Did You Know...
...that it was melting ice cream that inspired the invention of the outboard motor? It was a lovely August day and Ole Evinrude was rowing his boat to his favorite island picnic spot. As he rowed, he watched his ice cream melt and wished he had a faster way to get to the island. At that moment the idea for the outboard motor was born!
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| Number | Title | Issue Date |
| 8140041 | Tunable capacitive device with linearization technique employed therein One exemplary tunable capacitive device includes a first tunable capacitive element, a first coupling capacitive element, a first coupling resistive element, and a first specific capacitive element. The first tunable capacitive element has a first node coupled to a ... | 03/20/2012 |
| 8078128 | Selectable capacitance circuit A voltage-controlled capacitor and methods for forming the same are described. A mechanical conductor membrane of the voltage-controlled capacitor is movable to and from a first position and a second position. An amount of capacitance can vary with the movement of t... | 12/13/2011 |
| 7881686 | Selectable Capacitance Circuit A voltage-controlled capacitor and methods for forming the same are described. A mechanical conductor membrane of the voltage-controlled capacitor is movable to and from a first position and a second position. An amount of capacitance can vary with the movement of t... | 02/01/2011 |
| 7657242 | Selectable capacitance circuit A voltage-controlled capacitor and methods for forming the same are described. A mechanical conductor membrane of the voltage-controlled capacitor is movable to and from a first position and a second position. An amount of capacitance can vary with the movement of t... | 02/02/2010 |
| 7653371 | Selectable capacitance circuit A voltage-controlled capacitor and methods for forming the same are described. A mechanical conductor membrane of the voltage-controlled capacitor is movable to and from a first position and a second position. An amount of capacitance can vary with the movement of t... | 01/26/2010 |
| 7603096 | Mixer with self-calibrating carrier leakage mechanism An embodiment of a mixer with carrier leakage self-calibrating is disclosed. The mixer comprises a double balanced mixer, a gm stage comprising a first processing unit and a second processing unit, a current duplicating circuit, a capacitor, a controller and a curre... | 10/13/2009 |
| 7353011 | Method and apparatus for operating a PLL for synthesizing high-frequency signals for wireless communications A method and apparatus for synthesizing high-frequency signals, such as wireless communication signals, includes a phase-locked loop (PLL) frequency synthesizer with a variable capacitance voltage controlled oscillator (VCO) that has a discretely variable capacitanc... | 04/01/2008 |
| 7295814 | Antenna switch circuit and antenna switch module An antenna switch module connected to a common antenna for switching the connection of the antenna to a transmission circuit or a receiving circuit in plural transmitting/receiving systems having different passbands, comprising a diplexer circuit comprising a low-pa... | 11/13/2007 |
| 7265711 | High-frequency oscillator, high-frequency transmission-reception apparatus using the same, radar apparatus, and radar-apparatus-equipped vehicle and small boat equipped with the same A high-frequency oscillator that can tune oscillation characteristics is provided. A high-frequency oscillator includes a Gunn diode serving as a high-frequency oscillation element that generates high-frequency signals, a resonator connected to the Gunn diode, a var... | 09/04/2007 |
| 7190237 | Open-loop start-up method for a resonating device A system employing a resonating device and a controller implements a method involving an establishment by the controller of open-loop oscillations of the resonating device at a resonating frequency of the resonating device, and an establishment by the controller of ... | 03/13/2007 |
| 7183880 | Discrete inductor bank and LC filter A discrete inductive-capacitive (LC) filter selects between at least two inductor banks to tune the LC filter. The filter receives an input signal that includes one or more bands of frequencies. A control signal selects a band of frequencies for processing. A first ... | 02/27/2007 |
| 7164900 | Impulse waveform generating apparatus An impulse waveform generating apparatus comprises an oscillator for generating a reference signal having a center frequency in a frequency band of an impulse to generate, a timing matching circuit for shifting a phase of the reference signal by 90 degrees, a freque... | 01/16/2007 |
