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| Number | Title | Issue Date |
| 8134416 | Surface acoustic wave driving circuit and oscillator therefor A driving circuit of a surface wave resonator (X1) is described; the resonator comprises a static capacitor (Co) and the driving circuit is adapted to supply a voltage (Vx) to the resonator. The driving circuit comprises reactive means (L3) adapted to ... | 03/13/2012 |
| 8115561 | Lamb-wave resonator and oscillator A Lamb-wave resonator includes: a piezoelectric substrate; an IDT electrode disposed on one principal surface of the piezoelectric substrate, having bus bar electrodes each connecting one ends of a plurality of electrode finger elements, the other ends of the plural... | 02/14/2012 |
| 7936226 | Circuit and method for a wireless accessory of a moblie device The invention relates to a circuit and method for a wireless accessory of a portable computer. The circuit comprises an oscillator circuit, a control circuit connected to the oscillator circuit, and a quenching circuit connected to the oscillator circuit. According ... | 05/03/2011 |
| 7932789 | Frequency adjustable surface acoustic wave oscillator A frequency adjustable surface acoustic wave oscillator uses circuitry in which the phase relationship between the corresponding input and output signals and the voltage applied to or received by transducer fingers is controlled in such a manner that the frequency o... | 04/26/2011 |
| 7847647 | Oscillator circuit with acoustic single-port surface wave resonators An oscillator circuit includes a combination of two frequency-determining elements, designed as single-port surface wave resonators with interdigital converters, and one active electronic circuit. The two single-port surface wave resonators are connected to each oth... | 12/07/2010 |
| 7733190 | Oscillation circuit and oscillator An oscillation circuit includes a cross-coupled circuit having a first active element and a second active element which are differentially connected to each other. The oscillation circuit oscillates in a resonance frequency of a resonator connected between the first... | 06/08/2010 |
| 7642871 | Surface acoustic wave oscillator and method of varying frequency thereof A surface acoustic wave oscillator includes: a cross-coupled circuit including first and second active elements differentially connected to first and second output terminals; first and second surface acoustic wave elements having different resonance frequencies and ... | 01/05/2010 |
| 7564316 | Variable-frequency oscillator incorporating thin-film bulk acoustic resonators Variable-frequency oscillators incorporating thin-film bulk acoustic resonators (FBARs) are described. In one aspect, a variable-frequency oscillator includes a first oscillator circuit and a second oscillator circuit. The first oscillator circuit includes a first f... | 07/21/2009 |
| 7511587 | Oscillator comprising two one-port surface wave resonators The invention relates to an oscillator containing two one-port surface wave resonators as frequency-determining elements. The aim of the invention is to modify known oscillators such that the variable /S21/ for the oscillator frequency, that is adapted according to ... | 03/31/2009 |
| 7372346 | Acoustic resonator A tuneable film bulk acoustic resonator (FBAR) device. The FBAR device includes a bottom electrode, a top electrode and a piezoelectric layer in between the bottom electrode and the top electrode. The piezoelectric layer has a first overlap with the bottom electrode... | 05/13/2008 |
| 7358823 | Programmable capacitors and methods of using the same In a first aspect, a first method of adjusting capacitance of a semiconductor device is provided. The first method includes the steps of (1) providing a transistor including a dielectric material having a dielectric constant of about 3.9 to about 25, wherein the tra... | 04/15/2008 |
| 7328497 | Incremental tuning process for electrical resonators based on mechanical motion A method is provided for adjusting the resonant frequency of a mechanical resonator whose frequency is dependent on the overall resonator thickness. Alternating selective etching is used to remove distinct adjustment layers from a top electrode. One of the electrode... | 02/12/2008 |
| 7301423 | Surface acoustic wave element and manufacturing method thereof A surface acoustic wave (SAW) element including a semiconductor substrate on which a semiconductor wiring region and a SAW region are formed alongside in a same plane, a metal wiring formed in the semiconductor wiring region, an insulating layer including the metal ... | 11/27/2007 |
