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| Number | Title | Issue Date |
| 8140038 | Adaptive receivers An adaptive receiver for receiving a radio frequency (RF) signal and converting the RF signal at an RF frequency FRF toward a low intermediate frequency FIF is disclosed. The adaptive receiver comprises a pair of band pass filters with a nomina... | 03/20/2012 |
| 7809344 | Fractional carrier frequency offset estimator and method of estimating fractional carrier frequency offset between transmitter and receiver Fractional carrier frequency offset estimators and related methods are disclosed. The invention may be particularly applied in WiMAX systems. The disclosed method of estimating fractional carrier frequency offset between a transmitter and a receiver includes calcula... | 10/05/2010 |
| 7321735 | Optical down-converter using universal frequency translation technology A method and system for converting an optical signal to electrical information signals, including demodulated baseband information signals and modulated baseband signals at multiple harmonics. In an embodiment, the optical information signal is amplitude modulated w... | 01/22/2008 |
| 7313379 | Generation of a self-correcting local oscillation A method and apparatus for generating a self-correcting local oscillation includes processing that begins by generating a frequency correction signal that represents undesired tones introduced by the self-correcting local oscillation. The processing continues by gen... | 12/25/2007 |
| 7295826 | Integrated frequency translation and selectivity with gain control functionality, and applications thereof Methods and apparatuses for frequency selectivity and frequency translation, and applications for such methods and apparatuses, are described herein. The method includes steps of filtering an input signal, and down-converting the filtered input signal. The filtering... | 11/13/2007 |
| 7295824 | Frequency multiplier pre-stage for fractional-N phase-locked loops A WLAN (Wireless Local Area Network) communication device comprising a WLAN frequency synthesizer for generating a synthesizer signal suitable for modulating a transmission signal and/or demodulating a reception signal and corresponding methods and integrated circui... | 11/13/2007 |
| 7292835 | Wireless and wired cable modem applications of universal frequency translation technology Frequency translation and applications of same are described herein, including cable modem applications. Such applications include, but are not limited to, frequency down-conversion, frequency up-conversion, enhanced signal reception, unified down-conversion and fil... | 11/06/2007 |
| 7233774 | RF transceiver with compact stacked mixer design for multiple frequency conversion A single chip radio transceiver includes circuitry that enables received wideband RF signals to be down-converted to baseband frequencies and baseband signals to be up-converted to wideband RF signals prior to transmission without requiring conversion to an intermed... | 06/19/2007 |
| 7224675 | Alternative frequency strategy for DRM A radio transmission signal consisting of signal frames that comprise a dynamic data part and a quasi-static data part according to the present invention is characterized in that the dynamic data part of a respective frame contains an indicator showing in which foll... | 05/29/2007 |
| 7206560 | Chopped intermediate frequency wireless receiver A chopped intermediate frequency (IF) wireless receiver is disclosed. The wireless receiver includes a local oscillator (LO), a first and a second mixers, an LO frequency control module, an IF filter, a digital down converter and a down conversion controller. The LO... | 04/17/2007 |
| 7177602 | Electronic devices having automatic frequency control systems and methods and computer program products for operating the same An automatic frequency control (AFC) system in an electronic device is operated by using an AFC-algorithm component to determine a frequency error corresponding to a difference between a frequency of a signal output from a signal generator and a received signal freq... | 02/13/2007 |
| 7133653 | Receiver and composite component having local oscillator components and mixing circuit integrally formed on semiconductor substrate A receiver and a composite component for preventing noise produced by sneaking of a local oscillation signal. An FM receiver comprises a high-frequency amplifier circuit 11, a mixing circuit 12, a local oscillator 13, intermediate-frequency filt... | 11/07/2006 |
| 7133647 | Chiprate correction in digital transceivers A transceiver for a code division multiple access communication system comprises a receiver to receive coded information signals and a transmitter to transmit coded information signals. A local oscillator provides a time and frequency reference for the receiver and ... | 11/07/2006 |
