Did You Know...
...that the video game, Pong, was invented by a guy who graduated at the bottom of his engineering class? Nolan Bushnell spent more time running the games at a local amusement park than he did on his studies at the University of Utah. His dreams of working for Disney's amusement empire were dashed when the company wouldn't hire him. Taking a boring job, Nolan daydreamed about electronic versions of popular games. He invented Pong, the first video game, and went on to found Atari Co.
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| Number | Title | Issue Date |
| 8180312 | Receiver architecture for minimizing use of external bandpass filter between low-noise amplifier and first mixer A wireless receiver is provided that includes a multi-step gain-control low-noise amplifier (LNA) stage and a mixer stage. The LNA stage is operable to amplify at least one input signal to generate at least one LNA output. The mixer stage is directly coupled to the ... | 05/15/2012 |
| 8150359 | Multiple frequency band hybrid receiver A multiple frequency band hybrid receiver includes a plurality of input terminals to which different frequency band signals are respectively inputted; a plurality of mixers connected to the plurality of input terminals sequentially, receiving the different frequency... | 04/03/2012 |
| 8150360 | DC offset calibration in a direct conversion receiver A direct conversion receiver (200) includes a low noise amplifier (LNA) (213), at least one baseband amplifier (119, 123 and 127), register banks (250 and 251) for storing a plurality of offset data corresponding to at least... | 04/03/2012 |
| 8145178 | Wireless terminal baseband processor high speed turbo decoding module A baseband processing module for use within a Radio Frequency (RF) transceiver includes a downlink/uplink interface, TX processing components, a processor, memory, RX processing components, and a turbo decoding module. The RX processing components receive a baseband... | 03/27/2012 |
| 8090340 | Down-converter and calibration method thereof A mixer and calibration method thereof are provided. A direct conversion receiver comprises a differential loading pair utilizing at least one binary weighted resistor. The binary weighted resistor is adjustable to provide a resistance linear to a digital code, comp... | 01/03/2012 |
| 8010077 | DC offset calibration in a direct conversion receiver A direct conversion receiver (200) includes a low noise amplifier (LNA) (213), at least one baseband amplifier (119, 123 and 127), register banks (250 and 251) for storing a plurality of offset data corresponding to at least... | 08/30/2011 |
| 7970373 | Direct digital conversion tuner and method for using same A direct sampling tuner includes a low noise amplifier and an optional dynamically configurable band pass filter coupled to the low noise amplifier. The optional filter is configured to pass a selected band of channels. The tuner further includes a relatively high a... | 06/28/2011 |
| 7945230 | Time-multiplexed common mode feedback for passive quadrature RF mixers A passive, differential RF mixer reduces second order intermodulation interference while maintaining I/Q isolation via common mode feedback wherein the I and Q error signals in the feedback path are time multiplexing using a four-phase LO signal. An RF signal is rec... | 05/17/2011 |
| 7904049 | Wireless terminal baseband processor high speed turbo decoding module A baseband processing module for use within a Radio Frequency (RF) transceiver includes a downlink/uplink interface, TX processing components, a processor, memory, RX processing components, and a turbo decoding module. The RX processing components receive a baseband... | 03/08/2011 |
| 7899431 | DC offset correction system for a receiver with baseband gain control A method and apparatus are provided for providing improved radio frequency (RF) receiver signal correction. For RF receiver circuitry (106) having receive path and a warmup period associated therewith and including at least one analog baseband gain control st... | 03/01/2011 |
| 7885632 | Automated noise measurement system A noise test measurement system configured to measure a noise component of a transmitted RF signal is described. The noise test measurement system may include an antenna, a low-noise amplifier, a local oscillator, a first coupler, a first variable phase-shifter, a f... | 02/08/2011 |
| 7881691 | Direct conversion TV tuner and method thereof A direct conversion method is disclosed. The method comprises: amplifying the input signal to generate an amplified signal; down-converting the amplified signal into two intermediate signals using a first set of ternary signals and a second set of ternary signals, r... | 02/01/2011 |