| 7298224 | Amplifier circuit for an oscillator in a defined oscillating frequency range and oscillator circuit An amplifier circuit for an oscillator in a defined oscillating frequency range includes a plurality of transconductors, wherein at least one transconductor has a positive transconductance, and wherein at least one other transconductor has a negative transconductanc... | 11/20/2007 |
| 7289001 | Dielectric substrate for oscillator An oscillator includes a phase shifter and a power distributor which are disposed in a dielectric substrate comprising a plurality of stacked dielectric layers. The phase shifter comprises a coupler and a reflecting circuit. The dielectric substrate has a first form... | 10/30/2007 |
| 7282834 | Micro electrical mechanical system (MEMS) tuning using focused ion beams A method for tuning an electro-mechanical device such as a MEMS device is disclosed. The method comprises operating a MEMS device in a depressurized system and using FIB micromachining to remove a portion of the MEMS device. Additionally, a method for tuning a plura... | 10/16/2007 |
| 7274274 | Integrable acoustic resonator and method for integrating such resonator An acoustic resonator circuit to be integrated into a semiconductor product including: a resonator comprising first and second resonant frequencies; an inductive resistor tuned to said second resonant frequency so as to cancel the latter and to allow tuning of the r... | 09/25/2007 |
| 7263138 | Q-quenching super-regenerative receiver A super-regenerative receiver uses controlled Q-quenching and may limit the resonant tank circuit amplitude by loading the tank circuit as soon as regenerative oscillation is detected. An amplitude detector is coupled to the regenerative amplifier and controls a Q l... | 08/28/2007 |
| 7245897 | Using an electroacoustic resonator An apparatus in accordance with one embodiment of the present invention may include a local oscillator having an electroacoustic resonator; and zero intermediate frequency signal processing circuitry coupled to the local oscillator. In certain embodiments, the elect... | 07/17/2007 |
| 7230501 | Oscillation circuit and electronic equipment An oscillation circuit comprises a SAW resonator having a pair of reflectors disposed on a piezoelectric substrate and a pair of IDTs which are set up in parallel between the pair of reflectors and which are constituted by teeth-of-a-comb electrodes; an inverter to ... | 06/12/2007 |
| 7227292 | Methods of depositing piezoelectric films This invention relates to methods of depositing piezoelectric films such as in part of a stack including depositing a piezoelectric layer, measuring the thickness of the layer and depositing a further film or films such that the combined thickness is substantially e... | 06/05/2007 |
| 7221232 | Parallel arrangement for saw oscillator components A SAW oscillator is provided that can prevent an increased parasitic capacitance or an increased parasitic inductance even in the high frequency range. The SAW oscillator includes a semiconductor integrated circuit, a SAW device, and a passive component within a pac... | 05/22/2007 |
| 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 steady state oscillation. The resonator includes a film bulk acoustic ... | 05/22/2007 |
| 7218181 | Integrable amplitude-locked loop including an acoustic resonator An amplitude-locked loop (ALL) includes: a comparator circuit having a first input, a second input and an output, said first input receiving an electric reference signal; a loop filter having an input connected to said output of said comparator circuit and having an... | 05/15/2007 |
| 7215214 | Resonator and amplifying oscillator circuit having a high resolution skew-compensated frequency synthesizer integrated on a single substrate An oscillator circuit is provided having an oscillating amplifier circuit connected to a resonator. The oscillator/amplifier and resonator are preferably fabricated on a single die using semiconductor fabrication tools. Included with the circuitry is a temperature s... | 05/08/2007 |
| 7211933 | Voltage controlled oscillator The present invention provides a voltage controlled oscillator comprising an thin film BAW resonator and a variable capacitor element. The thin film BAW resonator includes an anchor section formed on a Si substrate, a lower electrode supported on the anchor section ... | 05/01/2007 |
| 7202753 | Oscillation circuit and radio communication device using the same An power divider and a surface acoustic wave resonator are provided to a feedback path of an amplifier for oscillation. The surface acoustic wave resonator connects an input side of the amplifier and the power divider connects an output side of the amplifier so as t... | 04/10/2007 |