| 7110435 | Spread spectrum applications of universal frequency translation Frequency translation and spread spectrum applications of same are described herein. Such applications include, but are not limited to, unified down-conversion and de-spreading, unified up-conversion and spreading, RAKE receivers utilizing unified down-conversion an... | 09/19/2006 |
| 7110444 | Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments and circuit implementations Frequency translation and applications of the same are described herein, including RF modem and wireless local area network (WLAN) applications. In embodiments, the WLAN invention includes an antenna, an LNA/PA module, a receiver, a transmitter, a control signal gen... | 09/19/2006 |
| 7103339 | Automatic frequency correction method and receiver for time division duplex modes of 3G wireless communications A receiver for use in a wireless communication system includes a voltage controlled oscillator and estimating means for obtaining a frequency estimate to adjust the voltage controlled oscillator, thereby correcting an oscillator frequency error. The estimating means... | 09/05/2006 |
| 7103330 | Method of transmitting information between an information transmitter and an information receiver The invention describes a method of transmitting information between an information transmitter and an information receiver, the potential difference of which moves in cycles between a minimum value and a maximum value and is situated at the minimum value for regula... | 09/05/2006 |
| 7095989 | Frequency translating devices and frequency translating measurement systems with DC bias added to a mixer diode A frequency translating device (FTD) includes at least one mixer diode connected to down-convert a radio frequency (RF) to an intermediate frequency (IF) and to up-convert an IF to an RF and a source of direct current (DC) bias that is connected to the mixer diode. ... | 08/22/2006 |
| 7082295 | On-chip loop filter for use in a phase locked loop and other applications A phase locked loop that includes such a loop filter, the phase locked loop includes a difference detector, programmable charge pump, fixed loop filter, voltage controlled oscillator and adjustable divider module. The difference detector is operably coupled to deter... | 07/25/2006 |
| 7082171 | Phase shifting applications of universal frequency translation A universal frequency translation module (UFT) frequency translates an electromagnetic (EM) input signal by sampling the EM input signal according to a periodic control signal (also called an aliasing signal). By controlling the relative sampling time, the UFT modul... | 07/25/2006 |
| 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 |
| 7072390 | Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments Frequency translation and applications of the same are described herein, including RF modem and wireless local area network (WLAN) applications. In embodiments, the WLAN invention includes an antenna, an LNA/PA module, a receiver, a transmitter, a control signal gen... | 07/04/2006 |
| 7054296 | Wireless local area network (WLAN) technology and applications including techniques of universal frequency translation Frequency translation and applications of same are described herein, including wireless local area network (WLAN) applications such as IEEE Standard 802.11 WLANs. Such applications include, but are not limited to, frequency down-conversion, frequency up-conversion, ... | 05/30/2006 |
| 7043216 | Portable radio terminal and AFC control method A portable radio terminal for realizing automatic frequency control (AFC) for automatically controlling the oscillation frequency of an oscillator includes a unit for intermittently performing AFC operation, and a unit for shortening an AFC operation stop period whe... | 05/09/2006 |
| 7039372 | Method and system for frequency up-conversion with modulation embodiments A method and system is described wherein an information signals is gated at a frequency that is a sub-harmonic of the frequency of the desired output signal. In the modulation embodiments, the information signal is modulated as part of the up-conversion process. In ... | 05/02/2006 |
| 7035605 | Method and device for automatic control of the frequency of a local oscillator in a DS-CDMA type receiver A method for controlling frequency of a local oscillator in a DS-CDMA type receiver includes transforming a known spread spectrum signal into a sampled digital signal formed of symbols with a despreaded frequency spectrum, and determining a residual frequency error ... | 04/25/2006 |
| 7027787 | Automatic frequency control system, operation control method thereof and mobile communication device using the same In a mobile communication device, communication can be resumed upon next communication without causing problem even when an AFC control signal becomes abnormal upon interruption of communication. Locked state and unlocked state of an AFC portion is monitored by an A... | 04/11/2006 |