| 7162216 | Wireless communication system A wireless communication system, which is provided with a PLL circuit having a plurality of oscillators and is capable of processing two or more transmit and receive signal different in frequency band from one another according to the switching between the oscillato... | 01/09/2007 |
| 7120412 | Calibration circuit for VCO A phase-locked loop circuit includes an array of selectable capacitors formed within the phase-locked loop circuit to enable the phase-locked loop circuit to provide a degree of coarse frequency control by adding or removing capacitors and a degree of fine frequency... | 10/10/2006 |
| 7095992 | Phase locked loop calibration A method for calibrating a phase locked loop (PLL) includes an open loop test and a closed loop test. The open loop test includes providing an optimal control input to a controlled oscillator (CO) of the PLL; determining rate of output oscillation of the CO based on... | 08/22/2006 |
| 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 |
| 7079826 | Digitally controlled analog RF filtering in subsampling communication receiver architecture A first periodic voltage waveform (20) is downconverted into a second periodic voltage waveform (35, 36). A plurality of temporally distinct samples (SA1, SA2, . . . ) respectively indicative of areas under corresponding half-cycles of th... | 07/18/2006 |
| 7038552 | Voltage controlled oscillator having improved phase noise A frequency agile voltage controlled oscillator is provided in which amplitude control is performed by digitally controlling the current supplied to the oscillator from a current source (10). The use of digital control means that phase noise performance of th... | 05/02/2006 |
| 7031683 | Apparatus and methods for calibrating signal-processing circuitry A calibration circuitry includes an adjustable capacitor, a voltage generator, a reference voltage generator, and a controller. The reference voltage generator provides a reference voltage. The voltage generator provides a measurement voltage that depends on the cap... | 04/18/2006 |
| 6968168 | Variable oscillator A variable frequency oscillator comprising: an oscillatory circuit for generating a periodic output dependent on the capacitance between a first node and a second node of the circuit, and having a capacitative element connected between the first node and the second ... | 11/22/2005 |
| 6965761 | Controlled oscillator circuitry for synthesizing high-frequency signals and associated method A method and apparatus for synthesizing high-frequency signals, such as wireless communication signals, includes a phase-locked loop (PLL) frequency synthesizer with a variable capacitance voltage controlled oscillator (VCO) that has a discretely variable capacitanc... | 11/15/2005 |
| 6714772 | Wireless communication system A wireless communication system, which is provided with a PLL circuit having a plurality of oscillators and is capable of processing two or more transmit and receive signal different in frequency band from one another according to the switching between the oscillato... | 03/30/2004 |
| 6658244 | Method and circuit for compensation control of offset voltages in a radio receiving circuit integrated in a circuit module Offset voltage compensation in baseband in a radio receiver path is achieved by control and programming signals which are required in any case to set the desired states in the circuit module. For this purpose a sequencer is started which is integrated on ... | 12/02/2003 |
| 6574288 | Method and apparatus for adjusting a digital control word to tune synthesized high-frequency signals for wireless communications A method and apparatus for synthesizing high-frequency signals is disclosed that overcomes integration problem associated with prior implementations while meeting demanding phase noise and other impurity requirements. In one embodiment, a phase-locked loo... | 06/03/2003 |
| 6549764 | Method and apparatus for selecting capacitance amounts to vary the output frequency of a controlled oscillator A method and apparatus for synthesizing high-frequency signals is disclosed that overcomes integration problem associated with prior implementations while meeting demanding phase noise and other impurity requirements. In one embodiment, a phase-locked loo... | 04/15/2003 |
| 6388536 | Method and apparatus for providing coarse and fine tuning control for synthesizing high-frequency signals for wireless communications A method and apparatus for synthesizing high-frequency signals is disclosed that overcomes integration problem associated with prior implementations while meeting demanding phase noise and other impurity requirements. In one embodiment, a phase-locked loo... | 05/14/2002 |
| 6369664 | Voltage controlled oscillator and electronic apparatus using same A voltage controlled oscillator is provided which oscillates in a stable manner at a high frequency and obtains a large variable range of frequency. The oscillator includes a transistor, and distributed-constant line connected to the base of the transisto... | 04/09/2002 |
