Voltage-controlled oscillator To provide a provide a voltage-controlled oscillator capable of controlling the threshold voltage of a MOS transistor independently of a temperature compensation control signal and an ext...
2
200610164076
Synthesizer module A synthesizer module for connecting a filter (4) for removing a reference signal between a grounding pattern region (7) of a PLL circuit and a wide-field grounding pattern region (11) to ...
3
200610169328
Voltage-controlled oscillator, transmitter and receiver A voltage-controlled oscillator of the invention includes Wa first variable-capacity element, a resonance circuit whose resonance frequency changes in accordance with a control voltage ap...
4
200610143645
High-frequency oscillator A high-frequency oscillator includes a high-frequency oscillation element having a magnetization pinned layer whose magnetization direction is pinned substantially in one direction, an os...
5
200610032530
Automobile velocity measuring apparatus The invention discloses automobile speed measuring apparatus. It includes two opposite adjusting mechanisms, two pairs of photoelectric sensors and control systems. Length adjusting sleev...
High frequency colpitts oscillation circuit A high frequency Colpitts oscillation circuit, comprises: a Colpitts oscillation circuit; and a collector grounded amplifier circuit, wherein an output terminal of the Colpitts oscillatio...
Frequency divider adapted to optical fiber top The invention discloses a frequency dividing device used for the optical fibre gyro which is made up of the FPGA processor slug, the frequency dividing producer and the crystal oscillator...
12
200610154179
Quadrature voltage controlled oscillator In a quadrature voltage controlled oscillator, a first oscillator includes a first resonant circuit for generating a preset first resonant frequency and a first pair of cross-coupled tran...
Voltage control oscillator and voltage control oscillator unit A voltage control oscillator that is provided to suitably receive digital broadcasting and is produced at low costs includes: a resonance circuit that includes variable capacitors, each h...
15
200610152109
Oscillatory circuit having two oscillators An oscillatory circuit. The oscillatory circuit includes a first oscillator, a second oscillator, and a mixer circuit. The first oscillator is configured to generate a first oscillating s...
16
200610153825
Voltage controlled oscillator circuitry and method Voltage controlled oscillator (VCO) circuitry includes LC tank or ring VCO circuitry and frequency divider circuitry that divides the frequency output by the oscillator circuitry by a sel...
Crystal oscillator A crystal oscillator that outputs an oscillation output signal of an oscillator circuit oscillated by a crystal resonator as a resonation source via a buffer circuit, includes: a pluralit...
Integrated circuit package with glass layer and oscillator An integrated circuit (IC) package comprises an IC wafer and an annealed glass paste (AGP) layer that is arranged adjacent to the IC wafer. A molding material encapsulates at least part o...
Low-noise frequency fine-tuning Circuits, methods and apparatus that provide low-noise and high-resolution electronic circuit tuning. An exemplary embodiment of the present invention adjusts a capacitance value by pulse...
23
200610099599
Low-noise high-stability crystal oscillator Circuits, methods, and apparatus that provide low-noise, high-stability crystal oscillators having controlled-amplitude differential output signals and DC level control. A crystal oscilla...
Integrated quartz oscillator circuit The invention provides an integrated quartz oscillator circuit is disclosed having a capacitive voltage divider, which has a first capacitor and a second capacitor, as well as having a fi...
26
200610084291
Electric circuit for generating reference signal
In a circuit arrangement for generation of a reference signal with an oscillation generator, a phase-controlled filter and a frequency multiplier are arranged downstream from the oscilla...
27
200610085015
Quadrature phase oscillator using complex coefficient filter
A quadrature phase oscillator in a Radio Frequency (RF) transceiver Integrated Circuit (IC) is provided. The quadrature phase oscillator includes a voltage controlled oscillator and a fi...
28
200610087936
Crystal oscillation circuit
A crystal oscillation circuit can correctly suppress the resonance of a B mode, thereby correctly excite the resonance of a C mode. Since the crystal oscillation circuit uses a quartz os...
29
200610144433
Generation of low-frequency clock A first and a second resonator are fabricated monolithically adjacent to one another. The first resonator is the reference resonator. The resonant frequency of the second resonator is off...
Oscillation circuit
An oscillation circuit for generating two oscillation signals having a phase difference of 90 DEG by using an LC oscillator has a disadvantage for integration. Therefore, a differential...
32
200610011680
Multichannel synchronous sinusoidal signal generator
A sine signal generator of multipath synchronization is composed of clock source synthesized directly by digit, waveform storage, interface control circuit, controller and multiple D/A c...
Piezoelectric vibration circuit
The invention relates to a piezoelectric oscillation circuit which can obtain stable vibration in wider power voltage range and adjust the oscillation output amplitude. Wherein, said cir...
