Class 331/50 - Cascade or tandem connected

Subclass of Class 331 - Oscillators
Definition: Subject matter wherein two or more oscillators are effectively
No. of patents: 36
Last issue date: 09/23/2008

Number	Title	Issue Date
7427901	Oscillator array, and synchronization method of the same Signals outputted from oscillators (1-1, 1-2, . . . 1-n) are in phase with signals as reflected by band elimination filters (3-1, 3-2, . . . 3-n) at elimination frequencies of the band elimination filters (3...	09/23/2008
7323945	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 outputs, the radio transceiver being programmable and configurable for multiple ra...	01/29/2008
7265598	Narrow ultra wideband pulse generator A circuitry for generating a narrow impulse including an input device coupled to a matching circuitry that is coupled to a step recovery diode (SRD). The input device is configured to receive a succession of digital input signals, each characterized by having high l...	09/04/2007
7161437	Voltage-controlled oscillator and quadrature modulator A ring oscillator of an even number of stages of inverting/summing amplifiers that adds, to an input of each of the amplifiers, a signal from one such of the amplifiers as to be distant by an even number of stages therefrom, to realize a desired oscillation operatio...	01/09/2007
7079611	System and method for synchronizing an asynchronous frequency for use in a digital system A system and method for accurately detecting an asynchronous frequency within a synchronous digital system. The improved system and method preconditions the asynchronous frequency so that it does not introduce additional phase noise at low frequencies within a digit...	07/18/2006
7026880	Quadrature VCO using symmetrical spiral inductors and differential varactors A quadrature VCO includes two cross-coupled differential pairs, two parallel LC tank circuits, two LO units and a plurality of source followers, supplying by a tail current source and a tail capacitor. The LC tank circuit constitutes of symmetrical spiral inductors ...	04/11/2006
6995620	Oscillator having multi-phase complementary outputs An oscillator having multi-phase complementary outputs comprises a first plurality of single ended amplifiers connected in series to form an input and an output and a second plurality of single ended amplifiers connected in series to form an input and an output. The...	02/07/2006
RE38862	Oscillator with two outputs in quadrature An oscillator includes four identical cells each producing a phase shift of 90 degrees. The output signal from one cell is applied to the input of the next cell, and with the cells looping back to themselves. Each cell includes a current amplifier and a parallel ind...	11/01/2005
6960963	Voltage controlled oscillator A cascaded voltage controlled oscillator is described that includes a first oscillator stage having a first oscillator stage first input, a first oscillator stage second input and a first oscillator stage output. A second oscillator stage includes a second oscillato...	11/01/2005
6946921	Method and apparatus for producing high-frequency oscillations A method and apparatus for producing high-frequency oscillations is disclosed. A new resonator architecture minimizes via losses and supports a compact layout of active circuitry. The resonator architecture incorporates dual resonant transmission lines to reduce res...	09/20/2005
6937107	Device and method of quadrature oscillation Briefly, devices and methods for tuning of quadrature oscillators which may be used, for example, in a Complementary Metal-Oxide Semiconductor (CMOS) process. Devices and methods in accordance with some exemplary embodiments of the invention may allow, for example, ...	08/30/2005
6900699	Phase synchronous multiple LC tank oscillator A phase synchronous multiple LC tank oscillator includes a plurality of oscillator stages configured to oscillate synchronously. The phase of each of the plurality of oscillator stages is substantially the same. ...	05/31/2005
6870432	Unilateral coupling for a quadrature voltage controlled oscillator According to some embodiments, unilateral coupling is provided for a quadrature voltage controlled oscillator. For example, a first voltage controlled oscillator may be provided with a 0 degree phase node and a 180 degree phase node A second voltage controlled oscil...	03/22/2005
6850122	Quadrature oscillator and methods thereof A quadrature oscillator includes a master tuned oscillator and two injection-locked slave tuned oscillators. ...	02/01/2005
6751279	Arrangement for clock supply of high bit rate switching network structures The invention is directed to an arrangement for clock supply of a high bit-rate switching network structures in a digital narrowband switching system such as EWSD. A clock frequency signal (CLK2) traditionally generated with a crystal-controlled oscillator (	06/15/2004
6573800	Continuously changing random signal generating arrangement and method In the particular embodiments of the invention described in the specification, a first signal generator produces a signal which changes in cycles having approximately straight line segments between maximum and minimum values at a first rate and a second s...	06/03/2003
6559727	High-frequency low-voltage multiphase voltage-controlled oscillator A voltage controlled oscillator is provided comprising a plurality of delay elements serially connected to form a ring and each element within the plurality of elements includes an input and output. The voltage controlled oscillator also includes a set of...	05/06/2003
6538516	System and method for synchronizing multiple phase-lock loops or other synchronizable oscillators without using a master clock signal A system and method for synchronizing a plurality of synchronizable oscillators are disclosed. The method includes monitoring a respective output signal of each synchronizable oscillator, each output signal having a respective frequency, generating a sync...	03/25/2003