| 6310927 | First order tuning circuit for a phase-locked loop A first order phase-locked loop includes a tuning circuit which allows phase lock to be quickly reached, and to be maintained during transient situations such as loss of the data signal. Such an improved circuit has a tuning circuit for the voltage contro... | 10/30/2001 |
| 6271731 | Control circuit for programmable frequency synthesizer A frequency synthesizer has a voltage controlled oscillator comprising a voltage controlled capacitor having a first terminal and a second terminal. A positive control voltage is applied to the first terminal of the voltage controlled capacitor and a nega... | 08/07/2001 |
| 6249190 | Differential oscillator A differential oscillator based on a first Colpitts oscillator and a mirror image Colpitts oscillator that is coupled to the first Colpitts oscillator. This differential oscillator outputs differential voltage signals that are about 180 degrees out of pha... | 06/19/2001 |
| 6236843 | Radio terminal device for automatically correcting phase difference between a received signal and an internally generated signal Radio terminal equipment is provided with an oscillator connected to a receiving circuit, a DPLL 16 for detecting and correcting the phase difference between the received frequency and the oscillation frequency of the oscillator, a switch for connecting a... | 05/22/2001 |
| 6226506 | Method and apparatus for eliminating floating voltage nodes within a discreetly variable capacitance used for synthesizing high-frequency signals for wireless communications A method and apparatus for synthesizing high-frequency signals is disclosed that overcomes integration problem associated with prior implementations while meeting demanding phase noise and other impurity requirements. In one embodiment, a phase-locked loo... | 05/01/2001 |
| 6137372 | Method and apparatus for providing coarse and fine tuning control for synthesizing high-frequency signals for wireless communications A method and apparatus for synthesizing high-frequency signals is disclosed that overcomes integration problem associated with prior implementations while meeting demanding phase noise and other impurity requirements. In one embodiment, a phase-locked loo... | 10/24/2000 |
| 6002303 | Oscillator circuit having a differential configuration and method of forming same An oscillator circuit (100) provides improved noise immunity by utilizing a differential common base configuration. The oscillator includes a differential transistor pair (102, 104) having common bases (110) coupled through an AC ground (108) and emitters... | 12/14/1999 |
| 5991605 | Method and circuit for creating a modulated signal in a transceiver In the method and circuit for creating a modulated signal, one input signal of a phase comparator (509) of a phase-locked frequency synthesizer is an offset frequency (f2), which is created from an adjustable oscillator's (511) output signal (f... | 11/23/1999 |
| 5787342 | Receiver In a receiver of the present invention, a local oscillator frequency, used as a basis for a reception unit to demodulate a received signal, is generated by a local oscillator based on a reference frequency, which is generated by a voltage-controlled oscil... | 07/28/1998 |
| 5600680 | High frequency receiving apparatus A high frequency television signal receiving apparatus providing excellent linear detection of output characteristics by improving the phase characteristic of the picture synchronous detector. A variable capacitive element is equivalently connected in par... | 02/04/1997 |
| 5532651 | Tunable voltage controlled oscillator having microstrip resonator with cuts for better tuning An oscillator (100) includes a resonator (218) having a mirco-strip (217). The micro-strip (217) couples an inductive component (221) to a capacitive portion (219). To tune the oscillator (100), a number of cuts are made on the pad (221) in order to restr... | 07/02/1996 |
| 5493715 | Multi-range voltage controlled resonant circuit A voltage controlled tunable resonant circuit (100) has at least two resonant frequency ranges and reduced self modulation, and includes a resonant element (120), a variable reactance element (130), and a first voltage variable capacitor (VVC) (150). The ... | 02/20/1996 |
| 5486796 | Oscillator circuit for receiving a wide frequency band signal An oscillator provided with an oscillation circuit provided with two oscillation transistors comprising a differential pair and a resonance circuit connected in common to the bases of the oscillation transistors. The bases of the oscillation transistors a... | 01/23/1996 |
