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WO/2004/062083A1 |
According to one exemplary embodiment, a VCO core circuit is connected across a first node and a second node. The anode of a first varactor is connected to the first node while the anode of a second varactor is connected to the second no...
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WO/2004/059831A1 |
The invention relates to an oscillator, characterised in comprising a monobloc dielectric resonator in the form of a straight cylindrical section, hollowed in the mid-section thereof along the chords of the straight section thereof, such...
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WO/2004/054089A1 |
A piezoelectric oscillator capable of being downsized by reducing a plane size. In a laminate lead frame (50) comprising two lead frames (30, 40), a lead (32) for connection with a piezoelectric oscillation element (10) is formed on an u...
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WO/2004/054088A2 |
Method for driving an array of micro-electro mechanical system (MEMS) devices, said array providing a plurality of logical or memory states at it output, wherein the MEMS devices are given a characteristic hysteresis curve differing from...
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WO/2004/054091A1 |
A negative resistance circuit having a transistor and a plurality of distributed constant lines respectively connected to the three terminals of the transistor further comprises an inductive element or a capacitive element connected betw...
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WO/2004/051842A1 |
The invention relates to a transmitting station that is comprised of an alignment-free HF oscillator for the direct transmission of binary-coded data. Due to the short build-up time, one binary state can be transmitted by completely swit...
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WO/2004/051841A1 |
The present invention provides a current controlled oscillator comprising a first section providing a first differential output and a second section providing a second differential output. A loading structure comprised of resistive and r...
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WO/2004/051761A2 |
Piezoelectric devices made from lightest isotope enriched materials with significantly improved thermal conductivity, frequency stability and phase noise qualities. The isotopically enriched materials may consist of a single crystal and ...
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WO/2004/049568A1 |
The invention relates to a method and an arrangement for generating cyclic pulses. A first differential pair includes an input for a first unipolar pulse, and a second input for a second unipolar pulse, the first unipolar pulse and the s...
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WO/2004/045101A1 |
A radio frequency transceiver (fig.1,1,11) of the type having at least one radio frequency integrated chip (1), a reference oscillator (fig. 2,80) and a phase-locked Oscillator (fig. 2,82) , utilizes non-crystal resonator structures in p...
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WO/2004/045063A1 |
Disclosed is a device for reducing the phase noise of a signal (Sin) emitted by a quasi-periodic source having a basic frequency f0. Said device is provided with a superconducting circuit comprising an active line for transmitting voltag...
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WO/2004/045062A1 |
A measured waveform of correction voltage required for different temperatures is divided by an interval of the smallest resolution of a D/A converter. From each of the division points of the measured waveform, a voltage digital value rep...
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WO/2004/042913A1 |
A self-biased voltage controlled oscillator (VCO) (10) that includes a VCO core (12) including a plurality of switching transistors (18, 20, 22, 24), a resonant tank circuit (14) operatively coupled to the VCO core (12), a current source...
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WO/2004/042914A1 |
A crystal oscillator and a semiconductor device wherein spurious oscillation can be reduced are disclosed. The crystal oscillator comprises a crystal vibrator (52) whose one end is connected to ground, capacitors (33, 34) which constitut...
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WO/2004/042915A1 |
The invention relates to a microwave oscillator comprising a hollow conductor (20), an oscillator (16), which is mounted on a heat sink (14) and which projects into the hollow conductor (20), and comprising a printed circuit board (12) f...
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WO/2004/040268A1 |
The present invention relates to a piezoelectric resonator system comprising a plurality of piezoelectric resonator sensors C', C'. Each sensor C', C' comprises an oscillator circuit 29', 29' which is surrounded by its own individual con...
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WO/2004/038909A2 |
The invention concerns a method for stabilizing the operation of a voltage-controlled oscillator (VCO) monitored by a phase locked loop (PLL), the voltage-controlled oscillator delivering a RF signal and receiving via at least one distur...
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WO/2004/036735A1 |
An oscillator circuit includes a tank circuit, first and second oscillator transistors, and a gain-cell tuning inductor. The tank circuit includes first and second ports, and is configured to resonate at one or more predefined frequencie...
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WO/2004/036733A2 |
A method and system for fast wakeup of a high-Q oscillator (300) that includes a resonating element (304), preferably a crystal resonator (304), and an amplifier (310). The method comprises connecting the resonating element (304) to a fa...
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WO/2004/036751A2 |
An integrated voltage controlled oscillator is provided. The integrated voltage controlled oscillator includes a first slab inductor having two ends and a second slab inductor having two ends. A first oscillator core is connected to a fi...
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WO/2004/036734A2 |
A pulse generator comprising a series coupling of delay elements (D1, D2, D3, D4, D5) every two consecutive delay elements (D1, D2, D3, D4, D5) being coupled at a plurality of coupling points (A1, A2, A3, A4), the series coupling of dela...
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WO/2004/032327A1 |
Techniques are described for producing a signal (120) having a desired frequency. The desired frequency can be produced to a very high precision, even when the desired frequency is very high. The techniques, in one example, represent an ...
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WO/2004/029735A1 |
An oscillator (601) capable of oscillation-starting at low voltage is used, an oscillation signal (S1) of this oscillator (601) is amplified via a waveform shaping unit (603) for feeding to a boosting control unit (105). Immediately afte...
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WO/2004/027979A1 |
A quartz crystal oscillator comprises a balanced circuit with a quartz crystal resonator device connected in series resonance across a balanced, low impedance node within a sustaining amplifier. A phase modulator such as a quadrature mod...
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WO/2004/027977A1 |
Voltage controlled oscillator comprising a LC tank circuit (L, C, R) coupled to modulator means (2) and characterized in that the modulator means (2) are coupled to amplifier means (1) via an adder (3) for generating a quadrature periodi...
