Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 8116711 | Receiver system and method that detects and attenuates noise in a predetermined frequency range A receiver system and method for detecting and attenuating noise in a predetermined frequency range. The system includes at least one antenna, at least one filter, at least one automatic gain control device, and at least one processor. The at least one antenna recei... | 02/14/2012 |
| 8112052 | Automatic gain control loop with hysteresis switching An automatic gain control system with hysteresis switching includes an error calculator for calculating the difference between a first estimation signal and a take over point (TOP) value to produce an error signal. A hysteresis comparator compares the first estimati... | 02/07/2012 |
| 8078127 | Reception device, reception method and program A reception device includes: an AGC circuit adapted to control the amplitude of a receive signal; a correction circuit adapted to correct the flutter component in the output signal of the AGC circuit; a synchronization circuit adapted to establish synchronization wi... | 12/13/2011 |
| 8060043 | Adaptive IIP2 calibration A radio frequency transceiver (102), including a transmitter (104), a duplexer (108) and a direct-conversion receiver (106) including a mixer (140 and 141). An IIP2 calibration system (170), coupled to the transceiver... | 11/15/2011 |
| 8050643 | RF-AGC scheme insensitive to channel interference and deep fading In a method and system for controlling gain in an RF receiver, an RF signal is analyzed over different attack and decay windows, from which the receiver determines (1) if the signal is in an attack condition with dip values below a threshold level thus indicating a ... | 11/01/2011 |
| 8050642 | Variable gain amplifier and receiver including the same Provided are a variable gain amplifier and a receiver including the same. The variable gain amplifier includes: a gain controller generating a gain control voltage; a variable gain amplifier amplifying an input signal and a feedback signal by using a voltage gain th... | 11/01/2011 |
| 8041322 | RF receiver device A radio-frequency receiver includes an RF amplification circuit which amplifies a received RF signal and generates an amplified RF signal, a mixing circuit which converts the amplified RF signal into an intermediate-frequency signal, an IF amplification circuit whic... | 10/18/2011 |
| 8036618 | Auto gain controller and control method thereof An auto gain controller (AGC) and a control method thereof are provided. An input signal is amplified by a radio frequency (RF) amplifier and an intermediate frequency (IF) amplifier. When strength of the input signal is lower than a threshold, a gain curve of the R... | 10/11/2011 |
| 8032099 | Automatic gain control circuit using gain shift An AGC circuit includes a low noise RF amplifying module with an adjustable gain, a frequency converter, an IF/Baseband amplifying module with an adjustable gain, an A/D converter, an AGC module and a gain distribution module. The AGC module is configured for detect... | 10/04/2011 |
| 8000671 | Dual threshold demodulation in an amplitude modulation radio receiver A method, algorithm, circuits, and/or systems for demodulation in an amplitude modulated (AM) radio receiver are disclosed. In one embodiment, a radio receiver can include an amplifier configured to receive a radio frequency (RF) input signal and a gain control sign... | 08/16/2011 |
| 7995979 | Wireless receiver with automatic gain control and method for automatic gain control of receiving circuit utilized in wireless receiver A wireless receiver with automatic gain control and a method for automatic gain control of a receiving circuit utilized in a wireless receiver are provided. The receiving circuit includes a programmable gain amplifier and a low noise amplifier, and the method includ... | 08/09/2011 |
| 7995980 | Automatic gain control apparatus and method An automatic gain control apparatus includes a first comparing module, a counting module, a second comparing module, and a control module. The first comparing module compares an input signal with a first threshold level and a second threshold level to generate a fir... | 08/09/2011 |
| 7991371 | Automatic gain control apparatus for wireless communication apparatus An arbitrary threshold value (Ei0) is established which defines a boundary as to activating an RF-AGC circuit (21) if the value of the field intensity (Ei) of a received signal is greater than what value while the value of the field intensity of a sign... | 08/02/2011 |
| 7962111 | Distributed automatic gain control system A wireless distribution system includes a number of remote units distributed in a coverage area to receive wireless signals and to provide the signals through the distribution system to input ports of a node where the signals are combined, a number of input power mo... | 06/14/2011 |
| 7904044 | Automatic gain control apparatus and method in mobile communication system The present invention relates to an automatic gain control apparatus and method in a mobile communication system. According to the automatic gain control apparatus of an embodiment of the invention, when downlink signals include both directional beam signals and bea... | 03/08/2011 |
| 7885626 | 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... | 02/08/2011 |
| 7873340 | Method to track analog gain step magnitudes online during operation of wireless mobile devices Systems and methods are provided for tracking and compensating for analog gain mismatches or changes in a receiver. In an embodiment, a method is provided to track analog gain step magnitudes during operation of a device. The method includes employing an error signa... | 01/18/2011 |
| 7856218 | Direct conversion receiver In a direct conversion receiver, to cancel a DC offset generated in the baseband processing block, negative feedback arrangements comprising a gain control amplifier and a low-pass filter are respectively attached to the I and Q signal branches of the baseband block... | 12/21/2010 |
| 7853229 | Methods and apparatus for calibration of automatic gain control in broadcast tuners In one aspect, a calibration component configured to calibrate an automatic gain controller (AGC) for use in a tuner configured to isolate a selected channel from a multi-channel broadcast signal, the tuner implemented substantially on two chips, a first chip compri... | 12/14/2010 |
| 7809343 | Multi-channel receiver with improved AGC An improved multi-channel receiver for satellite broadcast applications or the like. In an exemplary embodiment, an AGC loop, under the control of an AGC processor, controls the gain of an analog sub-receiver adapted to simultaneously receive multiple signals to ach... | 10/05/2010 |
