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8170151 |
FSK receiver
A receiver includes a band-pass filter that limits a passband of an IF (Intermediate Frequency) signal, an FSK detector that detects the IF signal passing through the band-pass filter to generate a...
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8160526 |
Filter configuration for a receiver of multiple broadcast standard signals
A filter arrangement for a receiver for multiple broadcast signals includes a first filter for receiving a broadcast signal from a tuner, a second filter coupled to an output of said first filter,...
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8155618 |
Receiving device for frequency modulated signals with voltage-limited reference input to demodulated signal binarization comparator
A waveform shaping circuit wave-shapes a demodulated signal after FM demodulation to generate a binary value. A smoothing circuit smoothes the demodulated signal to generate a reference voltage. A...
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8145172 |
Low-cost receiver using tracking filter
A receiver (400) includes a tracking bandpass filter (420) and a signal processing circuit (430-480). The tracking bandpass filter (420) has a first input for receiving a radio frequency (RF)...
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8135375 |
Receiver having a gain-controllable stage
A gain-controllable stage (CLN, A1, A2 . . . , A7, ACC) comprises a reactive signal divider (CLN) followed by an amplifier arrangement (A1, A2 . . . , A7, ACC). The reactive signal divider (CLN)...
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8116713 |
Automatic bandwidth control with high-deviation detection
A signal processing system and methods for controlling a bandwidth of the signal processing system are disclosed. One method includes the steps of detecting a presence of an adjacent signal on at...
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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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8103233 |
Tuner
The present disclosure relates to a tuner capable of receiving a television broadcasting signal of a wide band having an operating frequency bandwidth of 48 MHz˜1 GHz, wherein the tuner filters a ...
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8090339 |
Off-line channel tuning amplitude slope matched filter architecture
A tuning control system and associated method is provided for continuously and automatically tuning a lobed amplitude slope matching filter (ASMF) to a band center of an interfering signal to...
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8090338 |
Quadratic amplitude control circuit for cosite interference cancellation
A quadratic amplitude matching system and associated method with an associated tuning control system is provided for continuously and automatically tuning a quadratic amplitude matching filter...
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8086206 |
Quadratic amplitude control circuit for cosite interference cancellation
A quadratic amplitude matching system and associated method with an associated tuning control system is provided for continuously and automatically tuning a quadratic amplitude matching filter...
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8073419 |
Coherent tunable filter apparatus and wireless communication front-end circuit thereof
A front-end circuit with coherent tunable filters is provided. The circuit includes a first filter, an amplifier, and a second filter. The amplifier is coupled to the first filter, and the second...
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8036624 |
Off-line channel tuning amplitude slope matched filter architecture
A tuning control system and associated method is provided for continuously and automatically tuning a lobed amplitude slope matching filter (ASMF) to a band center of an interfering signal to...
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8032103 |
Tuning amplitude slope matched filter architecture
A tuning control system and associated method is provided for continuously and automatically tuning a lobed amplitude slope matching filter (ASMF) to a band center of an interfering signal to...
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8023911 |
Amplifying device and radio
An amplifying device has an amplifier which amplifies an input signal supplied from an input terminal and outputs the amplified input signal, a feedback loop which has at least one of a resistive...
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8023921 |
Quadratic amplitude control circuit for cosite interference cancellation
A quadratic amplitude matching system and associated method with an associated tuning control system is provided for continuously and automatically tuning a quadratic amplitude matching filter...
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7986932 |
Fixed point FIR filter with adaptive truncation and clipping and wireless mobile station using same
A fixed point finite impulse response (FIR) filter comprising: 1) an input stage for receiving an input signal as a sequence of input samples comprising: i) delay elements connected in series for...
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7962115 |
Circuit with programmable signal bandwidth and method thereof
A circuit with programmable signal bandwidth is provided. The circuit includes a first charge and discharge device, a first reset device, and a first variable capacitor device. The first reset...
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7949325 |
RF transmitter and integrated circuit with programmable filter module and methods for use therewith
A radio frequency (RF) transmitter includes a transmitter processing module that generates a processed signal based on outbound data, wherein the processed signal includes one of: a baseband signal...
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7937056 |
Variable capacitance device and portable phone
A variable capacitance device has a piezoelectric driving part, a movable electrode, a fixed electrode, a dielectric film and a driving control unit. The piezoelectric driving part has a...
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7917096 |
Antenna interface circuits including multiple impedance matching networks that are respectively associated with multiple frequency bands and electronic devices incorporating the same
An electronic device includes an antenna, a radio frequency circuit, and an impedance matching circuit that is connected between the antenna and the radio frequency circuit. The impedance matching...
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7917117 |
Auto-tuning amplifier
This document discloses, among other things, a front end circuit having a selectable center frequency. The center frequency is selected based on a control signal proportional to a phase difference...
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7890077 |
Balanced mixer with calibration of load impedances
A calibration device is coupled to a balanced circuit device including first and second outputs provided with first and second load impedances. The calibration device includes an adjusting circuit...
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7844213 |
Reducing spectral roll-off factors to increase spectral efficiency
Systems for delivering a plurality of broadcast programs where the transmitter and receiver roll-off factors are mismatched. A system in accordance with the present invention comprises a...
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7840202 |
Method and system for compensation of DC offset in an RF receiver
System and method for processing signals are disclosed. The method may include converting, in an RF receiver, one or more analog samples, which are selected from one of a plurality of output paths...
