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7616072 Integrated circuit and receiver of a global positioning system (GPS)  
A global positioning system and integrated circuit with a differential oscillator and with a starting circuit connected to the differential oscillator, wherein the differential oscillator has a...
7612626 Programmable varactor for VCO gain compensation and phase noise reduction  
A programmable varactor apparatus may include multiple binary weighted varactors controlled by multiple digital varactor bits. A programmable varactor apparatus may include a plurality of binary...
7612625 Bang-bang architecture  
In one embodiment, the present invention includes an apparatus having a voltage controlled oscillator (VCO) to generate a first clock signal having a frequency controlled by a bias current coupling...
7609123 Direct modulation type voltage-controlled oscillator using MOS varicap  
Transistors M 11 and M 12 are cross-coupled to each other so as to form a negative resistance circuit. First and second variable capacitor sections 10 and 20 are connected in parallel with an...
7609120 Voltage-controlled oscillator using LC resonator  
Provided is a voltage-controlled oscillator (VCO) using an LC resonator circuit which includes a first resonance circuit in which two serially connected varactor diodes and an inductor are...
7605667 Frequency synthesizer with a harmonic locked phase/frequency detector  
A frequency synthesizer. The frequency synthesizer comprises a harmonic locked phase/frequency detector, a low pass filter, a voltage controlled oscillator, and a frequency divider. The harmonic...
7602259 Voltage-controlled oscillator  
A voltage-controlled oscillator has an oscillation frequency controlled through a voltage applied across ends of a variable-capacitance element. The voltage-controlled oscillator has a frequency...
7598819 Electronic circuit with transistors sharing one and the same well  
The disclosure relates to an electronic circuit including at least one first and one second differential pair each including a plurality of transistors. All the transistors of said first and second...
7598817 Oscillator for outputting different oscillation frequencies  
An oscillator includes: oscillation units ( 11 through 1 n) outputting oscillation signals of different frequencies; a transmission line ( 15 ) to which outputs of the oscillation units ( 11, 12...
7592875 Injection-locked oscillator circuit  
An ILO circuit has a plurality of oscillator stages which are coupled to one another by means of a “tank lock” coupling. The coupling leads to an improved synchronization of the individual...
7589598 Dual-band voltage controlled oscillator  
The present invention discloses a dual-band voltage controlled oscillator (VCO), comprising a plurality of resonant circuits; an inductor module; a plurality of switches of current source; a buffer...
7589586 High frequency signal detection circuit  
A high frequency signal detection circuit includes an input terminal for a high frequency signal to be detected, a switch transferring the high frequency signal as intermittent ringing signal to a...
7586379 Voltage controlled oscillator with operation current adjusting device  
A voltage controlled oscillator has an amplifier circuit which includes an inductor and a variable capacitance element, and outputs an oscillation signal of an oscillation frequency corresponding...
7583156 Oscillator with multi-tap inductor, capacitors, and negative-Gm stages  
System and method for increasing the frequency tuning range of a RF/microwave LC oscillator. An electronic communications device includes a controller to regulate the operation of the electronic...
7579920 Self-biasing low-phase noise LC oscillator  
A self-biasing negative transconductance LC oscillator that uses self-biasing circuitry to regulate a current source that feeds negative transconductance circuitry and direct current (DC) bias...
7573342 VCO pre-compensation  
A VCO device is described that has pre-compensation. Digitally switchable compensation capacitors are selectively activated to adjust operation of the VCO to mitigate undesirable operational...
7569912 Differential variable capacitors and their applications  
An integrated circuit design for differential variable capacitors uses an integration method to integrate an integrated circuit having differential variable capacitors as a whole, and takes the...
7567139 Voltage controlled oscillator, and PLL circuit and wireless communication apparatus using the same  
A voltage controlled oscillator including an inductor circuit including inductors 101, 102 , a variable capacitance circuit 110 having variable capacitance elements 111, 112 changing a...
7564320 Voltage-controlled oscillator  
A voltage-controlled oscillator (VCO) includes: an oscillation unit, for generating an oscillation signal according to a biasing current; a current mirror, for providing the biasing current, the...
7564318 Switch capacitance and varactor banks applied to voltage controlled oscillator having constant frequency tuning sensitivity  
A variable capacitance applied to a voltage controlled oscillator includes a switch capacitance bank including a plurality of controllable capacitor paths for selectively connected between a first...
7561001 Electronic oscillator circuit device  
An electronic circuit device includes a negative resistance generating circuit, a second transistor and a path. The negative resistance generating circuit has a first transistor having a control...
7561000 Oscillator circuit for a sensor  
An oscillator circuit for a sensor, with a tuned circuit and an operational amplifier, the electrical oscillation of the tuned circuit is capable of being tapped between a first terminal and a...
7557668 Injection-locked frequency divider  
An injection-locked frequency divider is provided. The injection-locked frequency divider includes a variable reactance unit, a signal injection unit, a first switch, a second switch, a first...
7554416 Multi-band LC resonance voltage-controlled oscillator with adjustable negative resistance cell  
Provided is an LC resonance voltage-controlled oscillator (VCO) used for a multi-band multi-mode wireless transceiver. In order to generate a multi-band frequency, a capacitor bank and a switchable...
7551038 Multi-phase voltage-control oscillator  
A multi-phase voltage-control oscillator including a first voltage-control oscillator circuit and a second voltage-control oscillator circuit is provided. The first voltage-control oscillator...
