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| Number | Title | Issue Date |
| 7606542 | Simplified high frequency tuner and tuning method A disclosed method tunes a signal from a channelized spectrum having a predetermined channel spacing. A signal of interest having a predetermined maximum bandwidth is mixed with a local oscillator signal, which has a frequency that is an integer multiple of the chan... | 10/20/2009 |
| 7558548 | Method and apparatus for receiving and/or down converting high frequency signals in multi mode/ multi band applications, using mixer and sampler A method and apparatus to receive and down convert high frequency radio signals to low frequency or base band frequency is disclosed. A mixer used with a sampler produces a multi mode/multi band software enhanced radio receiver capable of supporting multiple air int... | 07/07/2009 |
| 7509104 | Method and apparatus for tuning radio frequency A double conversion RF tuner includes an up-conversion unit and a down-conversion unit. The up-conversion unit up converts a received radio frequency (RF) signal corresponding to a first frequency band to a first intermediate frequency (IF) signal and up-converts th... | 03/24/2009 |
| 7437133 | Radio frequency tuner front end and tuner A front end for a radio frequency tuner, for example for connection to a cable distribution network, including an input connected to a signal path comprising an LNA connected via an AGC stage to a signal splitter. The input path has a bandwidth sufficiently wide to ... | 10/14/2008 |
| 7409199 | Direct conversion receiver with DC offset compensation A direct conversion receiver includes a mixer for converting an RF signal into a baseband signal, a dynamic DC offset compensator for compensating for a dynamic DC offset caused by the effect of second order nonlinear distortion of the mixer on an interfering wave t... | 08/05/2008 |
| 7394874 | Up/down conversion circuitry for radio transceiver A multi-channel RF receiver uses an image rejection mixer (e.g. double quadrature mixer) in the IF down conversion stage for image side band rejection (whereby use of an IF narrow band filter for image rejection may be omitted if desired) and comprises a simplified ... | 07/01/2008 |
| 7389087 | Adaptive radio transceiver with filtering An exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a controller, and a self-testing unit. All of these components can be packaged ... | 06/17/2008 |
| 7343140 | Tuner A tuner is provided for selecting, independently of each other, a plurality of radio frequency channels for simultaneous reception. The tuner comprises a plurality of up converters whose outputs are combined in a combiner. Each up converter operates independently of... | 03/11/2008 |
| 7321751 | Method and apparatus for improving dynamic range in a communication system An apparatus for improving dynamic range includes a frequency down-conversion module that receives an input signal and a bias circuit. The bias circuit includes a first resistor and a second resistor. The first resister has a first terminal coupled to a bias point a... | 01/22/2008 |
| 7315730 | Architecture for a receiver front end having dual output low noise amplifier driving separate pre-selectors coupled to a transformer for single ended output An architecture for a receiver front end utilizes a dual output low noise amplifier (102) driving separate, fixed preselectors (104, 106) coupled to a transformer (108) to generate a single ended output (113). A pair of blocks coupled in ... | 01/01/2008 |
| 7299006 | Adaptive radio transceiver An exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a controller, and a self-testing unit. All of these components can be packaged ... | 11/20/2007 |
| 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 |
| 7259800 | Television signal receiver with a universal output for surface-acoustic wave filters of different types The invention relates to a television signal receiver comprising a radio-frequency tuner (1) and at least one subsequent surface-acoustic wave filter (2), in which the radio-frequency tuner (1) filters a RF television signal applied to its input... | 08/21/2007 |
| 7251466 | Television receiver including an integrated band selection filter A tuner circuit includes a band selection filter coupled to receive an input RF signal and provide a band selected output signal where the band selection filter includes a bank of band pass filters. Each band pass filter includes an inductor and a variable capacitor... | 07/31/2007 |
| 7245872 | Satellite broadcasting converter, control circuit incorporated therein, and detector circuit used in such control circuit In a broadcasting satellite converter adapted to be connected to a BS tuner and fed with a power supply voltage signal from the broadcasting satellite tuner, a receiver circuit is controlled by a control circuit. The broadcasting satellite converter comprises a rece... | 07/17/2007 |
| 7239855 | communication semiconductor integrated circuit device and wireless communication system A communication semiconductor integrated circuit device is capable of transmission in two or more different modulation modes and outputting transmission signals with less distortion. The communication semiconductor integrated circuit device comprises a gain variable... | 07/03/2007 |
| 7239854 | Frequency-doubling circuit arrangement, and mobile radio having that circuit arrangement One or more aspects of the present invention are directed to a frequency-doubling circuit arrangement that doubles the frequency of a signal applied to its input, and presents that doubled frequency signal at its output. A rectifier that rectifies the input signal a... | 07/03/2007 |
| 7236212 | System and method for providing a low power receiver design An integrated receiver with channel selection and image rejection substantially implemented on a single CMOS integrated circuit is described. A receiver front end provides programable attenuation and a programable gain low noise amplifier. Frequency conversion circu... | 06/26/2007 |
