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8149761 |
Incrementally increasing deployment of gateways
In one embodiment, a satellite communications system includes first and second receivers, splitters, and combiners. The first receiver is configured to receive a first microwave communications...
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8132214 |
Low noise block converter feedhorn
A circuit, electrical device or other apparatus for band stacking and/or band translating multiple transmissions. Such transmissions may be satellite transmissions, terrestrial transmissions,...
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8107914 |
RF filter with low-IF mixing, tuning and calibration
Radio-frequency (RF) circuits, methods and systems are implemented according to a variety of embodiments. According to one such embodiment, a radio-frequency (RF) receiver circuit is implemented...
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8099070 |
Passive mixer and four phase clocking method and apparatus
According to one embodiment, a radio frequency receiver includes a quadrature mixer for converting radio frequency signals to baseband signals or intermediate frequency signals. The quadrature...
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8086209 |
Method and apparatus for frequency mixing of radio frequency signals
A mixer such as an I/Q mixer, having an amplifier having first and second inputs and an output. The first input corresponding to, for example, an I input, and the second input corresponding to, for...
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8063997 |
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...
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8050649 |
Downconversion mixer with IM2 cancellation
A downconversion mixer with IM2 cancellation includes a mixer, an IM2 generator, and a scaling unit. The mixer frequency downconverts an input RF signal with an LO signal and generates an output...
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8050648 |
Superconducting digital mixer
Digital mixers which permit mixing of asynchronous signals may be constructed of Rapid Single Flux Quantum (RSFQ) logic elements. The logic elements may include an RSFQ non-destructive readout cell...
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8035754 |
Receiver apparatus and information recording/outputting apparatus
First and second signal processing units are each configured by an IC, so that the circuit space occupying in a receiver apparatus can be reduced. The signal path can be shortened from a BPF...
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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...
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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...
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7885624 |
Filter switching system and method
A communication system with variable filter bandwidth includes a first mixer circuit configured to receive a communication signal and shift the frequency range of the communication signal to a...
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7877073 |
Superheterodyne receiver having at least one downconversion stage empolying a single image reject filter stage and both low-side injection and high-side injection of a local oscillator signal
A multi-channel superheterodyne receiver employs a low intermediate frequency (IF) and both high-side injection and low-side injection of a selected local oscillator (LO) signal into the mixer in...
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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...
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7796971 |
Mixer/DAC chip and method
An electronic chip has a data input for receiving an input digital data signal with a data frequency, a plurality of switches, and a logic circuit operatively coupled with both the plurality of...
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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...
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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...
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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,...
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7606551 |
Mixer circuit with balanced frequency mixer with varactor diodes
In a mixer circuit with a balanced frequency mixer with varactor diodes, a first input signal that exhibits a first input frequency can be fed to the frequency mixer via a first input. Furthermore,...
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7587224 |
Reconfigurable topology for receiver front ends
The method and apparatus of the present invention provide for a configurable radio front end topology that allows selectable operation in a single balanced mode and in a double balanced mode of...
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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 I mixer...
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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...
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7536160 |
Wideband phase shift device
The invention relates to a wideband phase shift device. A phase shift φ is introduced on the fixed frequency local oscillator. The principle of the invention is to realise a double translation of ...
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7536163 |
Apparatus and method generating multi RF tone signals in UWB communication system
An apparatus and method for converting a frequency of a high frequency signal received from an antenna in an ultra wide band communication system transmitting and receiving using at least two...
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7529533 |
Configurable homodyne/heterodyne radio receiver and RFID reader employing same
The embodiments of the present invention provide a configurable homodyne/heterodyne RF receiver including first and second mixers. The configurable homodyne/heterodyne RF receiver functions as a...
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7522875 |
Signal selector and combiner system for broadband content distribution
In a satellite receiving system, program channels are selected from one or more broadband signals and combined with other selected channels and transmitted from a first unit, for example an outdoor...
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7489916 |
Direct down-conversion mixer architecture
Direct down-conversion mixer. A direct down-conversion mixer is provided. The mixer comprises an LO switching pair coupled to receive an RF input signal and produce a down converted output signal....
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7486338 |
Fully integrated terrestrial TV tuner architecture
A TV tuner consisting of a least one low-noise amplifier, one mixer and one variable-gain amplifier plus two band-pass filters, the first of which is placed after low-noise amplifier and before the...
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7477918 |
Radio frequency receiver and radio frequency transmitter
A radio-frequency receiver. The radio-frequency receiver includes a first and second low noise amplifier (LNA), a local oscillating module, and a first, second, and third mixer. The first LNA...
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7450185 |
Fully integrated tuner circuit architecture for a television system
A television tuner system includes a low noise amplifier (LNA) for receiving and amplifying television signals, a quadrature mixer coupled to receive the amplified television signals and generate...
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7447493 |
Tuner suitable for integration and method for tuning a radio frequency signal
A tuner (200) includes a direct digital frequency synthesizer (206) and a mixer (220). The direct digital frequency synthesizer (206) has an output terminal for providing a digital local oscillator...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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)...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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