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| Number | Title | Issue Date |
| 8155611 | GPS baseband architecture A GPS baseband architecture provides flexibility and power consumption and chip area usage advantages. The GPS baseband architecture includes a first stage having a preamplifier coupled to a low noise amplifier, which is coupled to a mixer. A PLL provides the mixer ... | 04/10/2012 |
| 8145166 | Enhanced programmable automatic level control An enhanced programmable automatic level control loop comprising an input for receiving an input RF signal; a level modulator, wherein the level modulator receives the input RF signal and a control signal and wherein the level modulator produces a first signal; a mi... | 03/27/2012 |
| 8145165 | Spur mitigation for wireless communication systems A receiver for a wireless communication device comprising a mechanism for performing spur mitigation. An AGC unit of the receiver is operable to determine when an amplitude of an ADC output signal associated with a received RF signal is outside a predetermined ampli... | 03/27/2012 |
| 8135366 | Wireless communication circuit and wireless communication system A wireless communication circuit has a second control circuit which reduces the gain of the differential converter when the signal level of the RF signal is at least a specified level and the RF signal includes a disturbing wave of a predetermined level or higher. | 03/13/2012 |
| 8126413 | Vehicle antenna A vehicle antenna includes a first Automatic Gain Control (AGC) unit and a second AGC unit. The first AGC unit may attenuate an input signal based on the strength of the input signal, and then output the attenuated signal to a transistor. The second AGC unit may con... | 02/28/2012 |
| 8121572 | Signal strength detecting device and related method A signal strength detecting device of a communication system is disclosed. The signal strength detecting device is coupled to a frequency down mixer of the communication system and the frequency down mixer is used for receiving and converting a first signal to a sec... | 02/21/2012 |
| 8107910 | Differential to single-ended conversion for radio frequency devices In an exemplary embodiment, a circuit is disclosed comprising a plurality of inputs, each input to receive a radio frequency waveform from a plurality of differential input waveforms having different phases; and an inverter circuit to invert a waveform from the plur... | 01/31/2012 |
| 8107911 | Signal processing device and signal processing method A signal processing device and signal processing method is provided that includes a detection unit for detecting a signal strength of a signal, whereby the detection unit is configured to output a detection value that represents the signal strength of the signal; a ... | 01/31/2012 |
| 8107912 | Mobile communication apparatus A transceiver suitable for larger scale of integration employs direct conversion reception for reducing the number of filters. Also, the number of VCOs is reduced by utilizing dividers to supply a receiver and a transmitter with locally oscillated signals at an RF b... | 01/31/2012 |
| 8095101 | Receiving device and related method for calibrating DC offset A receiving device includes a mixer, an AC coupling circuit, a post-stage circuit, and a DC offset calibration circuit. The mixer is utilized for mixing an input signal with a local oscillating (LO) signal from an oscillator to generate a converted signal. The AC co... | 01/10/2012 |
| 8078126 | Communication apparatus and low noise amplifying method A communication apparatus and a low noise amplifying method. The communication apparatus includes a gain adjusting unit to adjust a gain of an input signal; a combiner to generate an output signal using the signal gain-adjusted at the gain adjusting unit; and a feed... | 12/13/2011 |
| 8064859 | Gain insensitive high-pass VGA An integrated circuit radio transceiver and method therefor includes a high-pass variable gain amplifier (HPVGA) operably disposed within one of the transmitter and the receiver front ends operable to provide a linear variable gain and a substantially constant high-... | 11/22/2011 |
| 8055229 | Low noise, highly linear amplifying stage and signal receiver using the same The invention provides a signal amplifying stage, used in a signal receiver. The signal amplifying stage has: a fixed-gain low noise amplifier (LNA), amplifying an input signal; a variable-gain LNA (VG-LNA) array, amplifying the input signal, including a plurality o... | 11/08/2011 |
| 8055230 | Low noise amplifier gain adaption based on a received signal strength indication of bluetooth and wlan signals A method and system for adapting low noise amplifier gain comprise determining a Bluetooth received signal strength indication of Bluetooth signals transmitted by a Bluetooth peer; determining a WLAN received signal strength indication of WLAN signals transmitted by... | 11/08/2011 |
