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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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....
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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