| 7835716 | RF receiving apparatus and method using DC offset free baseband signal An RF receiver and an RF receiving method are provided using a baseband signal in which a DC offset is removed. In the RF receiver, a noise phase removing unit generates a phase controlled local signal PLOQ in which a phase of a Q signal of a local signal LOQ is con... | 11/16/2010 |
| 7817980 | Receiver for use in wireless communications and method of operation of the receiver A wireless receiver (100) for receiving and demodulating a frequency modulated RF (radio frequency) signal by a direct conversion procedure, including channels (110, 112) for producing in-phase and quadrature components of a received RF signal, and a p... | 10/19/2010 |
| 7769361 | Systems, methods, and apparatus for frequency conversion A frequency converter according to one embodiment includes a quadrature pair of passive mixers whose input terminals are coupled to a differential radio-frequency input via the channel regions of transistors that are arranged to operate in the saturation region.... | 08/03/2010 |
| 7684779 | Wireless terminal baseband processor high speed turbo decoding module A baseband processing module for use within a Radio Frequency (RF) transceiver includes a downlink/uplink interface, TX processing components, a processor, memory, RX processing components, and a turbo decoding module. The RX processing components receive a baseband... | 03/23/2010 |
| 7660571 | Programmable attenuator using digitally controlled CMOS switches A programmable attenuator includes a resistor ladder having a plurality of taps to provide a coarse gain control. Coupled to each tap is a plurality of switches. Control logic activates or deactivates individual switches in the plurality of switches to provide a fin... | 02/09/2010 |
| 7577419 | Digital mixer system and method A digital mixer system and method is disclosed. In an embodiment, a digital mixer can receive a modulated signal having a sample rate approximately equal to a clock rate divided by an integer factor. The digital mixer can include a first mixing stage having a first ... | 08/18/2009 |
| 7522902 | Adaptive DC offset compensation apparatus and method thereof Provided are a direct current (DC) offset compensation apparatus and a method thereof. A DC offset compensation apparatus comprises an offset detection block detecting a DC offset, an offset compensation block operating according to an output signal of the offset de... | 04/21/2009 |
| 7522901 | Direct digital conversion tuner and method for using same A direct sampling tuner includes a low noise amplifier and an optional dynamically configurable band pass filter coupled to the low noise amplifier. The optional filter is configured to pass a selected band of channels. The tuner further includes a relatively high a... | 04/21/2009 |
| 7499693 | Mixer for homodyne RF receiver A mixer of a homodyne RF receiver made from a CMOS process is provided. The mixer comprises a gain stage, a switch stage and a load stage. The gain stage receives a differential-typed RF signal and generating a first gained signal. The switch stage mixes the first g... | 03/03/2009 |
| 7474885 | Passive subharmonic mixer Embodiments feature a circuit that includes a first set of differential switches to generate a first mixer output. The first set includes source terminals, a differential input terminal, gate terminals, and first mixer output terminals. For the first set, the source... | 01/06/2009 |
| 7469136 | RF receivers and methods therefor Methods in intermediate frequency and direct conversion receivers for reducing pre-selection filter leakage and harmonic coupling to a programmable voltage controlled oscillator by mixing a receive signal at a mixer having a mixer injection frequency outside a pre-s... | 12/23/2008 |
| 7463875 | Wireless device minimizing use of external bandpass filter between low-noise amplifier and first mixer A receiver system design and architecture that implements a 3-step gain LNA and an analog VGA for a WCDMA handsets and local area base stations, providing a wireless device eliminating the use of external bandpass filter between low-noise amplifier and first mixer. | 12/09/2008 |
| 7454186 | Direct conversion receiving apparatus and celluar phone The direct conversion receiving apparatus has a gain control amplifier for variably amplifying a base band signal based on a gain switching control signal. A high pass filter has a first circuit including capacitors connected in parallel that are inserted in a path ... | 11/18/2008 |
