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| Number | Title | Issue Date |
| 8183938 | Tuning methods and apparatus for inductively coupled power transfer (ICPT) systems A method is provided for controlling a resonant circuit (1) of an ICPT system. The resonant circuit has a controlled variable reactance (2), and a predetermined perturbation is introduced in the magnitude of variable reactance. The change in a property... | 05/22/2012 |
| 8115557 | Variable inductance circuitry for frequency control of a voltage countrolled oscillator An electronic device is made from a first substrate with device circuitry including an inductor and a second substrate with inductance adjustment circuitry including a number of other inductors. The substrates are assembled together to be opposite one another. The o... | 02/14/2012 |
| 8022776 | Origami cascaded topology for analog and mixed-signal applications The present disclosure relates to coupled circuits and methods of coupling circuits having a power supply wherein a plurality of transistors are inductively coupled directly to the power supply for providing a single DC supply voltage directly to each of the plurali... | 09/20/2011 |
| 7936224 | Voltage controlled oscillator An embodiment of the voltage controlled oscillator is provided. The oscillator comprises a first inductor set, a second inductor set, a second capacitor, a voltage source and a negative resistance element. The inductance of the second inductor set is k times the ind... | 05/03/2011 |
| 7830212 | Phase locked loop, voltage controlled oscillator, and phase-frequency detector A phase locked loop, voltage controlled oscillator, and phase-frequency detector are provided. The phase locked loop comprises a phase-frequency detector (PFD), a loop filter (LF), a voltage controlled oscillator (VCO), and a 3-stage frequency divider. The PFD recei... | 11/09/2010 |
| 7652541 | Dual-mode voltage-controlled oscillator A novel form of an integrated variable inductor uses an on-chip transformer together with a variable capacitor. The variable capacitor can either be a varactor or a switched capacitor array and is connected to the secondary coil of the transformer. By changing the c... | 01/26/2010 |
| 7403075 | Ultra wide band signal generator Disclosed is an ultra wide band signal generator. The ultra wide band signal generator generates a signal of a required frequency using a harmonic signal having a frequency range of a ultra wide band (UWB). The ultra wide band signal generator includes an active ind... | 07/22/2008 |
| 7375598 | System and method for increasing radio frequency (RF)/microwave inductor-capacitor (LC) oscillator frequency tuning range System and method for increasing the frequency tuning range of a RF/microwave LC oscillator. A preferred embodiment comprises a voltage controlled oscillator (VCO) configured to generate an output signal at a frequency that is dependent upon a magnitude of an input ... | 05/20/2008 |
| 7292108 | Voltage controlled oscillator for frequency synthesizer The voltage controlled oscillator includes an oscillating transistor, and first and second inductance elements which are connected in series and provided between an output terminal of the oscillating transistor and a high frequency ground point Vcc. Oscillating sign... | 11/06/2007 |
| 7268634 | Dual-mode voltage controlled oscillator using integrated variable inductors A novel form of an integrated variable inductor uses an on-chip transformer together with a variable capacitor. The variable capacitor can either be a varactor or a switched capacitor array and is connected to the secondary coil of the transformer. By changing the c... | 09/11/2007 |
| 7209011 | Method and apparatus for synthesizing high-frequency signals for wireless communications A semiconductor package includes a package substrate and an integrated circuit. The package substrate has a first surface. The integrated circuit couples electrically to the first surface of the package substrate. The integrated circuit and the package substrate tog... | 04/24/2007 |
| 7202712 | Multiphase resonant pulse generators A multiphase resonant pulse generator (74) has N groups of N−1 switches (44,46,48) which, when activated, form N paths from a power supply (Vdc) to ground or a reference voltage. Here N is a positive integer greater than 2. Each of the paths includes... | 04/10/2007 |
| 7200364 | Frequency modification circuitry for use in radio-frequency communication apparatus and associated methods Frequency modification circuitry may be employed as part of a crystal oscillator circuit to generate a reference signal with adjustable frequency. The frequency modification circuitry may be implemented as part of a crystal oscillator circuit that includes digitally... | 04/03/2007 |
