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| Number | Title | Issue Date |
| 7949319 | Receiver architectures for digital radio broadcasts and associated methods Receiver architectures and related methods are disclosed for high definition (HD) and digital radio FM broadcast receivers. The radio receiver architectures are configured to utilize multiple analog-to-digital converters (ADCs) to handle the digital radio spectrum a... | 05/24/2011 |
| 7937054 | MEMS based multiband receiver architecture A receiver comprising at least one micro-electromechanical system (MEMS) antenna-select switch, a MEMS filter bank communicatively coupled to the antenna-select switch and a plurality of intermediate frequency modules communicatively coupled to the MEMS filter bank ... | 05/03/2011 |
| 7840201 | Communication module having tuner units that are separated and isolated from each other, and method of manufacturing the same A communication module is provided in which its characteristic of separation between its first and second tuner units is improved. The module is equipped with a circuit board having a first main surface, and a second main surface opposite to the first main surface; ... | 11/23/2010 |
| 7702305 | Use of a preselection filter bank and switched local oscillator counter in an instrumentation receiver An instrumentation receiver architecture for processing an RF signal has a dual-IF channel architecture, a low-band IF channel and a high-band IF channel, and a tunable oscillator, such as a yttrium-iron-garnet (YIG) tunable oscillator (YTO), a voltage controlled os... | 04/20/2010 |
| 7643808 | Device and method for mixing circuits A first and a second signal (base band and local oscillator), respectively modulated to a first and a second frequency, are mixed to deliver an output signal at a frequency obtained by combining the first and second frequencies. The mixing is accomplished through a ... | 01/05/2010 |
| 7627297 | Multi-tuner system, single package dual tuning system and receiver and digital television using the same A multi-tuner system includes a first conversion tuner that converts a first RF signal among a plurality of RF signals received from an antenna into a first IF signal using a first conversion mode, the first RF signal corresponding to a first selected channel; and a... | 12/01/2009 |
| 7561860 | Receiver AM receiver 20 is provided with antenna 1, RF amplifier 2, I/Q mixer 3, VCO 4, impulse noise detector 5, interpolator 6, BPF 7, IF amplifier 8 and AM detector 9. I/Q mixer 3 is composed of ... | 07/14/2009 |
| 7548737 | System and apparatus for a direct conversion receiver and transmitter A system for transmitting and receiving data is provided. The system includes a direct-conversion receiver that receives a signal modulated on a carrier frequency signal. The direct-conversion receiver includes one or more subharmonic local oscillator mixers. A loca... | 06/16/2009 |
| 7436308 | Adjusting RFID waveform shape in view of signal from another reader Systems, software, devices, and methods are described for an RFID reader system to communicate with RFID tags. RF energy encountered in conjunction with using a selected channel is detected. The RF energy can be a signal from another RFID reader. The detected signal... | 10/14/2008 |
| 7414676 | Integrated programmable tuner An integrated tuner is programmable to optimize its components for either analog signal reception or digital signal reception. Power to the components is increased for analog operation and decreased for digital operation. The tuner also includes a selectable and int... | 08/19/2008 |
| 7403761 | 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... | 07/22/2008 |
| 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 |
| 7392026 | Multi-band mixer and quadrature signal generator for a multi-mode radio receiver A multi-band high gain mixer and quadrature signal generator allows a receiver system to receive signals at multiple frequency bands without requiring significant hardware duplication. A single mixer directly receives any of three communication frequency bands such ... | 06/24/2008 |
| 7379727 | RF front-end receiver An RF front-end receiver comprises a low noise amplifier and a local oscillator driver, which are connected to respective input ports of a mixer which comprises a first and second transistor with gates coupled to one output terminal, a third and fourth transistor wi... | 05/27/2008 |
| 7376403 | Terahertz radiation mixer A terahertz radiation mixer comprises a heterodyned field-effect transistor (FET) having a high electron mobility heterostructure that provides a gatable two-dimensional electron gas in the channel region of the FET. The mixer can operate in either a broadband pinch... | 05/20/2008 |
| 7369837 | Frequency-mixing method and frequency-mixing device using the same A frequency-mixing method includes a step of generating a first quadrature signal having a predetermined frequency, a second quadrature signal having a phase difference of about 180 degrees with respect to a phase of the first quadrature signal, a third quadrature s... | 05/06/2008 |
| 7340233 | Integrated circuit and methods for third sub harmonic up conversion and down conversion of signals An integrated circuit may include a receiver and/or a transmitter that performs third order sub-harmonic conversion. The integrated circuit may include a Gilbert cell active mixer with three or more serially-connected transistors in each of the mixer's four branches... | 03/04/2008 |
| 7327406 | Methods and apparatus for implementing a receiver on a monolithic integrated circuit A monolithic integrated circuit includes a tuner and a SAW filter function. The tuner receives a radio frequency (RF) television signal that has a range of fundamental frequencies from 55 mega hertz (Mhz) to 880 Mhz. The tuner down converts the RF television signal ... | 02/05/2008 |
| 7324796 | Low temperature co-fired ceramic sub-harmonic mixer A sub harmonic mixer has improved electrical performance in a small package size. The mixer has a low temperature co-fired ceramic substrate. Coupled lines are located within the substrate and connected to an LO port, an RF port and an intermediate frequency port. T... | 01/29/2008 |
