| Patent application number | Description | Published |
|---|
| 20090004977 | Antenna for use in portable applications - In one embodiment, the present invention includes an accessory device for coupling to a portable system having an AM radio receiver. The accessory device includes a housing to house at least one accessory component and an AM antenna. | 01-01-2009 |
| 20090004993 | Rotating harmonic rejection mixer - In one embodiment, the present invention includes a mixer circuit to receive and generate a mixed signal from a radio frequency (RF) signal and a master clock signal, a switch stage coupled to an output of the mixer circuit to rotatingly switch the mixed signal to multiple gain stages coupled to the switch stage, and a combiner to combine an output of the gain stages. | 01-01-2009 |
| 20090004994 | Method and apparatus for controlling a harmonic rejection mixer - In one embodiment, the present invention includes a method for receiving a radio frequency (RF) signal and mixing the RF signal with a master clock to obtain a mixed signal, cyclically rotating the mixed signal to each of N gain stages for at least one cycle of the master clock, and summing the outputs of the N gain stages to provide an output signal. | 01-01-2009 |
| 20090170463 | Correcting for phase noise of an oscillator - In one embodiment, the present invention includes a method for digitizing a phase noise value indicative of a level of phase noise present in a LO signal and downconverting an RF signal to a second frequency signal using the LO signal. This downconversion can cause the phase noise to be transferred to the second frequency signal. The method may thus further include removing the phase noise from the second frequency signal using the digitized phase noise value. | 07-02-2009 |
| 20100130153 | Low-Cost Receiver Using Automatic Gain Control - A receiver ( | 05-27-2010 |
| 20100130155 | Low-Cost Receiver Using Tracking Bandpass Filter and Lowpass Filter - A receiver ( | 05-27-2010 |
| 20100233987 | IMPLEMENTING A ROTATING HARMONIC REJECTION MIXER (RHRM) FOR A TV TUNER IN AN INTEGRATED CIRCUIT - In one embodiment, an apparatus includes mixer stages each coupled to receive a radio frequency (RF) signal from a corresponding tracking filter each configured for a band of frequencies. Each mixer stage is controllable to mix the RF signal with a divided master clock signal to obtain N multi-phase intermediate frequency (IF) signals, where N is programmable based upon a desired channel frequency. A load network having individual loads to be shared by the mixers can be coupled to the mixer stages, and a shared IF combiner may be coupled to the load network to weight and combine outputs of the load network to obtain a quadrature IF signal. The load network can include multiple loads each to be individually controlled to receive one of the multi-phase IF signals. | 09-16-2010 |
| 20100240335 | Rotating Harmonic Rejection Mixer - In one embodiment, the present invention includes a mixer circuit to receive and generate a mixed signal from a radio frequency (RF) signal and a master clock signal, a switch stage coupled to an output of the mixer circuit to rotatingly switch the mixed signal to multiple gain stages coupled to the switch stage, and a combiner to combine an output of the gain stages. | 09-23-2010 |
| 20100328546 | Tracking Filter For A Television Tuner - In one embodiment, a set of tracking filters to be coupled between an amplifier and a mixer is provided. The tracking filters may be differently configured depending on band of operation. For example, a first set of the filters can be configured to maintain a substantially constant Q value across their operating bandwidth while a second set of the filters can be configured to maintain a substantially constant bandwidth across their operating bandwidth. | 12-30-2010 |
| 20110065411 | Method And Apparatus For Controlling A Harmonic Rejection Mixer - In one embodiment, the present invention includes a method for receiving a radio frequency (RF) signal and mixing the RF signal with a master clock to obtain a mixed signal, cyclically rotating the mixed signal to each of N gain stages for at least one cycle of the master clock, and summing the outputs of the N gain stages to provide an output signal. | 03-17-2011 |
| 20110075775 | ANALOG TO DIGITAL CONVERTER WITH LOW OUT OF BAND PEAKING - An analog to digital converter includes a delta sigma modulator with a modified distributed feed-forward (DFF) topology. The modulator includes low pass filter circuitry that provides a first path to a first integrator and a second, feed-forward path to a second integrator that significantly reduce the out of band signal transfer function (STF) peaking of the modulator. | 03-31-2011 |
| 20110076977 | Signal Processor Suitable for Low Intermediate Frequency (LIF) or Zero Intermediate Frequency (ZIF) Operation - A signal processor for a radio frequency (RF) receiver includes a plurality of distributed signal processing elements, in which a first one receives an input signal and a last one provides an output signal, and a plurality of gain elements interspersed between pairs of said plurality of distributed signal processing elements. The signal processor also includes a like plurality of peak detectors coupled to outputs of corresponding ones of said plurality of gain elements, and an automatic gain controller having inputs coupled to outputs of each of the peak detectors, and outputs coupled to each of the plurality of gain elements. The automatic gain controller independently controls each of the plurality of gain elements to form a like plurality of independent automatic gain control (AGC) loops. | 03-31-2011 |
| 20110076979 | SHIELDED DIFFERENTIAL INDUCTOR - A shielded differential inductor forms a high quality factor (high-Q) inductor that is configured to attenuate frequency spurs and/or noise from magnetic coupling generated by electrical structures on or off of a substrate as well as interference received by other components from magnetic coupling generated by the inductor. The shielded differential inductor includes a differential inductor and a shield that substantially isolates the electrical field between the inductor and the substrate to reduce substrate current loss. The shield includes sets of finger structures that extend beyond the width of the inductor and a hub and spoke configuration of ground conductors that connect the sets of finger structures to ground. | 03-31-2011 |
| 20110151816 | Radio Frequency (RF) Receiver with Frequency Planning and Method Therefor - A radio frequency (RF) receiver with frequency planning includes an analog receiver, a digital processor, and a clock synthesizer. The analog receiver has an input for receiving an RF input signal, and an output for providing a digital intermediate frequency (IF) signal. The digital processor has a first input for receiving the digital IF signal, a second input for receiving a clock signal, a signal output for providing an IF output signal, and a control output for providing a clock control signal. The clock synthesizer has an input for receiving the clock control signal, and an output for providing the clock signal, and is controllable to adjust a frequency of the clock signal to a selected one of a predetermined number of frequencies within a predetermined frequency range in response to the clock control signal. | 06-23-2011 |
