Bizarre Patents
An enclosure for small animals which is wearable on the front or back of an animate being.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8170517 | Receiving apparatus A receiving apparatus comprising: a first mixing unit to output first and second mixed signals each having a first frequency that is a frequency difference between a received signal and a first local oscillator signal, the first and second mixed signals having phase... | 05/01/2012 |
| 8165550 | Local oscillator, receiver, and electronic device A broad oscillation frequency range and good phase noise characteristic are achievable simultaneously by an oscillation circuit and a resonance circuit connected to the oscillation circuit. The resonance circuit includes an inductor element connected to the oscillat... | 04/24/2012 |
| 8160529 | Adaptive FM/AM radio architecture A radio frequency (RF) receiver includes a local oscillator (LO) module that receives a control signal and that generates a LO signal at a LO frequency that is based on the control signal, a LO mixer module that generates an intermediate frequency (IF) signal based ... | 04/17/2012 |
| 8107913 | Method and apparatus for a digital regulated local oscillation (LO) buffer in radio frequency circuits A digital regulated Local Oscillator (LO) buffer receives an unregulated LO signal from a local oscillator to create a regulated LO signal. Embodiments include not only the digital regulated LO buffer, but also a transceiver and/or a receiver including at least one ... | 01/31/2012 |
| 8064860 | Method and apparatus for adjusting reference oscillator frequency in a mobile wireless device A method and apparatus for using a conventional oscillator in a cellular telephone transceiver as a source of a reference signal for a GPS receiver. In one embodiment, the method comprises using a voltage-controlled oscillator (“VCXO”) within a cellular telephon... | 11/22/2011 |
| 8060044 | 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... | 11/15/2011 |
| 8036619 | Oscillator having controllable bias modes and power consumption Disclosed is an oscillator circuit (10) for use in a local oscillator of an RF communications device (100) that communicates over an RF channel. The oscillator circuit includes an oscillator transistor coupled to a power supply voltage (Vcc) through a ... | 10/11/2011 |
| 7991372 | Receiver and electronic apparatus using the same A radio receiver for diversity has a first receiving unit and a second receiving unit for diversity-receiving a signal of a radio frequency. The first receiving unit has a first mixer for converting the received signal of the radio frequency into an IF signal of a f... | 08/02/2011 |
| 7983644 | Apparatus and method for local oscillator calibration in mixer circuits An apparatus and method for local oscillator calibration compensates for filter passband variation in a mixer circuit, such as a receiver circuit. The receiver includes at least a mixer circuit and a filter coupled to the output of the mixer. During operation, the m... | 07/19/2011 |
| 7945228 | Receiver and electronic apparatus using the same A receiver has a first semiconductor chip and second semiconductor chip for receiving signals of a first radio frequency band, and a communication unit for performing communication using signals of a second radio frequency band. A second mixing unit in the second se... | 05/17/2011 |
| 7805122 | Local oscillator with non-harmonic ratio between oscillator and RF frequencies using digital mixing and weighting functions A novel and useful apparatus for and method of local oscillator (LO) generation with non-integer multiplication ratio between the local oscillator and RF frequencies. The LO generation schemes presented are operative to generate I and Q square waves at a designated ... | 09/28/2010 |
| 7747236 | Method and apparatus for estimating local oscillator frequency for GPS receivers The present invention is a method and apparatus that produces an estimate of the local oscillator (LO) frequency error using an external reference signal. The error estimate can be used for LO calibration, correction and other purposes. The present invention does no... | 06/29/2010 |
| 7711338 | Frequency offset correction based on the presence or absence of a received signal The present invention relates to a method for controlling a frequency in a receiver, in particular in a receiver used in a telecommunications system. To keep precise clock frequency even when the synchronization signal from base-station is missing the method compris... | 05/04/2010 |