| 7027786 | Carrier and clock recovery using universal frequency translation Coherent detection of a received EM signal using universal frequency translation (UFT) is described herein. The received EM signal is sampled according to a sub-harmonic LO signal, where the LO signal is in frequency and phase coherence with the received EM signal. ... | 04/11/2006 |
| 7010286 | Apparatus, system, and method for down-converting and up-converting electromagnetic signals Methods, systems, and apparatuses for down-converting and up-converting an electromagnetic signal. In embodiments, the invention operates by receiving an electromagnetic signal and recursively operating on approximate half cycles of a carrier signal. The recursive o... | 03/07/2006 |
| 7006805 | Aliasing communication system with multi-mode and multi-band functionality and embodiments thereof, such as the family radio service A receiver having multi-mode and multi-band functionality and capabilities is described herein. The receiver is capable of selectively operating over a plurality of bands and channels. The receiver operates in a plurality of modes, including but not limited to a sin... | 02/28/2006 |
| 7002233 | Integrated circuit including an inductive element having a large quality factor and being highly compact An integrated circuit including a substrate, a conductive layer, at least one inductive element superposed on the conductive layer and formed by a metallic turn having an outer contour and an inner contour, which bound between them a surface referred to as the radia... | 02/21/2006 |
| 6980774 | Radio frequency integrated circuit A radio frequency (RF) integrated circuit (IC) includes a local oscillation module, analog radio receiver, analog radio transmitter, digital receiver module, digital transmitter module, and digital optimization module. The local oscillation module is operably couple... | 12/27/2005 |
| 6975839 | Apparatus, and associated method, for estimating frequency offset using filtered, down-sampled likelihood polynomials Apparatus, and an associated method, for facilitating frequency offset estimation between communication stations operable in a communication system. A likelihood polynomial is calculated and provided to a filter. The filter forms a filtered representation of the lik... | 12/13/2005 |
| 6968165 | Frequency scanning receiver permitting quick PPL setting A frequency scanning receiver minimizes the time needed for setting the frequency of a phased lock loop of a first local oscillator. The frequency scanning receiver is configured so that when the reference frequency of the PLL of the first local oscillator has been ... | 11/22/2005 |
| 6944432 | Crystal-less oscillator transceiver A radio frequency (RF) transceiver of the type having at least one radio frequency integrated chip (RFIC), a reference oscillator and a phase-locked oscillator, utilizes non-crystal resonator structures in place of crystal oscillators to produce the reference oscill... | 09/13/2005 |
| 6925291 | Electronic alignment system for a television signal tuner An electronic alignment system for a television signal tuner utilizes first and second controllers for generating respective first and second control signals for respective first and second signal processing circuits of a signal processing arrangement, with the firs... | 08/02/2005 |
| 6850745 | Method and apparatus for generating a self-correcting local oscillation A method and apparatus for generating a self-correcting local oscillation includes processing that begins by generating a synthesized frequency from a reference frequency. The processing then continues by dividing the synthesized frequency by a divider value to prod... | 02/01/2005 |
| 6829469 | Method and a device for producing a signal A method for producing an output signal (42) with a specific frequency from an input signal (40) received, the frequency of which changes quickly in steps of the size of an input frequency resolution or a multiple of the input frequency resolution, on ... | 12/07/2004 |
| 6813482 | Radio communication apparatus and method An amount-of-correction extracting unit detects a deviation angle from a phase of a reference signal point of phase information contained in a received signal, and determines an amount of correction based on the deviation angle. On a transmission side, transmission ... | 11/02/2004 |
| 6748036 | Radio receiving method and apparatus The invention provides a radio receiving method and apparatus by which adjustment of a reception frequency when a radio modulation signal of a PSK system is received is realized by simple processing. Phase data is sampled out in a predetermined cycle from a random r... | 06/08/2004 |