7548132 Monolithic clock generator and timing/frequency reference  
In various embodiments, the invention provides a clock generator and/or a timing and frequency reference, with multiple operating modes, such power conservation, clock, reference, and pulsed modes....
7547970 Semiconductor device  
A semiconductor device, including a semiconductor substrate having an element region on a surface thereof, an electrical element being formed in the element region; an insulating layer formed on...
7545230 Back-gate coupling voltage control oscillator  
A voltage control oscillator (VCO) includes a VCO circuit and a back-gate coupling circuit, wherein the VCO circuit includes at least a first transistor, a second transistor and a resonant cavity...
7545227 Low-latency start-up for a monolithic clock generator and timing/frequency reference  
An apparatus, system and method are provided for low-latency start-up of a free-running harmonic oscillator. The exemplary apparatus embodiment comprises a first and second current sources to...
7535308 Voltage-controlled oscillator decreasing phase noise  
A voltage-controlled oscillator includes an LC bank, a negative resistor circuit, a DC block, an AC block including a source resistor, and a first bias circuit controlled by a junction node of a...
7522023 Gyrator with feedback resistors  
A gyrator includes a gyrator core and at least one common mode feedback circuit. The gyrator core includes four inverters mutually connected in a loop configuration between a pair of input ends and...
7512389 Active inductors using bipolar silicon transistors  
An active inductor includes bipolar transistors T 1 , T 2 , T 3 and TD (TD being arranged in diode), where T 1 's emitter is connected to an output port and to T 2 's collector. T 2 's base is...
7511589 DFY of XtalClkChip: design for yield of trimming-free crystal-free precision reference clock osillator IC chip  
A Design For Yield (DFY) of Crystal Chip (XTALCHIP (Trademark for a chip equivalent to a crystal resonator)) is to have the high yield of high quality high accurate clock chip to be able to...
7511588 Flux linked LC tank circuits forming distributed clock networks  
CMOS LC tank circuits and flux linkage between inductors can be used to distribute and propagate clock signals over the surface of a VLSI chip or processor. The tank circuit offers an adiabatic...
7508280 Frequency adjustment techniques in coupled LC tank circuits  
CMOS LC tank circuits and flux linkage between inductors can be used to distribute and propagate clock signals over the surface of a VLSI chip or μprocessor. The tank circuit offers an adiabatic...
7508279 Resonance circuit with variable diodes  
A resistance having a high impedance is connected between anode terminals of two variable capacitance diodes sharing a cathode, and the components described above are sealed in one package. The...
7504935 Transponder  
A transponder has a transponder tuned circuit, an energy store or energy supply and a starter device. The transponder tuned circuit has a tuned circuit capacitor and a tuned circuit coil with an...
7486154 Flicker noise degeneration technique for VCO  
An oscillating circuit having improved noise degeneration includes an oscillator and a noise degeneration circuit. The oscillator is adapted to provide a differential oscillating signal between...
7482887 Multi-band tunable resonant circuit  
A fully integrated, programmable mixed-signal radio transceiver comprising a radio frequency integrated circuit (RFIC) which is frequency and protocol agnostic with digital inputs and outputs, the...
7479839 Varactor bank switching based on negative control voltage generation  
A method and apparatus for varactor bank switching for a voltage controlled oscillator is disclosed. Varactor bank switching involves generating a negative bias voltage signal as a control signal...
7477495 System and method of ESD protection of integrated circuit components  
An integrated circuit includes first and second power supply voltage terminals, a voltage controlled oscillator (VCO), and a deep N-well field effect transistor (FET). The VCO has a first node...
7477113 Voltage-controlled capacitance linearization circuit  
A linear voltage-controlled capacitance circuit is provided that includes a plurality of differentially coupled metal-oxide-semiconductor (MOS) varactor pairs. Each MOS varactor pair is operable to...
7463107 Resonant circuit and oscillator having a resonant circuit  
The invention is directed to a resonant circuit having a frequency-determining element which has at least one switchable frequency-changing element connected in parallel therewith. The...
7463106 Push-push voltage controlled oscillator for obtaining differential signals  
Disclosed is a push-push voltage controlled oscillator which obtains output signals having a frequency two times the fundamental resonance frequency of an LC resonator with differential signals...
7449973 Semiconductor circuit for reducing flicker noise  
A semiconductor circuit for reducing flicker noise includes a negative-conductance generator and a body bias voltage supplying circuit. The negative-conductance generator includes a pair of...
7446617 Low power consumption frequency divider circuit  
The present invention discloses a low power consumption frequency divider circuit. It mainly comprises a signal source; a signal injection circuit; and an oscillator circuit. The low-power...
7432768 Voltage controlled digital analog oscillator and frequency synthesizer using the same  
Provided are a voltage controlled digital analog oscillator and a frequency synthesizer using the same, the oscillator comprising an oscillator having a frequency of an output signal being...
7423495 Oscillator and method for generating an oscillator signal  
An oscillator includes a first resonator circuit, a second resonator circuit coupled to the first resonator circuit and a reconfigurable network having a transconductance and coupled to at least...
7420429 Source coupled differential complementary colpitts oscillator  
A source coupled differential complementary Colpitts oscillator is described, which enables a differential oscillation and also can improve phase noise performance by source-coupling a...
7394328 Oscillator circuit and test apparatus  
An oscillator circuit that generates an oscillation signal is provided. The oscillator circuit includes an oscillator that generates the oscillation signal based on positive feedback of a signal, a...
Matches 1 - 50 out of 406 1 2 3 4 5 6 7 8 9 >