CMOS digital control LC oscillator on chip
This invention relates to a design technology for chips of T-R devices of the wireless communication system characterizing in applying a double-mode step-forward method composed of an te...
37
200610066098
Constant temperature crystal oscillator
A constant temperature crystal oscillator includes on a circuit substrate: a surface-mount crystal resonator which is provided with two crystal terminals as mount terminals and a dummy t...
38
200610065994
Highly stable piezoelectric oscillator
There provide a highly stable piezoelectric oscillator, improving reliability by increasing holding stability when a printed board supporting a piezoelectric vibrator is joined onto a ba...
39
200610039203
Sine-wave generator with high precise frequency
This invention relates to a sine wave generator based on a general switch capacitance filter integrated chip, which utilizes an integrated band-pass switch capacitance filter, an outside...
40
200610065053
Piezoelectric oscillator
A piezoelectric oscillator includes an inverter amplifier, a first load impedance constituting together with the inverter amplifier a connection circuit that is inserted between the powe...
41
200610065290
Piezoelectric vibration piece and piezoelectric device
A piezoelectric vibration piece includes a base made of a piezoelectric material; a plurality of vibration arms which is integrally formed with the base and extends in parallel; elongate...
42
200610043369
High precision temperature compensation crystal oscillator
The present invention refers to high precision thermal compensation crystal oscillator, belonging to electronic device. It contains crystal oscillator, inverter, pressing control capacit...
43
200610054962
Mos varactor and voltage-controlled oscillator using the same
Provided is a MOS varactor in which oscillation frequency variation is small and variation in a capacitance changing voltage is small, and a voltage-controlled oscillator using the MOS v...
44
200610056897
Temperature-compensated piezoelectric oscillator
To enhance the compensation accuracy by such a means that a compensation capacity curve of a temperature compensation circuit is made close to an ideal three-dimensional function, by uti...
45
200610067889
Oscillating circuit
An oscillating circuit includes an oscillating transistor 21 in which the collector or the base is grounded in a high-frequency manner, and a bias resistor 27 connecting the emitter of t...
46
200680000084
Uwb short pulse radar A transmission unit emits a short pulse wave satisfying a predetermined spectrum mask from an antenna to a space. A reception unit receives a reflected wave of the short pulse wave from a...
47
200610004428
Double-frequency-band voltage controlling oscillation circuit
A resonance circuit is interposed between a base and a collector of an oscillating transistor and is configured such that a resonance frequency is switched in correspondence with two dif...
48
200610007893
Oscillating buffer
An oscillating buffer is coupled to an oscillating source, in parallel, for providing a predetermined waveform at a predetermined frequency for a core circuit with a plurality of MOS tra...
49
200680000079
Radar oscillator A radar oscillator includes an oscillation unit and a first and a second switch circuit so as to intermittently output an oscillation signal according to a pulse signal indicating the rad...
50
200680000129
Short pulse radar and control method thereof A pair pulse generator generates a pair of pulses including a first pulse of predetermined width and a second pulse of the same width as the first pulse delayed from the first pulse each ...
51
200610033188
Sinusoidal reference circuit
The invention relates to a sine reference circuit, whose output voltage and the frequency are adjustable, which can be used in bell current module. The invention comprises: an error adju...
52
200610004551
Circuit substrate structure and circuit apparatus
A circuit substrate structure, wherein a first wiring layer is provided with a first inductor and a second inductor. A dielectric layer is provided with a first via and a second via elec...
53
200510122834
Voltage controlled oscillator
The invention is related to circuit for starting oscillations when multiple voltage controlled oscillators are switched. Shortening time for starting oscillations of voltage controlled o...
CR oscillation circuit and electronic device It is preferable to increase the selection scope of oscillation frequency adjustment means. In a CR oscillation circuit (100), a first oscillation capacitor (C1) and a second oscillation ...
58
200510101029
Printing circuit board The invention comprises: a signal layer, a power layer located under the signal layer and a ground layer. There is a crystal oscillator, a bonding pad of clock generator and two bounding ...
Direct digital frequency synthesizer of shaped frequency noise The invention relates to a frequency noise reforming direct digital frequency synthesizer, which can raise the dynamic feature of the output signal. It consists of the frequency reformer ...
Digital current control oscillator This invention relates to a digital current control frequency generator including three parts: a voltage-current converter outputting related current after inputting voltages, a control c...
Low voltage annular oscillator with almost constant delay time Methods and circuits for chain ring oscillators having a constant delay time over variations of temperature and variations of semiconductor manufacturing process while requiring low opera...
65
200520092427
Intelligent type signal generator The utility model discloses an intelligent signal generator, comprising a signal generating device, a remote control signal detector, a differential circuit, a monostable trigger and an e...