| 7711339 | Method and apparatus for producing a local oscillator signal Methods and apparatus for providing a local oscillator (LO) signal are disclosed. An example apparatus includes a circuit for providing the LO signal. The circuit includes a voltage controlled oscillator (VCO) that is configured to operate at a first supply voltage.... | 05/04/2010 |
| 7689190 | Controlling the frequency of an oscillator A technique includes generating an analog voltage to control a frequency for an oscillator. The analog signal is converted into a digital signal, and the frequency is controlled in response to the digital signal. ... | 03/30/2010 |
| 7653370 | Offset signal phasing for a multiple frequency source system A tunable multiple frequency source system employing offset signal phasing includes a first frequency source, a phase delay element, and a second frequency source configured to operate concurrently with the first frequency source. The first frequency source includes... | 01/26/2010 |
| 7634245 | Receiver, in particular for mobile radio A receiver, in particular for mobile radio, includes a receiver branch with a mixer, downstream of an analog/digital converter. A reference generator generates a reference clock, which is fed to the converters or PLL synthesizers of the mixer by integral multiplicat... | 12/15/2009 |
| 7630697 | Local oscillator control in radio receivers A radio receiver measures a signal quality metric and modifies attributes of a local oscillator signal in response thereto. A digital signal processor may be used to determine a signal-to-noise-plus-distortion ratio (SNDR) of a baseband signal, and the overlap of tw... | 12/08/2009 |
| 7616935 | Method and apparatus for matching receiver carrier frequency A carrier recovery method and apparatus using multiple stages of carrier frequency recovery are disclosed. A receiver uses multiple frequency generation sources to generate carrier signals used to downconvert a received signal. An analog frequency reference having a... | 11/10/2009 |
| 7574185 | Method and apparatus for generating a phase-locked output signal A method and apparatus for generating a phase-locked output signal includes generating an intermediate signal phase locked to an input signal by frequency dividing the intermediate signal by a temporally-varying divide ratio sequence to generate a first feedback sig... | 08/11/2009 |
| 7522898 | High frequency synthesizer circuits and methods Embodiments of the present invention include a frequency synthesizer comprising a first plurality of dividers receiving a first signal having a first frequency and generating a first plurality of divided signals and a frequency combination network including a plural... | 04/21/2009 |
| 7457599 | Frequency transceiver for controlling intermediate frequency There is provided a frequency transceiver for automatically controlling a TX/RX IF signal in a radar or a communication system, which transmits/receives an RF signal. The frequency transceiver includes a local oscillator for oscillating a VHF proportional to a VHF o... | 11/25/2008 |
| 7436903 | Multicarrier transmitter and method for transmitting multiple data streams with cyclic delay diversity A multicarrier transmitter may transmit cyclically delayed linear combinations of two or more data streams with three or more antennas. In some embodiments, the multicarrier transmitter may transmit cyclically delayed linear combinations of three data streams with f... | 10/14/2008 |
| 7437134 | Tuner arrangement A tuner arrangement is provided comprising one or more tuners. Each tuner has two or more frequency changers, each comprising a mixer and a local oscillator. A controller controls the local oscillators in response to receipt of a channel select request. The controll... | 10/14/2008 |
| 7433395 | Reliable multicarrier communication in the presence of timing phase error A method, system and apparatus for reliable multicarrier communication in the presence of timing phase error is disclosed. Phase noise due to a sampling-time phase mismatch between a transmitter device and a receiver device is measured in a signal. A Gaussian noise ... | 10/07/2008 |
| 7426377 | Sigma delta (ΣΔ) transmitter circuits and transceiver using the same A ΣΔ transmitter that permits setting of a loop filter LF, a charge pump current and other factors to the same conditions even if it is operated in a plurality of frequency bands, therefore allows the number of components to be reduced and at the same time enables... | 09/16/2008 |
| 7421252 | Center frequency control of an integrated phase rotator band-pass filter using VCO coarse trim bits A phase rotator for a Cartesian feedback power amplifier in a transmitter final stage contains an integrated voltage controlled tunable resonant circuit accomplishing band-pass filtering at a center frequency selected by local oscillator (LO) coarse trim control sig... | 09/02/2008 |