6522209	Oscillator averaging phase shift generator Two oscillators, such as in two pulse width modulator circuits of DC to DC power converters, are maintained in synchronization and at a predetermined phase shift from one another by a circuit incorporating a comparator. A sawtooth signal output from the m...	02/18/2003
6437621	Waveform shaping device A waveform shaping circuit is provided so that the duty factor of clock pulses can be set to 50% with high accuracy even if the clock pulses are of a low voltage and a high frequency. An inverter which receives the clock pulses through an alternating curr...	08/20/2002
6297704	Oscillation circuits featuring coaxial resonators There is a manufacturing limit on how small ceramic coaxial resonators can be produced, which leads to a limit on the frequency of resonance for these resonators. One technique to quadruple the effective frequency of a ceramic coaxial resonator is to coup...	10/02/2001
6124763	Oscillator with two outputs in quadrature An oscillator includes four identical cells each producing a phase shift of 90 degrees. The output signal from one cell is applied to the input of the next cell, and with the cells looping back to themselves. Each cell includes a current amplifier and a p...	09/26/2000
6091306	Circuit configuration with main and subordinate oscillators Parasitic feedback is prevented in a transmitter, a modulator, or a demodulator from having an interfering influence on the circuit section that generates the mixed frequency. The circuit has a main oscillator and a subordinate oscillator connected downst...	07/18/2000
6075419	High speed wide tuning range multi-phase output ring oscillator A ring oscillator comprising: a plurality of sub-feedback loops, each comprising a pair of serially connected inverters and a feedback inverter having its input coupled to the output of the pair of inverters and its output connected to the input of the pa...	06/13/2000
6016081	Tunable oscillator using a reference input frequency A tunable oscillator includes an input for receiving an input signal from a source of precision frequency such as a CMOS quartz crystal oscillator. The tunable oscillator converts the frequency of the input signal to a first current using a frequency to c...	01/18/2000
5889438	Phase-locked oscillation and control circuit with a wavelet filter A phase-locked oscillation circuit, which minimizes phase fluctuation of an output clock signal generated by the phase-locked oscillation circuit, is provided. A wavelet filter performs a wavelet converting operation over phase fluctuations of an input re...	03/30/1999
5592126	Multiphase output oscillator In a multiphase output oscillator a number of serially coupled oscillator circuits is organized in a loop. Each particular oscillator circuit is coupled to its serial successor in the loop, to provide adjustment of the phase of an oscillation signal of th...	01/07/1997
5561399	Cascaded multi-resonator oscillator having high Q-value An apparatus and method are provided for increasing the Q-value of an oscillator so that a net gain in the stability of the oscillators is obtained. In the apparatus and method, a plurality of units, which each include a passive frequency-selective circui...	10/01/1996
5442324	Digital-controlled oscillator Briefly, in accordance with one embodiment of the invention, an electrical circuit comprises: a digital-controlled oscillator. The digital-controlled oscillator includes an edge delay oscillator being adapted to produce digital oscillator pulses in respon...	08/15/1995
5162698	Cascaded relativistic magnetron A cascaded magnetron device has an elongate cathode shank extending along its axis and a series of tubular anode elements placed end to end in a linear cascade surrounding the cathode shank along at least part of its length. Each adjacent pair of anode el...	11/10/1992
4864640	Directly mixing synchronous receiver Directly mixing synchronous receiver having an RF input (1) and a first signal path (S1) which is coupled thereto and which incorporates a first synchronous demodulator (3) and a first low-pass filter (4), and having a carrier regeneration circuit includi...	09/05/1989
4727340	Comb generators A circuit for generating a succession of fast rising voltage pulses comprises an inductor connected between first and second circuit nodes, a step recovery diode connected between a reference potential level and the first circuit node, and a current switc...	02/23/1988
4602220	Variable frequency synthesizer with reduced phase noise A reference signal from a reference signal source is supplied to a frequency transformer and a side band signal generator. The frequency transformer is formed mainly by up-converters and produces a frequency m times as high as the frequency fs ...	07/22/1986
4470023	Coherent array of Josephson oscillators with external bias leads A coherent array of Josephson oscillators is provided. Individual hysteresis-free Josephson junctions are longitudinally arranged in a line and have such a spacing as to substantially eliminate quasiparticle interactions. To provide a common frequency of ...	09/04/1984
4468635	Transmission line biased coherent array of Josephson oscillators A coherent array of Josephson oscillators is provided. Individual hysteresis-free Josephson junctions are longitudinally arranged in a gap of a central conductor in a line and have such a spacing as to substantially eliminate quasiparticle interactions. T...	08/28/1984
4027276	Transmitter for a coded electronic security system The present invention pertains to a transmitter for a coded electronic security system. The transmitter includes a modulator which automatically keys the radio frequency oscillator of the transmitter "on" and "off" to provide a pulse coded signal unique t...	05/31/1977

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Class 331/50 - Cascade or tandem connected