| 8055231 | RF feedback engine coupled to receiver low noise amplifier Methods and apparatus to perform radio frequency (RF) analog-to-digital conversion are described. According to one example, a receiver includes an amplifier to amplify received analog RF signals and a mixer-free circuit for converting the received analog RF signals ... | 11/08/2011 |
| 8045941 | Methods and apparatus to implement receiver linearity enhancement Methods and apparatus to implement receiver linearity enhancement are described. One example method includes controlling receiver gain by determining a level of a received signal that is to be provided to a radio frequency component; determining if the level of the ... | 10/25/2011 |
| RE42799 | Packet acquisition and channel tracking for a wireless communication device configured in a zero intermediate frequency architecture A method of controlling operation of a wireless device configured in a zero intermediate frequency architecture including a DC loop and a gain loop. The method includes processing energy in a wireless medium to generate a corresponding receive signal, monitoring the... | 10/04/2011 |
| 8000670 | Removing close-in interferers through a feedback loop System and method for elimination of close-in interferers through feedback. A preferred embodiment comprises an interferer predictor (for example, interferer predictor 840) coupled to a digital output of a direct RF radio receiver (for example, radio receiver... | 08/16/2011 |
| 7979041 | Out-of-channel received signal strength indication (RSSI) for RF front end The signal strength of an out-of-channel interferer is estimated by measuring the transition density of the sign of the down-converted signal. RF interferers at a higher or lower frequency than the desired RF signal appear as high frequency content in the down-conve... | 07/12/2011 |
| 7949321 | Wireless communication system, wireless communication apparatus, amplification factor determination method, and storage medium The back-off of an AGC diversion section can be appropriately controlled. A base station apparatus (10) includes an amplifying part (12) for receiving a first transmission signal, which is generated by being modulated using a first modulation scheme an... | 05/24/2011 |
| 7945226 | Method and circuit for adaptive automatic gain control A method for adaptive automatic gain control and an automatic gain control circuit are provided. A predetermined waveform is injected into the automatic gain control circuit. A signal is sampled at at least one point in the automatic gain control circuit in which th... | 05/17/2011 |
| 7920840 | Wireless receiver apparatus provided with gain control amplifier In a wireless receiver apparatus including a gain control amplifier for controlling a gain of a reception signal, a maintaining device compulsorily maintains the gain of the gain control amplifier at a predetermined fixed value only in a predetermined specified inte... | 04/05/2011 |
| 7917114 | DC cancellation circuit The present invention relates to a DC offset canceling circuit. In one aspect of the invention, a DC offset canceling circuit with independently configurable gain and roll-off frequency is provided. In one embodiment of the present invention, the DC offset canceling... | 03/29/2011 |
| 7885625 | RF A/D converter with phased feedback to low noise amplifier Methods and apparatus to perform radio frequency (RF) analog-to-digital conversion are described. According to one example, a receiver includes an amplifier to amplify received analog RF signals and a mixer-free circuit for converting the received analog RF signals ... | 02/08/2011 |
| 7877072 | System and method for adaptively controlling receiver gain switch points Accordingly, a system and method are provided for adaptively controlling amplification in a wireless communications device receiver. The method comprises: receiving a signal with a variable signal strength; amplifying the received signal in response to the signal st... | 01/25/2011 |
| 7853228 | Signal relay apparatus, method, and computer readable medium adapted for wireless network A signal relay apparatus, method, application program, and computer readable medium adapted for wireless network are capable of saving power consumption due to failure of adjusting amplifying gain dynamically and solving the difficulty of demodulation since noise is... | 12/14/2010 |
| 7853227 | AGC system and method for broadband tuners A system for providing automatic gain control (AGC) comprises a signal path with an RF input, a plurality of power detectors in communication with the signal path, each of the power detectors operable to measure a total broadband power level of a signal in the signa... | 12/14/2010 |