| 7801503 | Direct conversion receiver circuit A receiver circuit includes a low noise amplifier (LNA) 1 to which a received signal is input, a mixer 2 for mixing an output of the LNA and a local signal, a first low-pass filter 3 for receiving an output of the mixer, and a composite amplifie... | 09/21/2010 |
| 7792508 | Radio frequency signal receiver for controlling bias current and method for controlling bias current A radio frequency (RF) signal receiver for controlling a bias current and a method for controlling a bias current are provided. The RF signal receiver includes an antenna which receives an RF signal and an RF signal processing module which processes the received RF ... | 09/07/2010 |
| 7787848 | Automatic gain control method for receiver and apparatus thereof A gain control method which includes setting a first initial gain value to a first variable gain amplifier; measuring a first power value corresponding to incoming signals; measuring a second power value corresponding to a target signal; and resetting the first init... | 08/31/2010 |
| 7778617 | Three stage algorithm for automatic gain control in a receiver system In an embodiment, a receiver for processing a RF input signal having a variable signal strength includes an RF amplifier, an IF amplifier, and a controller. The RF amplifier is configured to receive and amplify the RF input signal. The IF amplifier is coupled to an ... | 08/17/2010 |
| 7778616 | Method and apparatus for reducing signal interference in a wireless receiver based on signal-to-interference ratio One illustrative method of reducing signal interference in a wireless receiver includes receiving a radio frequency (RF) signal; amplifying the received RF signal with a gain G; producing a baseband signal from the amplified RF signal; producing a signal-to-interfer... | 08/17/2010 |
| 7769357 | Multi-channel receiver with improved AGC An improved multi-channel receiver for satellite broadcast applications or the like. In an exemplary embodiment, an AGC loop, under the control of an AGC processor, controls the gain of an analog sub-receiver adapted to simultaneously receive multiple signals to ach... | 08/03/2010 |
| 7756499 | Receiver and amplification-gain controlling device thereof The receiver comprises a variable gain amplification unit, a mixing unit, a filtering unit, and three compensation unit. Each compensation unit detects powers of the signal amplified in the variable gain amplification unit, the signal down-converted in the mixing un... | 07/13/2010 |
| 7729675 | Reducing noise during a gain change In one embodiment, the present invention includes a method for injecting a gain compensation value into a signal path of a receiver for a predetermined time when a change to a control value for an amplifier of the receiver occurs. This gain compensation value may be... | 06/01/2010 |
| 7729676 | 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 programmable attenuation and a programmable gain low noise amplifier. Frequency conversion cir... | 06/01/2010 |
| 7706766 | Method and system for a programmable biasing mechanism for a mobile digital television environment Certain aspects of a method and system for programmable biasing mechanism for a mobile digital television environment are disclosed. Aspects of one method may include controlling a bias of components within each of a plurality of radio frequency (RF) front-ends that... | 04/27/2010 |
| 7676208 | Automatic gain control device having variable gain control interval and method thereof An exemplary automatic gain control device includes: a radio frequency receiver for receiving a plurality of first signals through a plurality of antennas, respectively controlling gains of the plurality of first received signals, and outputting the plurality of the... | 03/09/2010 |
| 7653368 | Radio receiver and a method thereof Briefly, a radio receiver architecture and a method of measuring a power of a received signal to provide a first measurement, measuring a power of an assigned channel signal to provide a second measurement and adjusting a power of an input signal of an analog to dig... | 01/26/2010 |
| 7653369 | Combined discrete automatic gain control (AGC) and DC estimation A wireless communications receiver includes a memory configured to store offset values corresponding to respective gain settings. A gain controller is configured to continuously select one of the gain settings based on amplitude of a received signal. An amplifier is... | 01/26/2010 |
| 7650127 | Gain controlled external low noise amplifier A receiver for receiving radio frequency signals from a remote keyless entry system and another system includes a low noise amplifier for amplifying and increasing the range and sensitivity of the receiver, such that the receiver may receive signals at increased dis... | 01/19/2010 |
| 7593706 | Dynamic pre-selector for a GPS receiver A GPS receiver circuit (300) for reducing insertion loss. The receiver circuit (300) includes a switch (304) for diverting input signals between a filtered pathway (312) and a short circuit pathway (310) to an amplifier (314... | 09/22/2009 |
| 7593705 | Radio receiver and gain control method A radio receiver includes a branching unit, a first gain-control system, a second-gain control system, and a signal processing unit. The branching unit branches a radio signal received by the radio receiver into two signals. The first-gain control system performs a ... | 09/22/2009 |
| 7577414 | Methods and apparatus for automatic gain control in broadband tuners In one aspect, an automatic gain control (AGC) for applying a variable gain to a broadband signal is provided. The AGC comprises a variable gain amplifier adapted to receive the broadband signal as an input, the variable gain amplifier configured to apply a variable... | 08/18/2009 |
| 7565124 | Automatic gain control circuit including power detector Disclosed herein is an automatic gain control circuit including a power detector. The automatic gain control circuit includes a receiving unit for receiving an RF signal and a gain control unit for controlling the gain of the receiving unit. The receiving unit compr... | 07/21/2009 |
| 7558551 | Signal distribution system cascadable AGC device and method A cascadable AGC amplifier in a signal distribution system includes a low noise cascadable amplifier having a through path and a cascadable output. The cascadable amplifier is also configured to provide AGC over a predetermined input power range. The cascadable AGC ... | 07/07/2009 |
| 7551907 | Digital automatic gain control with parallel/serial interface for multiple antenna ultra wideband OFDM system The invention enables automatic gain control in ultra wideband applications over multiple channels and frequency bands. ... | 06/23/2009 |