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WO/2004/027978A1 |
An LC oscillator (1) comprises a cross-coupled PMOS transistor pair (Ma, Mb) coupled to a pair of capacitors (Cva, Cvb) and a pair of inductances (La, Lb). To enhance the signal amplification of the oscillator, a pair of auxiliary transi...
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WO/2004/025825A1 |
The present invention comprises an integral triangular voltage waveform generator (170, 180) and triangular to pseudo-sinusoidal current waveform converter (170, 180). The outputs of the present invention are preferably differential (130...
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WO/2004/025824A1 |
A circuit for generating a component of n-th degree includes: six differential amplifiers (15A to 15F) having a pair of input terminals supplied with a common linear input signal and a constant level signal of a predetermined level, outp...
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WO/2004/025833A2 |
A feedback oscillator device (10) formed with an integrated circuit having a semiconductor material substrate on a ground plane. The circuit has an amplifier (17) having an input and an output is provided at least in part on said semicon...
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WO/2004/023641A1 |
A balanced crystal oscillator circuit comprising: a piezoelectric element Xtal (207; 215; 222,221; 313); a first oscillator subcircuit (202; 210; 218; 302) incorporating a transistor (204;212;220;304); and a second oscillator subcircuit ...
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WO/2004/021575A1 |
An oscillating part (11) generates a signal of a frequency n·f that is n times a target frequency f. A control voltage producing circuit (21) compares in phase a signal obtained by frequency-dividing the signal generated by the oscillat...
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WO/2004/021572A2 |
A multi-band local oscillator for generating an output oscillator signal of a desired frequency is implemented with a single voltage controlled oscillator (22) providing an input oscillator signal and a switch divider block (20). The out...
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WO/2004/019496A1 |
A conventional waveform generation circuit needs to increase the D/A converter bit count and the sampling rate in order to increase the accuracy of the waveform rectification, which in turn increases the cost. To solve this problem, as a...
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WO/2004/019192A2 |
A system and integrated circuit (die) including a clock generator that includes an on-chip inductor and uses the inherent capacitance of the load to generate a sinusoidal clock signal. The inductor is connected between a current source a...
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WO/2004/015852A2 |
A voltage-controlled oscillator comprising a LC tank circuit (L1, L2, VD1, VD2) coupled to a pair of transistors (T2, T3) and crossed-coupled to a pair of emitter follower transistors (T0, T4) each transistor having a collector, an emitt...
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WO/2004/015870A1 |
The invention relates to the field of electronics and more particularly to the tuning and injection locking of voltage controlled oscillators (VCOs). An improved injection locking circuit is provided which allows the VCO to injection loc...
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WO/2004/015856A1 |
There is provided a VCO having a modulation function capable of easily constituting a correction circuit which can obtain a predetermined modulation degree even when element irregularities are present. A modulation current terminal is co...
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WO/2004/013968A1 |
A digital VCO includes an A/D converter (11) for converting a given analog signal to a digital signal, a quartz oscillation circuit (12) having a quartz oscillator for generating a signal having a predetermined frequency, and a variable ...
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WO/2004/013954A1 |
In a local oscillator for a tuning arrangement for both TV and FM signals there is substantial risk of parasitic oscillation. A special provision is disclosed for effectively reducing this risk. The special provision is a connection of a...
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WO/2004/012328A1 |
An oscillator assembly is described, comprising an oscillator with a resonant circuit and a buffer amplifier isolating the oscillator from the load, in which the input to the buffer amplifier is taken from a high impedance point on said ...
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WO/2004/010444A1 |
The invention relates to multi-band resonator circuits with inductors and capacitors. These resonator circuits are realized on integrated circuits. The inductors are realized according to the invention within one single coil comprising a...
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WO/2004/010571A1 |
A wideband Voltage Controlled Oscillator (VCO) uses a resonant circuit tunable over a wide range of resonant frequencies. The resonant circuit includes voltage variable elements such that the resonant frequency, and thus the frequency of...
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WO/2004/008638A1 |
A signaling circuit having reduced parasitic capacitance. The signaling circuit includes a plurality of driver circuits (370) each having an output coupled to a first output node, and a plurality of select circuits each having an output ...
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WO/2004/008639A2 |
A current-controlled ring oscillator (300) uses a single controlled-current supply for supplying current to each inversion stage (110) of the ring oscillator (300). The controlled current is dynamically adjusted to compensate for variati...
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WO2003028106B1 |
Circuits for processing radio frequency ("RF") and microwave signals are fabricated using field effect transistors ("FETs") that have one or more strained channel layers disposed on one or more planarized substrate layers. FETs having su...
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WO/2004/006425A1 |
The amplitude, phase and frequency of a sine wave to be generated is calculated from a feature s1 delivered to feature measuring means (2) and sent to initial setting means (3). The initial setting means (3) calculates the first two poin...
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WO/2004/004113A1 |
Disclosed is a Wien-Robinson oscillator in which a negative feedback branch and a positive feedback branch are arranged between the output of an operational amplifier and the reference potential. Said negative feedback branch comprises t...
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WO/2004/001954A2 |
A frequency-adjustable oscillator (10) suitable for digital signal clock synchronization comprises a SAW oscillator circuit (12) for generating an analog controlled-frequency signal and a sinewave-to-logic level translator circuit (14, 1...
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WO/2003/107536A2 |
A system for generating in-phase and quadrature phase signals is provided. The system includes a first and a second differential output, such as from a sinusoidal oscillator. A first injection-locked frequency divider, such as one that u...
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WO/2003/105346A1 |
A voltage-controlled oscillator (600) including an active oscillator circuit (610), an inductor, and capacitive circuits is disclosed. The capacitive circuits are selectively turned on and off to control the frequency of the voltage-cont...
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