a transmission line with a predetermined transmission...
7583948 Time constant automatic adjusting circuit, filter circuit system, and method of automatically adjusting time constant  
A time constant automatic adjusting circuit comprises: a filter circuit varying a phase of an clock signal to be input so as to output the clock signal; a phase comparison circuit comparing a phase...
7336135 Oscillator and semiconductor device  
An oscillator for ensuring the phase relationship between two resonant circuits coupled by a coupling circuit. A first resonant circuit outputs two signals having different phases, and a second...
7315220 Voltage controlled oscillator  
A voltage controlled oscillator (VCO) having a single stage ring-oscillator having both coarse and fine control of the frequency of oscillation is described. In an embodiment the VCO may include a...
7295081 Time delay oscillator for integrated circuits  
One aspect relates to an oscillator, and various oscillator embodiments comprise an amplifier and line driver with an input and an output and a transmission line with a predetermined transmission...
7286022 Resistor-capacitor (RC) oscillator insensitive to process, voltage, and temperature variances  
There is provided a resistor-capacitor (RC) oscillator circuit insensitive to process, voltage, and temperature variances. The RC oscillator circuit includes a delay unit, a resistor unit, a...
7221920 Voltage controlled oscillator, frequency synthesizer and communication apparatus  
A voltage controlled oscillator includes a resonator configured to resonate with an initial oscillation frequency during starting period of oscillation and a steady oscillation frequency during a...
7181181 Multi-band transceiver for a wireless communication system  
A local oscillation signal generator and a multi-band transceiver including the local oscillation signal generator are provided. The multi-band transceiver includes a fractional-N phased locked...
6970048 Inductive-capacitive (LC) based quadrature voltage controlled oscillator (VCO) with deterministic quadrature signal phase relationship  
A circuit and method for generating quadrature signals with a deterministic phase relationship. Between two inductive-capacitive (LC) based quadrature voltage controlled oscillators (VCO), phase...
6963252 Controllable oscillator with amplitude stabilization  
Controllable oscillator circuit comprising a regenerative loop which incorporates a cascade circuit of first and second sections each having a controllable gain and a phase shift which is 90° at...
6891444 Oscillator circuit for locking two or more LC-oscillators by mutual inductance coupling  
A method of locking a first LC-oscillator with a second LC-oscillator and a circuit and an arrangement therefore. The method comprises coupling by mutual inductance a resonance inductor of the...
6683508 System and method of increasing a self-resonant frequency of a tuning circuit and an oscillator employing the same  
A segmented inductor for use with a tuning circuit, a method of increasing a self-resonant frequency of a tuning circuit and an oscillator employing the circuit and method. In one embodiment, the...
6535071 CMOS voltage controlled phase shift oscillator  
Structures and methods for CMOS voltage controlled phase shift oscillators are provided. The CMOS voltage controlled phase shift oscillators, or phase shift circuit, includes any odd number of...
6504441 Voltage controlled oscillator with selectable frequency range  
A frequency sweep voltage controlled oscillator (VCO), with a selectable range of output frequencies is provided. The VCO includes a frequency range circuit to accept an input signal,...
6462626 Quadrature output oscillator device  
A quadrature output oscillator device ( 22 ) includes a first voltage controlled oscillator ( 40 ) and a second voltage controlled oscillator (44). The second voltage controlled oscillator ( 44 )...
6404308 Phase-compensated impedance converter  
Integrated circuits, for example, gyrator circuits include transistors that are preferably MOS devices and that are provided with series feedback networks, which compensate for the effects of...
6396360 Method and circuitry for implementing an inductor-capacitor phase interpolated voltage-controlled oscillator  
Method and circuitry for implementing an inductor-capacitor voltage-controlled oscillator with improved overall performance. In an exemplary embodiment, the present invention includes two phase...
6344778 Voltage-controlled oscillator, phase synchronization circuit and signal processing circuit  
A delay-time variable filter delays an input signal by a desired time according to a control signal from a control input node and outputs the delayed input signal, and a positive feedback loop...
6239661 Transmitter and an oscillator network for use in the transmitter  
A transmitter having an integratable quadrature oscillator network for simultaneously producing a sine wave and a cosine wave. The digital direction of rotation (whether the frequency is positive...
6215368 Voltage controlled oscillating device  
Voltage controlling/oscillating device comprises a terminal for setting the delay rate in the delay unit and the delay interpolator. Clock signal whose phase is inverted by the inverting gate is...
6204733 Multiple-phase-interpolation LC voltage-controlled oscillator  
A phase interpolation voltage controlled oscillator (VCO). In one embodiment, the VCO is a multiple phase interpolation VCO. The multiple phase interpolation VCO includes a plurality of phase...
6194972 Gyrator with loop amplifiers connected to inductive elements  
A gyrator includes shunt or feedback nodal capacitors and shunt lossy inductors without shunt load resistors. The effective nodal capacitance is reduced by the introduction of the shunt lossy...
6137370 Oscillator having loop including transconductor bandpass filter  
An oscillator having a feedback loop circuit formed by two transductors and one amplifier, and two capacitors respectively connected to the outputs of these transconductors. The transconductors and...
6018219 Home and small business phone system for operation on a single internal twisted pair line and methodology for operating the same  
A small and economically fabricated CMOS voltage controlled crystal oscillator is provided by coupling three inverter amplifiers in series with a regenerative crystal controlled feedback loop. The...
5982248 Integrated circuit replacement operating clock signal generator having a crystal oscillator  
An integrated circuit configuration for producing a clock signal includes an integrated inverter connected between an input terminal and an output terminal. A crystal is externally connected to the...