| 7187240 | Integrated electronic circuit comprising a tunable resonator An integrated electronic circuit comprises at least first and second variable resonator elements that can be tuned by means of an electric signal (Vtune) and that are arranged on the same silicon substrate, and that are respectively integrated into a Mast... | 03/06/2007 |
| 7184733 | High frequency receiving device, integrated circuit used for the same, and TV receiver using them An oscillation frequency changing means is inserted between a tuner and an oscillator of local oscillator (56) of a high frequency receiving device, and the oscillation frequency changing means, in each frequency band received, changes the oscillation frequen... | 02/27/2007 |
| 7092675 | Apparatus and methods for generating radio frequencies in communication circuitry using multiple control signals A radio-frequency (RF) apparatus capable of transmitting RF signals includes transmitter path circuitry. The transmitter path circuitry includes a voltage-controlled oscillator (VCO) that generates an output signal. The frequency of the output signal of the VCO circ... | 08/15/2006 |
| 6982605 | Transformer coupled oscillator and method In a particular embodiment, an oscillator adjustment circuit is disclosed. The oscillator adjustment circuit includes a resonator portion comprising a capacitive element coupled to an inductive element and a signal balancing portion comprising a secondary coil of th... | 01/03/2006 |
| 6954111 | Voltage controlled oscillator having switches to adjust effective inductor lengths At the same control voltage Vtune, the oscillation frequency with only switches SW3 and SW4 being closed is higher than that with only switches SW1 and SW2 being closed. Accordingly, even when the oscillation frequency is lower than desig... | 10/11/2005 |
| 6927481 | Leadframe inductors The present invention integrates an inductor into a semiconductor package by integrally forming inductive segments in the leadframe. The inductive segments may be connected directly to a lead of the leadframe, or indirectly to a lead or a bond pad on a semiconductor... | 08/09/2005 |
| 6917245 | Absolute power detector A method and apparatus is provided for detecting the output power of a power amplifier. The output power is detected by detecting the absolute values of the voltage and current at the output of the amplifier and mixing the detected voltage and current to generate a ... | 07/12/2005 |
| 6903617 | Method and apparatus for synthesizing high-frequency signals for wireless communications A semiconductor package includes a package substrate and an integrated circuit. The package substrate has a first surface. The integrated circuit couples electrically to the first surface of the package substrate. The integrated circuit and the package substrate tog... | 06/07/2005 |
| 6861913 | Voltage-controlled oscillator with LC resonant circuit A voltage-controlled oscillator device with an LC-resonant circuit, in particular for implementing integrated voltage-controlled oscillators for the lower GHz range, is disclosed. The device achieves continuous frequency tunability in a wide range in particular with... | 03/01/2005 |
| 6853257 | PLL circuit including a voltage controlled oscillator and a method for controlling a voltage controlled oscillator A voltage controlled oscillator having a wide oscillation frequency band, desirable carrier-noise characteristic, and desirable linearity of the oscillation frequency relative to a control voltage. The voltage controlled oscillator includes an oscillation unit and a... | 02/08/2005 |
| 6806785 | Oscillator circuit using bonding wires for inductors and having a resonance transformation circuit An oscillator circuit includes an oscillator core having two capacitances, two inductors designed as bonding wires, and a de-attenuation amplifier coupled to the oscillator core. The inductors of the oscillator core, which is preferably embodied to be tunable, are c... | 10/19/2004 |
| 6784754 | VCO resonance tuning Techniques are provided for compensating for variations in capacitance of capacitors used in resonant circuits, particularly varactors used in voltage-controlled oscillators. Indications of actual varactor capacitances are used to determine which of several inductan... | 08/31/2004 |
| 6759915 | Multi-band, voltage-controlled oscillator A multi-band, voltage-controlled oscillator has a switching device that can be certainly be turned on and off. The oscillator includes a negative source generator coupled to an output of a buffer transistor from which an oscillation frequency of an oscillating trans... | 07/06/2004 |