Oscillator In the inventive oscillator, field effect transistors (12,13) included therein as amplifying elements are ones of embedded channel type, each of which has a body region formed on a semico...
68
200510077719
Surface mounting crystal oscillator The present invention relates to a surface mounting crystal oscillator in which an IC chip, a crystal element, and a circuit component are connected together by wire bonding and are house...
Symmetrical voltage controlled oscillator A system is provided to improve frequency stability and system linearity in voltage controlled oscillators. A symmetrical voltage controlled oscillator system embodying the present invent...
72
200510077044
Symmetrical voltage controlled oscillator A VCO system embodying the features of the present invention includes a frequency tuning circuit, a modulation circuit coupled in a parallel fashion with the frequency tuning circuit, a b...
73
200510021041
Crystal oscillator of analog temperature compensation
Temperature compensating crystal oscillator includes three parts: TEMP sensor, compensation voltage generator and voltage controlled crystal oscillator. Compensation voltage generator co...
74
200510077849
Piezoelectric oscillator and electronic device
A piezoelectric oscillator includes: a package having a package base, a bottom surface, a conductive cap that seals airtightly an interior space of the package base, and a terminal to pe...
75
200510075201
Crystal oscillator
The present invention relates to a crystal oscillator that is provided with a crystal element; a main surface electrode configured of a first underlayer formed on each of two main surfac...
76
200510072957
Trigonometric wave generation circuit using series expansion The invention relates to a trigonometric genarating circuit which employs progression expanding and the object is to provide a technology for reducing a circuit scale which generates a tr...
77
200510070833
Constant temperature type crystal oscillator The present invention is one where, in a lead wire led-out type crystal oscillator of constant temperature type for high stability, comprising: a heat supply body that supplies heat to a ...
78
200510065298
Programmable frequency divider with symmetrical output
A programmable frequency divider circuit with symmetrical output is disclosed. The frequency divider includes a non-symmetrical LFSR based component operated in series with a symmetrical...
79
200580013639
Pulling-free LO generation system and method A system and method for generating an LO signal for an RF transmitter is provided that eliminates the risk of LO-pulling. A filtering technique is employed to select the desired harmonic ...
80
200580011960
Oscillation circuit and electronic equipment It is possible to provide an oscillation circuit capable of switching over the frequency band without discontinuity of the output phase and maintaining preferable frequency accuracy and f...
81
200510033996
Frequency multiplier circuit
The invention relates to a frequency multiplier circuit which comprises an input end, a multiplier, a first voltage source, a second voltage source and an output end, wherein the input e...
82
200580011081
A circuit and method for controlling an oscillation loop The circuit for controlling the oscillation frequency of an oscillation loop (66) has among others the following components - a first tunable capacitor unit (80) for providing a selectabl...
83
200510059992
Ring oscillator for compensating voltage source offset
A ring shaped oscillator compensating voltage source offset consists of a current source control unit for receiving a power supply voltage and outputting a current source control signal,...
Acoustic resonator and filter
The area of an opening C of a cavity 31 is equal to or greater than the area of a horizontal cross section D of a vibrating section 10. The vibrating section 10 is placed on a support se...
86
200510063661
Oscillating circuit having a noise reduction circuit
An oscillating circuit having a noise reduction circuit is disclosed. The noise reduction circuit is coupled to the current source for the oscillating circuit. The noise reduction circui...
Symmetrized voltage controlled oscillator system
A symmetrical voltage controlled oscillator (VCO) system according to the embodiments of the present invention comprises a frequency tuning circuit containing one or more varactors for r...
89
200510062596
Varactor-based ring oscillator
A varactor-based ring oscillator to produce an output signal and method therefore are disclosed. The ring oscillator includes a first phase shift circuit having a first pole. The ring os...
Voltage control oscillator
An LC circuit including an inductor and a pair of varactor elements is provided in an LC-VCO. This LC circuit outputs complementary alternating current signals from a pair of output term...
Voltage control oscillator A negative capacitance circuit having impedance frequency characteristic which is inverse with respect to the normal capacitance is connected to a variable capacitance element changing ca...
94
200520055838
Programmable inversion type sine wave producer The utility model relates to a programmable inversion type sine wave producer, which includes sine wave switching circuit (3). It is particular to include the stated sine wave switching c...
Oscillator frequency adjusting method
An oscillator frequency regulation method includes following steps: providing an oscillator having connected a capacitor and a transmission line, said transmission line having an open en...
97
200580012344
Programmable radio transceiver 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 out...
98
200580004967
Piezo-oscillator and manufacturing method thereof Provided are a small-size piezo-oscillator using a general-purpose piezoelectric transducer and reducing the manufacturing cost and manufacturing method thereof. The piezo-oscillator incl...