| 7200502 | Dual connection power line parameter analysis method and system A method and apparatus is disclosed for determining the power line parameters of a system. Specifically, there is provided a method comprising perturbing a voltage waveform through a first connection, measuring a characteristic of the perturbation through a second c... | 04/03/2007 |
| 7199674 | Low phase noise, wide tune range saw oscillators and methods of operating the same A two port, single pole SAW resonator is employed for a local oscillator to eliminate the secondary frequency responses of the prior art without adding additional inductances and capacitances within an amplifier stage. The stray capacitance which is seen within the ... | 04/03/2007 |
| 7199504 | Film bulk acoustic resonator filter A ladder-type film bulk acoustic resonator (FBAR) filter comprises two series FBARs and two parallel FBARs. Each FBAR has a top electrode, a bottom electrode, and a piezoelectric layer sandwiched between the top and bottom electrodes. The top electrodes of the two s... | 04/03/2007 |
| 7193354 | Resonator, unit having resonator, oscillator having unit and electronic apparatus having oscillator An electronic apparatus comprises a display portion and a plurality of oscillators, one of which is a quartz crystal oscillator comprising: a quartz crystal oscillating circuit comprising; an amplification circuit and a feedback circuit. For example, the feedback ci... | 03/20/2007 |
| 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 |
| 7170218 | Electronic apparatus with two quartz crystal oscillators utilizing different vibration modes The electronic apparatus comprises a display portion and a quartz crystal oscillator at least, and said electronic apparatus comprises at least two quartz crystal oscillators. Also, each of two quartz crystal oscillators of the at least two oscillators comprises a q... | 01/30/2007 |
| 7157981 | Surface-mounted oscillator A surface-mounted oscillator configured by integrally accommodating an oscillation element, an IC chip, and a circuit element in a surface-mounted package is characterized in that the oscillation element, the IC chip, and the circuit element are arranged in position... | 01/02/2007 |
| 7157980 | Clock converter and electronic apparatus with the same A voltage controlled oscillating means in a clock converter outputs a positive feedback signal for a positive feedback loop from one output terminal of buffer means forming a portion of a positive feedback loop using voltage controlled phase shifting means and outpu... | 01/02/2007 |
| 7145406 | Phase adjusting circuit and oscillator including the same A phase adjusting circuit includes a meandering inductor provided on the surface of a base substrate, and a zero-ohm resistor mounted on two parallel line portions with one parallel line portion provided therebetween. The parallel line portions of the meandering ind... | 12/05/2006 |
| 7126432 | Multi-phase realigned voltage-controlled oscillator and phase-locked loop incorporating the same A multi-phase realigned voltage-controlled oscillator (MRVCO) achieves phase realignment based on charge injection in the VCO stages with the injection amount proportional to the instantaneous phase error between the VCO output clock and a reference clock. The MRVCO... | 10/24/2006 |
| 7071794 | Quartz crystal resonator, unit having resonator, oscillator having unit, electronic apparatus having oscillator, and method for manufacturing electronic apparatus A quartz crystal resonator has a quartz crystal tuning fork base and quartz crystal tuning fork tines connected to the quartz crystal tuning fork base. Each of the quartz crystal tuning fork tines has opposite main surfaces, a groove formed in at least one of the ma... | 07/04/2006 |
| 7057478 | Component functioning with bulk acoustic waves having coupled resonators A component that functions with bulk acoustic waves, particularly a bandpass filter, has an increased number of degrees of design freedom in order to improve the transmission characteristics of the component. The component has BAW resonators coupled acoustically in ... | 06/06/2006 |
| 7057453 | Method and system for reducing parasitic feedback and parasitic resonances in high-gain transimpedance amplifiers Method and system for reducing parasitic feedback and resonances in high-gain transimpedance amplifiers. In a first embodiment of the present invention, a resistive layer is implemented in the gaps of a high-gain transimpedance amplifier's metallic planes. In a seco... | 06/06/2006 |