| 7421040 | Modem tuner A tuner includes a mixer which receive first and second inputs via a multiplexer in different frequency ranges from different sources such as cable and satellite. A local oscillator supplies signals via a bandswitch which switches the local oscillator frequency rang... | 09/02/2008 |
| 7415260 | Current-mode direct conversion receiver A current-mode direct conversion RF receiver is presented. In one set of embodiments the RF receiver comprises a simple transconductor input stage to create a current-mode modulated signal from a voltage-mode modulated signal. A downconversion mixer may be coupled t... | 08/19/2008 |
| 7415264 | Low noise filter for a wireless receiver A low noise filter is arranged to receive an input signal from a downconverter. The low noise filter is constructed to block or cancel any DC offset in the input signal, as well as filter selected frequency components from the input signal. The low noise filter uses... | 08/19/2008 |
| 7412222 | Quadrature correction method for analog television reception using direct-conversion tuners A direct conversion radio frequency (RF) tuner includes a mixer generating I and Q quadrature components. A phase detection circuit generates a phase error measurement between the I quadrature component and the Q quadrature component. A phase correction circuit corr... | 08/12/2008 |
| 7403760 | DC offset correction for direct-conversion receiver A DC offset correction system for a direct-conversion receiver is disclosed that may include a DC feedback correction servo-loop in signal communication with a baseband section, where the DC feedback correction servo-loop is coupled to both the input and output of t... | 07/22/2008 |
| 7398068 | Dual antenna system having one phase lock loop A dual receive path for a wireless communication device having one synthesizer that drives one or two receive VCOs. ... | 07/08/2008 |
| 7395040 | Multiple band multiple input multiple output transceiver integrated circuit A MIMO transceiver integrated circuit (IC) includes a plurality of multiple band direct conversion transmitter sections, a plurality of multiple band direct conversion receiver sections, and a local oscillation generation module. Each of the plurality of multiple ba... | 07/01/2008 |
| 7386291 | Integrated millimeter-wave quadrature generator An off-chip signal is provided to a differential branch-line directional coupler implemented entirely on-chip. The coupler produces differential quadrature signals, which are then buffered and applied to a quadrature mixer. The coupler is implemented entirely on-chi... | 06/10/2008 |
| 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 |
| 7376400 | System and method for digital radio receiver A communications system comprising a processor, a variable oscillator, a radio frequency (RF) quadrature demodulator, a variable capacitor, a continuous-time, sigma-delta analog-to-digital converter (ADC), and a frequency divider, all integrated on a single semicond... | 05/20/2008 |
| 7376405 | Receiver circuit Interruption of a reception signal is achieved by placing a first low noise amplifier into the sleep state, and short-circuiting a shunt switch provided between differential input terminals of a second low noise amplifier during a DC offset canceling period. Further... | 05/20/2008 |
| 7376440 | N-plexer systems and methods for use in a wireless communications device A wireless communication device comprises an N-plexer, that is, a multi-band device, connected to a single antenna for receiving multiple communication bands on the single antenna. The N-plexer includes a receive band pass filter of a receive signal path to receive ... | 05/20/2008 |
| 7372925 | Wireless LAN receiver with I and Q RF and baseband AGC loops and DC offset cancellation A wireless local area network receiver having separate automatic gain control (AGC) loops for providing a radio frequency AGC and a baseband frequency AGC, as well as a DC offset cancellation circuit. The AGC loops control a low noise amplifier amplifying the receiv... | 05/13/2008 |
| 7373114 | Signal transmission circuit, signal output circuit and termination method of signal transmission circuit This invention provides a signal transmission circuit, a signal output circuit, and a termination method of a signal transmission circuit capable of preventing the re-reflection of the signal at a transmitting node of a transmission path even when an impedance of a ... | 05/13/2008 |
| 7373132 | High frequency signal receiver A high frequency signal receiver can prevent higher harmonics other than a necessary higher harmonic from being subjected to frequency conversion so as to interfere with the base band signal in a broadcasting channel frequency band. The receiver has a high frequency... | 05/13/2008 |