| 7835713 | Method and system for avoiding detection of false modulated signals in wireless communications There is provided a method for use in a wireless communication to avoid detection of a false modulated signal in a paged device. In one embodiment, a modulated signal is received by the paged device. Then, the modulated signal is identified by the paged device as a ... | 11/16/2010 |
| 7805121 | Radio signal receiver and gain control method thereof A radio signal receiver in which a RF-receiving unit 12 converts a radio received signal to a baseband signal, an AD-conversion unit 15a, 15b converts that baseband received signal to a digital signal, and a baseband-processing uni... | 09/28/2010 |
| 7787847 | Front end and high frequency receiver having quadrature low noise amplifier A front end and a high frequency receiver provided therewith are described, which front end comprises a quadrature low noise amplifier as a low noise amplifier. A high isolation between local oscillators and quadrature mixers is achieved thereby, reducing a DC offse... | 08/31/2010 |
| 7783272 | Dynamic performance control of broadband tuner A broadband signal amplifier includes one of more broadband amplifier circuits, each dynamically controlled in response to a total power level of signals applied thereto to reduce linearity in response to a reduction of input signal strength. A filter may couple the... | 08/24/2010 |
| 7761071 | Variable gain amplifier, and AM-modulated signal reception circuit and detection circuit In order to provide a variable gain amplifier of enhanced linearity and wide variable gain range, an AM-modulated signal reception circuit in which the noise of an input portion is reduced so as to improve the follow-up characteristic of an AGC circuit, and an AM-mo... | 07/20/2010 |
| 7734266 | Adaptive radio frequency receiver An improved radio frequency receiver and method enabling the dynamic range of a radio frequency receiver to be extended are disclosed. In the receiver system, the effective received channel power is a combination of the wanted signal level, the noise floor and any i... | 06/08/2010 |
| 7697911 | Single path architecture with digital automatic gain control for SDARS receivers An SDARS receiver includes an analog front end configured to receive a composite signal. An A/D converter is coupled to the analog front end and converts the signal to a digitized signal. A digital down converter (DDC) is coupled to the A/D converter and down conver... | 04/13/2010 |
| 7676207 | System and method for digital autonomous automatic gain control (AGC) for DVB-H receivers Digital autonomous AGC for a DVB-H receiver comprises detecting a plurality of RF signals entering a LNA in the DVB-H receiver; detecting a RF transmitter blocker signal occurring at the LNA; and differentiating between a desired RF signal and an undesired RF transm... | 03/09/2010 |
| 7676206 | Low noise, low distortion radio receiver front-end A radio receiver front-end includes a tunable antenna interface and a low noise amplifying section. The tunable antenna interface is operably coupled to receive a wide bandwidth signal from an antenna, wherein the wide bandwidth signal includes a plurality of channe... | 03/09/2010 |
| 7672654 | Broadcasting receiver and method of receiving a broadcasting wave A receiver has an amplifier for amplifying a TV broadcast signal. A mixer mixes the amplified signal with an oscillation signal corresponding to a channel selection signal and generates a low frequency signal. A bandpass filter generates a signal having an amplitude... | 03/02/2010 |
| 7668522 | Ultra wide band, differential input/output, high frequency active combiner in an integrated circuit A wideband combiner includes a core amplifier for receiving first and second pairs of differential input signals and providing a single pair of differential output signals. The pair of differential output signals are a combination of the first and second pair of dif... | 02/23/2010 |
| 7657241 | Distortion reduction calibration Techniques are disclosed for compensating for second-order distortion in a wireless communication device. In a zero-intermediate frequency (IF) or low-IF architecture, IM2 distortion generated by the mixer (20) results in undesirable distortion levels ... | 02/02/2010 |
| 7643812 | Method and apparatus for a single-path enhanced-algorithm digital automatic gain control integrated receiver with power management and XM interference enhancement A single-path enhanced-algorithm digital automatic gain control (SDAGC) integrated receiver is presented. The SDAGC has a front-end RF/IF reception/processing block and associated RF/IF AGC, which outputs to a single ADC. Output from the ADC is split into two TDM an... | 01/05/2010 |