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7796197 |
Electronic component allowing the decoding of digital terrestrial or cable television signals
An integrated circuit includes a dual-conversion tuner, firstly upconverting so as to place a signal outside the reception band, then downconverting with zero intermediate frequency. A bulk...
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7792512 |
System and method for dynamic impedance tuning to minimize return loss
A system for tuning an impedance at a node comprises a first component associated with a first impedance when the first component is operating and a second impedance when the first component is not...
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7756502 |
High-frequency IC and GPS receiver
The high-frequency IC according to an embodiment of the invention includes a mixer down-converting the RF signal into an IF signal with a given center frequency lower than that of the RF signal, a...
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7734311 |
Multimode communication apparatus
In a multimode communication apparatus that uses a plurality of wireless communication modes, interference between communications under different wireless communication modes is suppressed, a good...
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7734274 |
Narrow-band detections of a received signal
The frequency of an RF signal to be transmitted is modulated at the transmitting unit, and the modulation information is used by the receiving unit to filter out any unwanted noise. The modulation...
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7729682 |
Receiver and methods for use therewith
A receiver includes a mixing module for mixing an input signal by at least one mixing sequence to produce a mixed signal. The mixed signal is filtered to produce a first filtered signal. A first...
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7720443 |
System and method for filtering time division multiple access telephone communications
A system and method are presented for transceiving Time Division Multiple Access (TDMA) telephone communications through a common filter. The system includes a tunable ferro-electric bandpass...
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7715813 |
Receiver having tunable amplifier with integrated tracking filter
A receiver is disclosed. The receiver includes: a tunable low noise amplifier (LNA), the tunable LNA comprising: a plurality of LNAs for receiving and amplifying a plurality of frequency bands...
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7697898 |
Method and apparatus for processing a frequency modulated (FM) signal using an adaptive equalizer
Embodiments of the present invention relate generally to receivers. A frequency modulated (FM) receiver includes an equalizer control unit coupled to receive at least one FM signal quality...
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7689193 |
Self-aligning resonator filter circuits
An embodiment of a self-aligning resonator filter circuit includes a tunable resonator having a filter output node, an oscillator having an oscillator output node, a resistance element connected...
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7688059 |
Filter characteristic adjusting apparatus and filter characteristic adjusting method
There is provided a filter characteristic adjusting apparatus and a filter characteristic adjusting method which can avoid an increase in circuit scale of the filter characteristic adjusting...
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7680477 |
Integrated radio frequency filters for multiband transceivers
A system and method integrates signal filters in a multiband transceiver. A preferred embodiment comprises an amplifier with a first tunable capacitor coupled to a signal input and a tunable...
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7653349 |
Adaptive return link for two-way satellite communication systems
A method and apparatus for adaptively transmitting an uplink signal comprising information from a ground station to a satellite is disclosed. The method comprises the steps of receiving a...
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7616939 |
Receiver and electronic device using the same
A receiver and an electronic device are provided that suppress deterioration of the signal waveform of a symbol. The receiver has a filter that sends out an output signal having a symbol at an...
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7599675 |
Method and apparatus for receiving radio frequency signals
A frequency conversion receiver comprises a passive mixer, a Low-Noise Amplifier (LNA) and a balun. The low-noise amplifier generates an amplified single-ended signal responsive to a single-ended...
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7593707 |
Method and system for compensation of DC offset in an RF receiver
Aspects of compensating for DC offset in an RF receiver may comprise sampling data from at least one of a plurality of output paths, selecting a sampled data and generating at least one feedback...
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7587192 |
Balanced mixer with calibration of load impedances
A calibration device (CC) is coupled to a balanced circuit device (MC) comprising first and second outputs respectively provided with first (Z1) and second (Z2) load impedance means. This...
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7579912 |
Method and system for multiple tuner application using a low noise broadband distribution amplifier
An active splitter circuit arrangement includes a first amplification module having a number of first input ports and first output ports. The first amplification module is configured to provide...
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7580483 |
Trimming of local oscillation in an integrated circuit radio
A method and apparatus for trimming of a local oscillation within a radio frequency integrated circuit (RFIC) includes processing that begins when an RFIC receives a radio frequency (RF) signal...
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7555275 |
Systems, methods and devices for dual closed loop modulation controller for nonlinear RF amplifier
In accordance with various exemplary embodiments of the present invention, systems, methods and devices are configured to facilitate RF envelope amplitude control. For example, a RF envelope...
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7545889 |
Blocker performance in a radio receiver
Configuring a multiple stage band pass filter of a radio frequency receiver commences by setting a corner of a low pass mixer output filter that receives a down sampled analog information signal....
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7515895 |
System and method for on-chip filter tuning
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...
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7512391 |
Self-aligning resonator filter circuit and wideband tuner circuit incorporating same
A self-aligning resonator filter, a self-aligning coupled resonator filter circuit, and a television tuner circuit incorporating the filter and the circuit are disclosed herein. The self-aligning...
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7499694 |
Tuner alignment
In a method of tuning a receiver for a digital signal (MPEG2-TS), an input signal (RF-in) is filtered (In-filt, Band-filt) to obtain a processed signal, a digital figure of merit (BER) is...
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7460587 |
Electronic circuit for performing fractional time domain interpolation and related devices and methods
A clock offset compensation arrangement may include a fractional interpolator for applying a trigonometric interpolation to a sampled input signal according to a clock offset signal. It uses...
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