| 7324793 | Wireless transmission device capable of transmitting media from multiple channels A wireless transmission device capable of transmitting media from different channels concurrently. The transmitter of the device places the inputted TV signals and an audio/video signal on different segments of a frequency spectrum, combines the signals of all segme... | 01/29/2008 |
| 7308230 | Device and method to locally fill gaps in spotbeam satellite systems with frequency re-use Systems and methods for transmitting and receiving diverse signals across regions using a minimum of frequency capacity and maintaining compatibility with the heritage system. A system of the invention comprises at least one broadcast transmitter for transmitting a ... | 12/11/2007 |
| 7305217 | Low cost planar double balanced mixer A double balanced mixer includes a local oscillator balun, a radio frequency balun and four diodes. The local oscillator balun has a transmission line, a half wavelength transmission line and a quarter wavelength transmission line mounted on a printed circuit board.... | 12/04/2007 |
| 7269424 | Mobile terminal implementing a ranging signal receiver and method Mobile terminal implementing a ranging signal receiver and method. Means are provided to incorporate ranging signal reception capability into a mobile terminal (such as a UMTS terminal) notwithstanding the fact that the ranging signal has a bandwidth that is wider t... | 09/11/2007 |
| 7266352 | Multiple band RF transmitters and receivers having independently variable RF and IF local oscillators and independent high-side and low-side RF local oscillators Multistage RF transmitter and receiver circuits may use independently variable RF and IF local oscillators, allowing the RF and IF local oscillator frequencies for a given RF channel to be selected to have a large common factor with respect to the reference oscillat... | 09/04/2007 |
| 7262815 | Harmonic mixer based television tuner and method of processing a received RF signal A first local oscillator operating at a first frequency provides a first reference signal and a second reference signal. The second reference signal is the first reference signal phase shifted by 90 degrees. A first harmonic mixer has inputs coupled to a received RF... | 08/28/2007 |
| 7249368 | Tuner apparatus The present invention provides a tuner apparatus operating as a common tuner capable of receiving both satellite digital TV and terrestrial TV broadcasting. A tuner configured, according to the invention operates as follows. As the tuner apparatus receives satellite... | 07/24/2007 |
| 7236756 | Tuning signal generator and method thereof A front end tuning system includes a tuning signal generator. The tuning signal generator includes a digital-to-analog converter (DAC) to receive a pre-conditioned tuning signal at a reference input, to receive a digital value at a digital control input, and to prod... | 06/26/2007 |
| 7215931 | Method and apparatus for up-and-down-conversion of radio frequency (RF) signals This patent describes a method and system which overcomes the LO-leakage problem during modulation and demodulation, common to direct conversion and similar RF transmitters and receivers. This problem is solved using a virtual local oscillator (VLO™) signal which ... | 05/08/2007 |
| 7209726 | Switch in UHF bandpass By using ICs with combined inputs for the VHF-high bandpass circuit and the UHF bandpass circuit, undesirable resonances occur which are caused by one of the tuned circuits. The problem is solved by providing a switching means for decoupling the UHF bandpass circuit... | 04/24/2007 |
| 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 |
| 7196739 | Multi-channel tuner apparatus A multi-channel tuner apparatus is provided which is capable of simultaneously and independently selecting a plurality of channels for reception. The apparatus comprises a plurality of tuners, each of which converts a selected channel to a near-zero intermediate fre... | 03/27/2007 |
| 7194245 | High-frequency signal receiving apparatus A high-frequency signal receiver includes a mixer having one port for receiving an input signal and another port for receiving an output from a local oscillator, a filter for receiving an output from the mixer, and an output terminal to which an output from the filt... | 03/20/2007 |
| 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 |
| 7181186 | Mixer and frequency conversion apparatus for improving phase-mismatching A frequency conversion apparatus having a mixer eliminates phase miss-matching between two intermediate frequency (IF) signals having the same frequency and a 90 degree difference in phase. The frequency conversion apparatus for compensating for phase mismatching of... | 02/20/2007 |
| 7171184 | Method and apparatus for a gain controlled mixer A gain controlled mixer for an integrated CMOS transceiver. Accuracy of the controlled gain may be relatively invariant over temperature, manufacturing process, and other variations attendant to circuit realizations in a CMOS transceiver, and other realizations. A p... | 01/30/2007 |
| 7164905 | High frequency module Heretofore, a plurality of packages were used in a high frequency module in which a plurality of waveguide terminals were positioned resulting in problems, such as degradation of characteristics in the connection lines between packages, lower ease of assembly when m... | 01/16/2007 |
| 7142809 | Device and method to locally fill gaps in spotbeam satellite systems with frequency re-use Systems and methods for transmitting and receiving diverse signals across regions using a minimum of frequency capacity and maintaining compatibility with the heritage system. A system of the invention comprises at least one broadcast transmitter for transmitting a ... | 11/28/2006 |
| 7142808 | Satellite broadcast receiver apparatus intended to reduce power consumption A satellite broadcast receiver apparatus includes a plurality of signal conversion units provided corresponding to a plurality of signals transmitted from one or more satellites, each signal conversion unit frequency-converting a corresponding signal for output; a s... | 11/28/2006 |
| 7142833 | Matching unit A matching unit includes a switching means for switching an inductance of a first inductor. This switching means sets an inductance such that a first inductor shows an inductance property to both of the VHF low-band and high-band, and shows a capacitance property to... | 11/28/2006 |