| 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 tuning circuit includes a first inductive element having a ... | 01/27/2004 |
| 6633203 | Method and apparatus for a gated oscillator in digital circuits A gated oscillator is provided for digital circuits. The gated oscillator is achieved by the unconventional use of controlling the operating point of a Van der Pol oscillator. Oscillations are achieved by Van der Pol self-oscillation behavior. The result ... | 10/14/2003 |
| 6597248 | Voltage-controlled oscillator A voltage-controlled oscillator in a phase-locked loop includes an LC oscillator. Control inductors are disposed of in the proximity of oscillator inductors, respectively. The control inductors are connected to a current source. By applying a control curr... | 07/22/2003 |
| 6583677 | Oscillator and an oscillator characteristic adjustment method An oscillator including a circuit board having a dielectric layer therein; an oscillator circuit comprising its components and an inductor element, the components being mounted on a front surface of the circuit board and at least a part of the inductor el... | 06/24/2003 |
| 6563387 | Method and apparatus for synthesizing high-frequency signals for wireless communications A frequency synthesizer is provided with a prescaler 2 and a counter 3, which output a signal having a frequency generated by frequency-dividing an output signal of a VCO 1; a reference frequency divider 5 for frequency-dividing a frequency of a reference... | 05/13/2003 |
| 6522211 | Frequency-switching oscillator and communication apparatus using same A frequency-switching oscillator has an oscillating circuit and a buffer circuit, wherein a matching circuit has a diode. The anode of the diode can be switched to be of a first potential and a second potential which is higher than the first potential. Th... | 02/18/2003 |
| 6437653 | Method and apparatus for providing a variable inductor on a semiconductor chip One embodiment of the present invention provides an inductor with a variable inductance within a semiconductor chip. This inductor includes a primary spiral composed of a conductive material embedded within the semiconductor chip to provide a source of va... | 08/20/2002 |
| 6388535 | Oscillator, and an oscillator characteristic adjustment method A smaller oscillator module enables oscillation frequency to be adjusted from the back after assembly is finished. The oscillator has oscillator circuit components mounted on the front of a circuit board having an internal dielectric layer, a back conduct... | 05/14/2002 |
| 6323735 | Method and apparatus for synthesizing high-frequency signals utilizing on-package oscillator circuit inductors A method and apparatus for synthesizing high-frequency signals that overcomes integration problems while meeting demanding phase noise and other impurity requirements. In one embodiment, on-package oscillator circuit inductors are provided for band select... | 11/27/2001 |
| 6307440 | Oscillating circuit, an oscillator frequency adjusting method, and a tuner In an oscillator circuit employing a pattern coil on a printed-wiring circuit board as a resonator circuit, in order to satisfactorily adjust dispersion in oscillation frequencies, an air-core coil wound by 0.5 turn and less than one turn is provided so a... | 10/23/2001 |
| 6255913 | Variable frequency oscillator circuit A variable frequency oscillator (VFO) circuit having an increased frequency tuning range to selectively obtain operating frequencies above and below a set frequency. The circuit includes a tank inductor connected in parallel with a tank capacitor for prim... | 07/03/2001 |
| 6232847 | Trimmable singleband and tunable multiband integrated oscillator using micro-electromechanical system (MEMS) technology A high-Q precision integrated reversibly trimmable singleband oscillator and tunable multiband oscillator are presented that overcome the problems laser trimming and solid state switches. This is accomplished using micro-electromechanical system (MEMS) te... | 05/15/2001 |
| 6218909 | Multiple frequency band voltage controlled oscillator A radio frequency oscillator containing a means of frequency band selection and a tuning mechanism permitting frequency variation within each of the bands. The oscillator typically consists of a transistor, a frequency determining circuit, one or more vol... | 04/17/2001 |
| 5709811 | Magnetic material for microwave and high-frequency circuit component using the same A magnetic material for microwave, comprising a phase having garnet structure, said phase comprising a component represented by Formula I (A3-a Bia)Bx Oy Formula I where A represents a component com... | 01/20/1998 |