| 7203457 | Tuning system for achieving rapid signal acquisition for a digital satellite receiver A method and apparatus for compensating for frequency drift in an LNB by storing the frequency offset of each LNB with respect to each channel. When a channel is selected, a particular LNB is activated and the table of offset values is consulted. The offset value fo... | 04/10/2007 |
| 7199664 | Integrated switchless programmable attenuator and low noise amplifier An integrated receiver with channel selection and image rejection substantially implemented on a single CMOS integrated circuit is described. A receiver front end provides programable attenuation and a programable gain low noise amplifier. Frequency conversion circu... | 04/03/2007 |
| 7194044 | Up/down conversion circuitry for radio transceiver A multi-channel RF receiver uses an image rejection mixer (e.g. double quadrature mixer) in the IF down conversion stage for image side band rejection (whereby use of an IF narrow band filter for image rejection may be omitted if desired) and comprises a simplified ... | 03/20/2007 |
| 7184724 | System and method for frequency translation using an image reject mixer Frequency translation, such as frequency up conversion of a video baseband or intermediate frequency to a desired frequency division broadcast channel, is provided utilizing a single sideband or image reject mixer and filtering having relaxed selectivity requirement... | 02/27/2007 |
| 7136622 | Adaptive radio transceiver with noise suppression An exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a controller, and a self-testing unit. All of these components can be packaged ... | 11/14/2006 |
| 7130579 | Adaptive radio transceiver with a wide tuning range VCO An exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a controller, and a self-testing unit. All of these components can be packaged ... | 10/31/2006 |
| 7127217 | On-chip calibration signal generation for tunable filters for RF communications and associated methods On-chip calibration signal generation circuitry is disclosed for filter tuning for radio-frequency communications and associated methods. On-chip circuitry generates a calibration signal that is used to help set a tuning control signal that is received by a tunable ... | 10/24/2006 |
| 7102465 | Frequency discrete LC filter bank An inductive (“L”)-capacitive (“C”) filter bank has application for use in a television receiver. The LC filter includes inductors configured in at least one inductive (“L”) bank, and capacitors configured in at least one capacitive (“C”) bank. The i... | 09/05/2006 |
| 7095454 | Broadband single conversion tuner integrated circuits A tunable receiver is disclosed including a plurality of select filters to perform an initial band selection, a variable-gain low noise amplifier (LNA) whose gain is controlled to prevent its output power level to exceed a pre-determined power threshold, a plurality... | 08/22/2006 |
| 7092043 | Fully integrated tuner architecture An integrated receiver with channel selection and image rejection substantially implemented on a single CMOS integrated circuit is described. A receiver front end provides programable attenuation and a programable gain low noise amplifier. Frequency conversion circu... | 08/15/2006 |
| 7092687 | Five-port topology for direct down-conversion An apparatus for a direct down-conversion of modulated RF signals, the device including: a first power detector connected between an input port for the modulated RF signal and ground, which outputs a first DC signal, a second power detector connected between an inpu... | 08/15/2006 |
| 7088202 | Methods and apparatus for an improved discrete 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 ... | 08/08/2006 |
| 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 |
| 7053961 | System and method for TV automatic gain control (AGC) In a terrestrial mode of a TV having analog and digital capability, the RF gain is controlled using the TV's IF tuner output. In a digital cable mode the RF gain is controlled using the output of the TV's IF SAW filter, and in an analog cable mode the RF gain is con... | 05/30/2006 |
| 7039375 | Up/down converter The invention provides an up/down converter with low phase noise. Signals from a first local oscillator are fed through a power splitter to first and second mixers. Signals from a second local oscillator and signals from the power splitter are mixed by the second mi... | 05/02/2006 |
| 7027833 | Dual band superheterodyne receiver A MMIC based superheterodyne receiver for converting at RF energy in an upper and a lower frequency band includes at least one attenuator for the RF energy input, a mixer for mixing the lower band input with a LO1 signal, another mixer for mixing the upper band inpu... | 04/11/2006 |
| 6975838 | Adaptive radio transceiver with noise suppression An exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a controller, and a self-testing unit. All of these components can be packaged ... | 12/13/2005 |
| 6965757 | Multiband short range radio receiver for motor vehicle data The short range radio receiver for motor vehicle data comprises antenna circuits (1–4) connected to a unit (10–15) for processing a carrier in a plurality of specific frequency bands which is modulated by a data signal, the unit (10–15) co... | 11/15/2005 |
| 6961546 | Adaptive radio transceiver with offset PLL with subsampling mixers An exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a controller, and a self-testing unit. All of these components can be packaged ... | 11/01/2005 |
| 6940365 | Methods and apparatus for an improved discrete 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 ... | 09/06/2005 |
| 6925289 | Broadcast receiver and channel scanning method A channel scanning method in a multi-channel digital broadcast is provided for enabling a user to identify the broadcast contents of a channel being currently received with accuracy during the channel scan, even though the broadcast contents may change within a chan... | 08/02/2005 |
| 6901249 | Complementary bipolar harmonic mixer A 3-terminal harmonic mixer which solves the conversion gain, port impedance and isolation problems associated with known harmonic mixers. In particular, the 3-terminal harmonic mixer in accordance with the present invention provides harmonically pumped anti-paralle... | 05/31/2005 |