| 7398073 | Low noise mixer A low noise mixer comprises a first mixer core configured to receive a radio frequency (RF) input signal having an RF frequency, and a first local oscillator signal, wherein the first local oscillator signal is at a frequency that is nominally twice the frequency of... | 07/08/2008 |
| 7398074 | Integrated transceiver circuit with low interference production and sensitivity An integrated transceiver circuit has a reception path, which in turn has a mixer unit for demodulation of a received signal. An analog/digital converter unit is connected in the reception path downstream from the mixer unit. A first frequency divider is connected b... | 07/08/2008 |
| 7395074 | Position detection with frequency smoothing The invention relates to a method for calculating a position of a mobile communications equipment. In order to obtain a more accurate position information of the mobile communications equipment, receiving physical communication channels within the mobile communicati... | 07/01/2008 |
| 7386286 | High frequency low noise phase-frequency detector and phase noise reduction method and apparatus The present invention discloses a new type of extremely low-noise phase-frequency detector (PFD) 500, broadband from DC to multi-GHz RF frequencies for PLL synthesizer applications. Free of any feedback mechanisms, thus inherently fast, it operates close to t... | 06/10/2008 |
| 7386064 | Communication semiconductor integrated circuit device and a wireless communication system In one embodiment, a PLL circuit is provided with a plurality of pull-in operation modes for pulling a voltage across a filter capacitor (C1, C2) in a lock-up voltage, and with a register (CRG) for designating one of the plurality of pull-in operation ... | 06/10/2008 |
| 7383025 | Method for processing RF signals for receiving and transmission Methodology for processing of RF signals for receiving and transmission, which varies the frequencies of local oscillators, in order to enable the receivers and transmitters to operate with higher performance in wider or multi-bands. bands. Their integrations into I... | 06/03/2008 |
| 7383033 | Differential and quadrature harmonic VCO and methods therefor A differential and quadrature harmonic voltage controlled oscillator (VCO), and a method for generating a differential and quadrature harmonic signal. The VCO may include a first oscillation unit for generating a first and a third signal, a first combining unit for ... | 06/03/2008 |
| 7379722 | Frequency allocation using a single VCO An apparatus and method to use a single voltage controlled oscillator (VCO) to generate frequencies to cover multiple frequency bands. The single VCO generates local oscillator signals for more than one frequency band of a communication standard or protocol, such as... | 05/27/2008 |
| 7373245 | System and method for networking a plurality of nodes A system and method for networking a plurality of nodes is disclosed. A network of data devices having data representations of connectivity, network node position, and/or position topologies is also disclosed, wherein the network may be self-configuring and the netw... | 05/13/2008 |
| 7369830 | Monolithic GPS RF front end integrated circuit A highly integrated GPS RF Front End which uses a single conversion stage employs an image rejection mixer stage to eliminate the need for an image reject RF bandpass filter. Also a relatively high sample rate A/D is employed which allows a timeless monolitic IF Fil... | 05/06/2008 |
| 7369829 | Signal reception apparatus and method for multi-band ultra-wideband communication systems A signal reception apparatus and method for communication systems. The signal reception apparatus for communication systems according to the present invention is applicable to communication environments in which a plurality of sub-bands having different frequency ba... | 05/06/2008 |
| 7362263 | Keeping accurate time for a hybrid GPS receiver and mobile phone when powered off A hybrid navigation satellite receiver and mobile telephone uses only two crystal oscillators. One that operates a master clock around 27-MHz and that consumes milliwatts of power. The other oscillator consumes only microwatts of power and operates continuously on b... | 04/22/2008 |
| 7359684 | Wireless communication system with variable intermediate frequency transmitter A wireless communication device (UST), comprising an input for receiving baseband data (I, Q) in a first signal having a first frequency. The device also comprises circuitry (681, 682) for increasing the first frequency, to form a... | 04/15/2008 |