5912596 Apparatus and method for frequency tuning an LC oscillator in a integrated clock circuit  
A method and system in an integrated circuit for frequency tuning oscillator circuits. An oscillator circuit within an integrated circuit is formed on a substrate such that the oscillator circuit...
5852385 Voltage controlled oscillator circuit composed of OTA-C filters  
A voltage controlled oscillator circuit comprises a first lowpass OTA-C filter with differential input and differential output and a second lowpass OTA-C filter with differential input and...
5734299 Microwave VCO having reduced supply voltage  
A transconductance amplifier for use in a low noise, microwave voltage controlled oscillator. The transconductance amplifier incorporates a linear amplifier having ratioed transistors to provide...
5712601 Oscillation circuit  
An oscillation circuit is provided which is easily adjusted with a high degree of accuracy. The oscillation circuit including a filter having a time constant and an inverting amplifier which feeds...
5712599 Oscillator having two cascaded gain stages with feedback operating near their unity gain frequency  
An oscillating signal generator for generating an oscillating signal having a variable oscillation frequency that can be near the unity gain frequency of the gain devices within the oscillating...
5652549 Integrated circuit ring oscillator having line driver with double line feedback  
A monolithically integrated oscillator is implemented as ring oscillator with a line driver and a double line formed on one and the same chip. A running time of the double line is selected...
5635880 CMOS microwave multiphase voltage controlled oscillator  
A microwave differential amplifier comprises a first and a second matched NMOS device, each connected with the source to a common bias node, the gate to an input port for receiving a differential...
5629652 Band-switchable, low-noise voltage controlled oscillator (VCO) for use with low-q resonator elements  
Both differential and single-ended band-switchable VCOs are described. The single-ended version of the voltage controlled oscillator in its most basic form includes a load, two transistors, two...
5608360 Oscillator formed of high frequency resonators and method of generating high frequency oscillator signal having reduced vibration sensitivity and phase noise and improved loop group delay  
Multiple resonator stages are connected in series to form a closed loop. Each of these cascaded resonator stages includes at least a high frequency resonator and an amplifier. The amplifier...
5581215 Voltage controlled oscillator having frequency and amplitude controlling loops  
A voltage controlled oscillator that completely eliminates the need for any externally mounted coil and capacitor includes a first loop and a second loop. The first loop provides band-limiting of...
5543742 Phase shifting circuit  
A phase shifting circuit has an oscillation circuit. The oscillation circuit is provided with a charging and discharging capacitor at which the oscillation signal is generated. The oscillation...
5483195 Second generation low noise microwave voltage controlled oscillator  
A low noise linear amplifier and a microwave voltage controlled oscillator constructed from such amplifier. Each amplifier within the VCO utilizes a ratioed transistor configuration to generate a...
5459438 Negative feedback frequency stabilized pulse oscillator  
This invention relates to oscillators employing a primary feedback network and a high pass filter feedback network. The feedback networks are connected between the input and output of a of a high...
5450039 Integrated circuit having self-contained voltage control oscillation circuit  
An integrated circuit has a self-contained voltage control oscillation circuit wherein the oscillating frequency is controlled according to a control voltage; The circuit includes a first...
5446418 Ring oscillator and constant voltage generation circuit  
A ring oscillator according to the invention includes a plurality of inverters cascade-connected between an input node and an output node. Each inverter includes four transistors connected in...
5414392 Amplifier circuit  
An electrical circuit comprising means for receiving an input signal for encoding or modulating and amplification. Multiple amplification stages including at least one transconductance amplifier...
5359298 VCO having voltage-to-current converter and PLL using same  
The voltage controlled oscillator in a phase-locked loop comprises a voltage-current converter (62) and a current frequency converter (34). The voltage-current converter (62) comprises a voltage...
5352993 Voltage controlled saw oscillator  
A voltage controlled surface acoustic wave oscillator includes an integrated circuit and a two port resonator connected as a feedback element around the integrated circuit. The integrated circuit...
5317287 Low-gain, range programmable, temperature compensated voltage controlled ring oscillator  
A multirange low-gain voltage controlled ring oscillator generates a substantially temperature-independent oscillator signal. Each frequency range is formed by utilizing a selected value of a...
5302920 Controllable multi-phase ring oscillators with variable current sources and capacitances  
An electrically controlled oscillator circuit having multi-phase outputs with programmable frequency. The circuit includes a ring oscillator having a plurality of inverting stages. Each stage has...
5300898 High speed current/voltage controlled ring oscillator circuit  
A differential inverter such as may be used in an oscillator circuit. The differential inverter is connected between first and second current sources. The differential inverter includes first and...
5298870 Voltage controlled ring oscillator having differential amplifier stages  
A voltage controlled oscillator comprises a plurality of differential amplification stages each arranged to introduce a phase shift between its differential input signal and its differential output...
5285173 Signal-controlled ring oscillator with delay cells having constant gain with change in frequency  
A ring-type oscillator with a plurality of delay cells including differential pairs of MOS transistors. Current sources supply current to each pair, and the magnitude of the current supplied is...
5272453 Method and apparatus for switching between gain curves of a voltage controlled oscillator  
A method and apparatus for switching between gain curves of a switched gain voltage controlled oscillator (VCO) 52, 52' or 52". In one form, the present invention uses a switched gain voltage...
5262735 Ring oscillator having outputs that are selectively combined to produce different frequencies  
A ring oscillator comprises a plurality of amplifiers connected in a multi-stage connection and each including a pair of output terminals from which first output signals are issued respectively; a...
Matches 1 - 50 out of 137 1 2 3 >